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_spec14_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:22,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:22,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:22,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:22,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:22,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:22,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:22,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:22,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:22,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:22,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:22,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:22,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:22,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:22,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:22,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:22,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:22,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:22,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:22,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:22,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:22,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:22,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:22,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:22,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:22,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:22,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:22,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:22,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:22,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:22,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:22,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:22,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:22,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:22,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:22,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:22,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:22,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:22,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:22,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:22,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:22,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:06:22,553 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:22,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:22,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:22,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:22,556 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:22,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:22,557 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:22,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:22,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:22,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:22,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:22,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:22,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:22,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:22,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:22,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:22,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:22,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:22,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:22,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:22,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:22,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:22,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:22,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:22,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:22,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:22,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:22,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:22,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:06:22,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:22,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:22,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:22,877 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:22,877 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:22,878 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product19.cil.c [2019-10-15 03:06:22,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8f592a/2e4c9b8e4b304a50807a66bd2b9e2cfc/FLAGd48b4bdbd [2019-10-15 03:06:23,759 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:23,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product19.cil.c [2019-10-15 03:06:23,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8f592a/2e4c9b8e4b304a50807a66bd2b9e2cfc/FLAGd48b4bdbd [2019-10-15 03:06:23,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8f592a/2e4c9b8e4b304a50807a66bd2b9e2cfc [2019-10-15 03:06:23,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:23,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:23,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:23,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:23,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:23,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:23" (1/1) ... [2019-10-15 03:06:24,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3729bd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:24, skipping insertion in model container [2019-10-15 03:06:24,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:23" (1/1) ... [2019-10-15 03:06:24,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:24,112 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:24,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:25,015 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:25,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:25,247 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:25,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25 WrapperNode [2019-10-15 03:06:25,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:25,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:25,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:25,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:25,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... [2019-10-15 03:06:25,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:25,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:25,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:25,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:25,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:25,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:25,607 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:32,511 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:32,511 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:32,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:32 BoogieIcfgContainer [2019-10-15 03:06:32,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:32,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:32,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:32,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:32,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:23" (1/3) ... [2019-10-15 03:06:32,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2d7ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:32, skipping insertion in model container [2019-10-15 03:06:32,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:25" (2/3) ... [2019-10-15 03:06:32,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2d7ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:32, skipping insertion in model container [2019-10-15 03:06:32,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:32" (3/3) ... [2019-10-15 03:06:32,523 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product19.cil.c [2019-10-15 03:06:32,593 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:32,604 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:32,617 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:32,653 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:32,653 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:32,653 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:32,653 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:32,653 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:32,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:32,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:32,654 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-15 03:06:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:06:32,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:32,710 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:32,713 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2030703232, now seen corresponding path program 1 times [2019-10-15 03:06:32,727 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:32,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147160491] [2019-10-15 03:06:32,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:32,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:32,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:33,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147160491] [2019-10-15 03:06:33,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:33,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:33,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666525114] [2019-10-15 03:06:33,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:33,668 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:33,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:33,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:33,687 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 7 states. [2019-10-15 03:06:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:36,010 INFO L93 Difference]: Finished difference Result 955 states and 1412 transitions. [2019-10-15 03:06:36,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:36,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:06:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:36,040 INFO L225 Difference]: With dead ends: 955 [2019-10-15 03:06:36,040 INFO L226 Difference]: Without dead ends: 537 [2019-10-15 03:06:36,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-15 03:06:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 531. [2019-10-15 03:06:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-15 03:06:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 763 transitions. [2019-10-15 03:06:36,201 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 763 transitions. Word has length 110 [2019-10-15 03:06:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:36,202 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 763 transitions. [2019-10-15 03:06:36,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 763 transitions. [2019-10-15 03:06:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:06:36,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:36,217 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:36,217 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1123858737, now seen corresponding path program 1 times [2019-10-15 03:06:36,218 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:36,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304350453] [2019-10-15 03:06:36,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:36,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:36,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 03:06:36,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304350453] [2019-10-15 03:06:36,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:36,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:36,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709116155] [2019-10-15 03:06:36,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:36,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:36,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:36,554 INFO L87 Difference]: Start difference. First operand 531 states and 763 transitions. Second operand 5 states. [2019-10-15 03:06:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:36,646 INFO L93 Difference]: Finished difference Result 1037 states and 1505 transitions. [2019-10-15 03:06:36,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:36,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 03:06:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:36,659 INFO L225 Difference]: With dead ends: 1037 [2019-10-15 03:06:36,659 INFO L226 Difference]: Without dead ends: 537 [2019-10-15 03:06:36,664 INFO L600 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 [2019-10-15 03:06:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-15 03:06:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-10-15 03:06:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-15 03:06:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 769 transitions. [2019-10-15 03:06:36,761 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 769 transitions. Word has length 150 [2019-10-15 03:06:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:36,762 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 769 transitions. [2019-10-15 03:06:36,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 769 transitions. [2019-10-15 03:06:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-15 03:06:36,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:36,771 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:36,771 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:36,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1104860009, now seen corresponding path program 1 times [2019-10-15 03:06:36,772 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:36,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622629479] [2019-10-15 03:06:36,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:36,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:36,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-15 03:06:37,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622629479] [2019-10-15 03:06:37,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915751598] [2019-10-15 03:06:37,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:37,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:37,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-15 03:06:38,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-15 03:06:38,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:38,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:38,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457276744] [2019-10-15 03:06:38,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:38,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:38,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:38,610 INFO L87 Difference]: Start difference. First operand 537 states and 769 transitions. Second operand 4 states. [2019-10-15 03:06:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:38,970 INFO L93 Difference]: Finished difference Result 1082 states and 1589 transitions. [2019-10-15 03:06:38,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:38,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2019-10-15 03:06:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:38,976 INFO L225 Difference]: With dead ends: 1082 [2019-10-15 03:06:38,977 INFO L226 Difference]: Without dead ends: 576 [2019-10-15 03:06:38,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 431 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-10-15 03:06:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-10-15 03:06:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-10-15 03:06:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 842 transitions. [2019-10-15 03:06:39,019 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 842 transitions. Word has length 216 [2019-10-15 03:06:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:39,020 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 842 transitions. [2019-10-15 03:06:39,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 842 transitions. [2019-10-15 03:06:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:39,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:39,027 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:39,242 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:39,243 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:39,244 INFO L82 PathProgramCache]: Analyzing trace with hash -699123755, now seen corresponding path program 1 times [2019-10-15 03:06:39,244 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:39,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138783054] [2019-10-15 03:06:39,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:39,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:39,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:39,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138783054] [2019-10-15 03:06:39,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202261914] [2019-10-15 03:06:39,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:40,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:06:40,182 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:40,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:40,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:40,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953279132] [2019-10-15 03:06:40,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:40,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:40,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:40,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:40,601 INFO L87 Difference]: Start difference. First operand 576 states and 842 transitions. Second operand 4 states. [2019-10-15 03:06:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,043 INFO L93 Difference]: Finished difference Result 1160 states and 1734 transitions. [2019-10-15 03:06:41,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:41,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-15 03:06:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:41,054 INFO L225 Difference]: With dead ends: 1160 [2019-10-15 03:06:41,054 INFO L226 Difference]: Without dead ends: 615 [2019-10-15 03:06:41,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-15 03:06:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-15 03:06:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-15 03:06:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 915 transitions. [2019-10-15 03:06:41,106 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 915 transitions. Word has length 160 [2019-10-15 03:06:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,107 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 915 transitions. [2019-10-15 03:06:41,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 915 transitions. [2019-10-15 03:06:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-15 03:06:41,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,115 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:41,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:41,329 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash -628378331, now seen corresponding path program 1 times [2019-10-15 03:06:41,330 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:41,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173193846] [2019-10-15 03:06:41,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:41,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-10-15 03:06:41,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173193846] [2019-10-15 03:06:41,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67470879] [2019-10-15 03:06:41,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:42,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 3686 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:42,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2019-10-15 03:06:42,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2019-10-15 03:06:43,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:43,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-15 03:06:43,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583478407] [2019-10-15 03:06:43,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:43,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:43,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:43,401 INFO L87 Difference]: Start difference. First operand 615 states and 915 transitions. Second operand 4 states. [2019-10-15 03:06:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:43,668 INFO L93 Difference]: Finished difference Result 1238 states and 1879 transitions. [2019-10-15 03:06:43,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:43,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2019-10-15 03:06:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:43,674 INFO L225 Difference]: With dead ends: 1238 [2019-10-15 03:06:43,674 INFO L226 Difference]: Without dead ends: 654 [2019-10-15 03:06:43,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-15 03:06:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-15 03:06:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-15 03:06:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 988 transitions. [2019-10-15 03:06:43,706 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 988 transitions. Word has length 286 [2019-10-15 03:06:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:43,708 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 988 transitions. [2019-10-15 03:06:43,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 988 transitions. [2019-10-15 03:06:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-10-15 03:06:43,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:43,715 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:43,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:43,933 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:43,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1424055278, now seen corresponding path program 1 times [2019-10-15 03:06:43,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:43,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796287085] [2019-10-15 03:06:43,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:43,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:43,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2019-10-15 03:06:44,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796287085] [2019-10-15 03:06:44,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017182596] [2019-10-15 03:06:44,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:45,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2019-10-15 03:06:45,359 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2019-10-15 03:06:46,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:46,118 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-15 03:06:46,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650490948] [2019-10-15 03:06:46,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:46,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:46,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:46,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:46,120 INFO L87 Difference]: Start difference. First operand 654 states and 988 transitions. Second operand 4 states. [2019-10-15 03:06:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:46,455 INFO L93 Difference]: Finished difference Result 1316 states and 2024 transitions. [2019-10-15 03:06:46,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:46,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2019-10-15 03:06:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:46,465 INFO L225 Difference]: With dead ends: 1316 [2019-10-15 03:06:46,465 INFO L226 Difference]: Without dead ends: 693 [2019-10-15 03:06:46,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 581 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2019-10-15 03:06:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2019-10-15 03:06:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-10-15 03:06:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1061 transitions. [2019-10-15 03:06:46,502 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1061 transitions. Word has length 289 [2019-10-15 03:06:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:46,507 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 1061 transitions. [2019-10-15 03:06:46,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1061 transitions. [2019-10-15 03:06:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 03:06:46,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:46,515 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:46,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:46,720 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:46,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash 924630329, now seen corresponding path program 1 times [2019-10-15 03:06:46,720 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:46,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223725835] [2019-10-15 03:06:46,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-15 03:06:47,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223725835] [2019-10-15 03:06:47,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844614052] [2019-10-15 03:06:47,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:47,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:47,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-15 03:06:48,021 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-15 03:06:48,449 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:48,449 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [12] total 15 [2019-10-15 03:06:48,449 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570151320] [2019-10-15 03:06:48,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:48,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:48,451 INFO L87 Difference]: Start difference. First operand 693 states and 1061 transitions. Second operand 5 states. [2019-10-15 03:06:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:48,765 INFO L93 Difference]: Finished difference Result 1394 states and 2169 transitions. [2019-10-15 03:06:48,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:48,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2019-10-15 03:06:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:48,770 INFO L225 Difference]: With dead ends: 1394 [2019-10-15 03:06:48,770 INFO L226 Difference]: Without dead ends: 732 [2019-10-15 03:06:48,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:06:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-15 03:06:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2019-10-15 03:06:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2019-10-15 03:06:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1134 transitions. [2019-10-15 03:06:48,820 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1134 transitions. Word has length 230 [2019-10-15 03:06:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:48,820 INFO L462 AbstractCegarLoop]: Abstraction has 732 states and 1134 transitions. [2019-10-15 03:06:48,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1134 transitions. [2019-10-15 03:06:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 03:06:48,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:48,827 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:49,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:49,045 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2069371432, now seen corresponding path program 1 times [2019-10-15 03:06:49,046 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:49,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732048457] [2019-10-15 03:06:49,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:49,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-10-15 03:06:49,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732048457] [2019-10-15 03:06:49,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799685010] [2019-10-15 03:06:49,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:50,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 3306 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 03:06:50,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-10-15 03:06:50,536 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-10-15 03:06:51,085 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:51,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [12] total 19 [2019-10-15 03:06:51,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773470547] [2019-10-15 03:06:51,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:06:51,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:06:51,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:06:51,096 INFO L87 Difference]: Start difference. First operand 732 states and 1134 transitions. Second operand 9 states. [2019-10-15 03:06:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:56,113 INFO L93 Difference]: Finished difference Result 2065 states and 3261 transitions. [2019-10-15 03:06:56,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:56,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2019-10-15 03:06:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:56,124 INFO L225 Difference]: With dead ends: 2065 [2019-10-15 03:06:56,124 INFO L226 Difference]: Without dead ends: 1364 [2019-10-15 03:06:56,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2019-10-15 03:06:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2019-10-15 03:06:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1325. [2019-10-15 03:06:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2019-10-15 03:06:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2100 transitions. [2019-10-15 03:06:56,189 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2100 transitions. Word has length 230 [2019-10-15 03:06:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:56,191 INFO L462 AbstractCegarLoop]: Abstraction has 1325 states and 2100 transitions. [2019-10-15 03:06:56,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:06:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2100 transitions. [2019-10-15 03:06:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 03:06:56,199 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:56,199 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:56,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:56,409 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash 923283601, now seen corresponding path program 1 times [2019-10-15 03:06:56,409 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:56,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742878659] [2019-10-15 03:06:56,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:06:56,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742878659] [2019-10-15 03:06:56,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:56,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:56,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174527634] [2019-10-15 03:06:56,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:56,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:56,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:56,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:56,721 INFO L87 Difference]: Start difference. First operand 1325 states and 2100 transitions. Second operand 7 states. [2019-10-15 03:06:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:58,205 INFO L93 Difference]: Finished difference Result 2820 states and 4503 transitions. [2019-10-15 03:06:58,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:58,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2019-10-15 03:06:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:58,219 INFO L225 Difference]: With dead ends: 2820 [2019-10-15 03:06:58,219 INFO L226 Difference]: Without dead ends: 1279 [2019-10-15 03:06:58,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:58,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-10-15 03:06:58,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1262. [2019-10-15 03:06:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2019-10-15 03:06:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1881 transitions. [2019-10-15 03:06:58,330 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1881 transitions. Word has length 169 [2019-10-15 03:06:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:58,331 INFO L462 AbstractCegarLoop]: Abstraction has 1262 states and 1881 transitions. [2019-10-15 03:06:58,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1881 transitions. [2019-10-15 03:06:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:06:58,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:58,340 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:58,341 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash -587514443, now seen corresponding path program 1 times [2019-10-15 03:06:58,342 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:58,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355197874] [2019-10-15 03:06:58,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,343 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:58,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:07:00,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355197874] [2019-10-15 03:07:00,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274075904] [2019-10-15 03:07:00,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true