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_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:50,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:50,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:50,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:50,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:50,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:50,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:50,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:50,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:50,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:50,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:50,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:50,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:50,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:50,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:50,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:50,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:50,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:50,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:50,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:50,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:50,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:50,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:50,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:50,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:50,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:50,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:50,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:50,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:50,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:50,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:50,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:50,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:50,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:50,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:50,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:50,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:50,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:50,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:50,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:50,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:50,397 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 [2019-10-13 23:04:50,412 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:50,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:50,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:50,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:50,413 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:50,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:50,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:50,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:50,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:50,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:50,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:50,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:50,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:50,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:50,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:50,416 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:50,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:50,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:50,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:50,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:50,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:50,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:50,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:50,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:50,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:50,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:50,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:50,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:50,418 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 [2019-10-13 23:04:50,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:50,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:50,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:50,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:50,722 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:50,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-13 23:04:50,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcde3178f/424e6e382a0149b9901229f34ba3cda6/FLAGd3ad8c912 [2019-10-13 23:04:51,424 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:51,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-13 23:04:51,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcde3178f/424e6e382a0149b9901229f34ba3cda6/FLAGd3ad8c912 [2019-10-13 23:04:51,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcde3178f/424e6e382a0149b9901229f34ba3cda6 [2019-10-13 23:04:51,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:51,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:51,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:51,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:51,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:51,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345a22c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51, skipping insertion in model container [2019-10-13 23:04:51,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,691 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:51,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:52,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:52,552 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:52,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:52,813 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:52,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52 WrapperNode [2019-10-13 23:04:52,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:52,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:52,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:52,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:52,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:52,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:52,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:52,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:52,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:52,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:53,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (1/1) ... [2019-10-13 23:04:53,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:53,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:53,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:53,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:53,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (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 [2019-10-13 23:04:53,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:53,118 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:53,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:04:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:53,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:53,139 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:53,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:58,935 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:58,935 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:58,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:58 BoogieIcfgContainer [2019-10-13 23:04:58,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:58,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:58,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:58,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:58,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:51" (1/3) ... [2019-10-13 23:04:58,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3712269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:58, skipping insertion in model container [2019-10-13 23:04:58,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:52" (2/3) ... [2019-10-13 23:04:58,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3712269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:58, skipping insertion in model container [2019-10-13 23:04:58,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:58" (3/3) ... [2019-10-13 23:04:58,946 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2019-10-13 23:04:58,957 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:58,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:58,980 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:59,026 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:59,026 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:59,027 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:59,027 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:59,027 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:59,027 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:59,027 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:59,027 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2019-10-13 23:04:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:59,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,073 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:59,076 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1707992655, now seen corresponding path program 1 times [2019-10-13 23:04:59,091 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172576019] [2019-10-13 23:04:59,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:59,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172576019] [2019-10-13 23:04:59,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:04:59,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453758965] [2019-10-13 23:04:59,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:04:59,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:04:59,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:59,960 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 8 states. [2019-10-13 23:05:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:04,296 INFO L93 Difference]: Finished difference Result 1838 states and 2790 transitions. [2019-10-13 23:05:04,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:04,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-13 23:05:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:04,331 INFO L225 Difference]: With dead ends: 1838 [2019-10-13 23:05:04,331 INFO L226 Difference]: Without dead ends: 1331 [2019-10-13 23:05:04,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2019-10-13 23:05:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1321. [2019-10-13 23:05:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2019-10-13 23:05:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1955 transitions. [2019-10-13 23:05:04,537 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1955 transitions. Word has length 80 [2019-10-13 23:05:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:04,539 INFO L462 AbstractCegarLoop]: Abstraction has 1321 states and 1955 transitions. [2019-10-13 23:05:04,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:05:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1955 transitions. [2019-10-13 23:05:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:05:04,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:04,558 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:04,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:04,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash -867389666, now seen corresponding path program 1 times [2019-10-13 23:05:04,561 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:04,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542283528] [2019-10-13 23:05:04,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:04,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542283528] [2019-10-13 23:05:04,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:04,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:04,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875981495] [2019-10-13 23:05:04,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:04,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:04,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:04,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:04,993 INFO L87 Difference]: Start difference. First operand 1321 states and 1955 transitions. Second operand 10 states. [2019-10-13 23:05:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,158 INFO L93 Difference]: Finished difference Result 1349 states and 1989 transitions. [2019-10-13 23:05:06,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:06,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-13 23:05:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,171 INFO L225 Difference]: With dead ends: 1349 [2019-10-13 23:05:06,172 INFO L226 Difference]: Without dead ends: 1346 [2019-10-13 23:05:06,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2019-10-13 23:05:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1323. [2019-10-13 23:05:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2019-10-13 23:05:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1955 transitions. [2019-10-13 23:05:06,258 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1955 transitions. Word has length 81 [2019-10-13 23:05:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:06,259 INFO L462 AbstractCegarLoop]: Abstraction has 1323 states and 1955 transitions. [2019-10-13 23:05:06,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1955 transitions. [2019-10-13 23:05:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:05:06,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:06,262 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:06,262 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:06,263 INFO L82 PathProgramCache]: Analyzing trace with hash -118771068, now seen corresponding path program 1 times [2019-10-13 23:05:06,263 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:06,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828001869] [2019-10-13 23:05:06,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:06,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828001869] [2019-10-13 23:05:06,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:06,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:06,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555532656] [2019-10-13 23:05:06,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:06,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:06,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:06,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:06,430 INFO L87 Difference]: Start difference. First operand 1323 states and 1955 transitions. Second operand 3 states. [2019-10-13 23:05:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,652 INFO L93 Difference]: Finished difference Result 3790 states and 5715 transitions. [2019-10-13 23:05:06,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:06,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-13 23:05:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,674 INFO L225 Difference]: With dead ends: 3790 [2019-10-13 23:05:06,674 INFO L226 Difference]: Without dead ends: 2498 [2019-10-13 23:05:06,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2019-10-13 23:05:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2430. [2019-10-13 23:05:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2430 states. [2019-10-13 23:05:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3617 transitions. [2019-10-13 23:05:06,812 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3617 transitions. Word has length 82 [2019-10-13 23:05:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:06,813 INFO L462 AbstractCegarLoop]: Abstraction has 2430 states and 3617 transitions. [2019-10-13 23:05:06,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3617 transitions. [2019-10-13 23:05:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:05:06,815 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:06,815 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:06,815 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1972688209, now seen corresponding path program 1 times [2019-10-13 23:05:06,816 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:06,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110578802] [2019-10-13 23:05:06,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:07,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110578802] [2019-10-13 23:05:07,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556418721] [2019-10-13 23:05:07,123 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 [2019-10-13 23:05:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:07,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:07,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:07,952 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:07,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:07,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918143271] [2019-10-13 23:05:07,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:07,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:07,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:07,956 INFO L87 Difference]: Start difference. First operand 2430 states and 3617 transitions. Second operand 3 states. [2019-10-13 23:05:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:08,189 INFO L93 Difference]: Finished difference Result 5316 states and 7993 transitions. [2019-10-13 23:05:08,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:08,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:05:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:08,220 INFO L225 Difference]: With dead ends: 5316 [2019-10-13 23:05:08,221 INFO L226 Difference]: Without dead ends: 2917 [2019-10-13 23:05:08,238 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2019-10-13 23:05:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2861. [2019-10-13 23:05:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2019-10-13 23:05:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4271 transitions. [2019-10-13 23:05:08,433 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4271 transitions. Word has length 81 [2019-10-13 23:05:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:08,434 INFO L462 AbstractCegarLoop]: Abstraction has 2861 states and 4271 transitions. [2019-10-13 23:05:08,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4271 transitions. [2019-10-13 23:05:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 23:05:08,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:08,441 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:08,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:08,649 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash -864942524, now seen corresponding path program 1 times [2019-10-13 23:05:08,650 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,650 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583156909] [2019-10-13 23:05:08,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-13 23:05:09,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583156909] [2019-10-13 23:05:09,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876501414] [2019-10-13 23:05:09,311 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 [2019-10-13 23:05:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 3853 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:10,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:05:10,206 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 43 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-13 23:05:10,610 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:10,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 4] total 15 [2019-10-13 23:05:10,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809367601] [2019-10-13 23:05:10,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:10,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:10,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:10,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:05:10,612 INFO L87 Difference]: Start difference. First operand 2861 states and 4271 transitions. Second operand 3 states. [2019-10-13 23:05:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:10,804 INFO L93 Difference]: Finished difference Result 6189 states and 9361 transitions. [2019-10-13 23:05:10,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:10,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 23:05:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:10,834 INFO L225 Difference]: With dead ends: 6189 [2019-10-13 23:05:10,834 INFO L226 Difference]: Without dead ends: 3359 [2019-10-13 23:05:10,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:05:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2019-10-13 23:05:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3252. [2019-10-13 23:05:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3252 states. [2019-10-13 23:05:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 4862 transitions. [2019-10-13 23:05:11,046 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 4862 transitions. Word has length 201 [2019-10-13 23:05:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:11,047 INFO L462 AbstractCegarLoop]: Abstraction has 3252 states and 4862 transitions. [2019-10-13 23:05:11,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 4862 transitions. [2019-10-13 23:05:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 23:05:11,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:11,055 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:11,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:11,275 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1052012858, now seen corresponding path program 1 times [2019-10-13 23:05:11,276 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:11,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728696561] [2019-10-13 23:05:11,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:11,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:11,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:05:11,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728696561] [2019-10-13 23:05:11,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905121736] [2019-10-13 23:05:11,547 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 [2019-10-13 23:05:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:12,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 3875 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 23:05:12,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 23:05:12,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:13,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:05:13,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:13,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-13 23:05:13,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19963409] [2019-10-13 23:05:13,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:05:13,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:05:13,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:05:13,304 INFO L87 Difference]: Start difference. First operand 3252 states and 4862 transitions. Second operand 9 states. [2019-10-13 23:05:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:22,673 INFO L93 Difference]: Finished difference Result 8524 states and 12854 transitions. [2019-10-13 23:05:22,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:05:22,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-13 23:05:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:22,720 INFO L225 Difference]: With dead ends: 8524 [2019-10-13 23:05:22,720 INFO L226 Difference]: Without dead ends: 5303 [2019-10-13 23:05:22,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 394 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:05:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2019-10-13 23:05:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5181. [2019-10-13 23:05:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5181 states. [2019-10-13 23:05:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 7823 transitions. [2019-10-13 23:05:23,095 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 7823 transitions. Word has length 203 [2019-10-13 23:05:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:23,096 INFO L462 AbstractCegarLoop]: Abstraction has 5181 states and 7823 transitions. [2019-10-13 23:05:23,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:05:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 7823 transitions. [2019-10-13 23:05:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:05:23,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:23,102 INFO L380 BasicCegarLoop]: trace histogram [3, 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]