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_spec13_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:15,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:15,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:15,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:15,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:15,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:15,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:15,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:15,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:15,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:15,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:15,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:15,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:15,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:15,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:15,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:15,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:15,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:15,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:15,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:15,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:15,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:15,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:15,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:15,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:15,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:15,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:15,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:15,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:15,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:15,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:15,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:15,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:15,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:15,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:15,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:15,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:15,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:15,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:15,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:15,321 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 23:02:15,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:15,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:15,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:15,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:15,348 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:15,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:15,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:15,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:15,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:15,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:15,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:15,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:15,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:15,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:15,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:15,350 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:15,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:15,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:15,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:15,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:15,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:15,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:15,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:15,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:15,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:15,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:15,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:15,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:15,353 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 23:02:15,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:15,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:15,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:15,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:15,622 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:15,623 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-13 23:02:15,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e02b9c7/aa38b11677ba493f9e2d18ac90ac2775/FLAGfa7049455 [2019-10-13 23:02:16,311 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:16,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-13 23:02:16,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e02b9c7/aa38b11677ba493f9e2d18ac90ac2775/FLAGfa7049455 [2019-10-13 23:02:16,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e02b9c7/aa38b11677ba493f9e2d18ac90ac2775 [2019-10-13 23:02:16,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:16,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:16,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:16,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:16,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:16,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:16" (1/1) ... [2019-10-13 23:02:16,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1172d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:16, skipping insertion in model container [2019-10-13 23:02:16,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:16" (1/1) ... [2019-10-13 23:02:16,547 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:16,631 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:17,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:17,315 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:17,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:17,541 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:17,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17 WrapperNode [2019-10-13 23:02:17,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:17,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:17,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:17,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:17,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (1/1) ... [2019-10-13 23:02:17,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:17,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:17,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:17,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:17,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (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 23:02:17,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:17,842 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:17,843 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:17,844 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:17,845 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:17,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-13 23:02:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:02:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-13 23:02:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-13 23:02:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-13 23:02:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-13 23:02:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-13 23:02:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-13 23:02:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-13 23:02:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:17,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:22,501 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:22,501 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:22,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:22 BoogieIcfgContainer [2019-10-13 23:02:22,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:22,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:22,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:22,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:22,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:16" (1/3) ... [2019-10-13 23:02:22,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d7254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:22, skipping insertion in model container [2019-10-13 23:02:22,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:17" (2/3) ... [2019-10-13 23:02:22,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d7254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:22, skipping insertion in model container [2019-10-13 23:02:22,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:22" (3/3) ... [2019-10-13 23:02:22,514 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_productSimulator.cil.c [2019-10-13 23:02:22,524 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:22,533 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:22,544 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:22,591 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:22,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:22,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:22,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:22,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:22,592 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:22,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:22,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states. [2019-10-13 23:02:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:02:22,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:22,679 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:22,682 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:22,688 INFO L82 PathProgramCache]: Analyzing trace with hash 718339452, now seen corresponding path program 1 times [2019-10-13 23:02:22,701 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:22,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347753458] [2019-10-13 23:02:22,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:22,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:22,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:02:23,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347753458] [2019-10-13 23:02:23,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:23,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:02:23,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118235869] [2019-10-13 23:02:23,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:02:23,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:23,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:02:23,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:23,480 INFO L87 Difference]: Start difference. First operand 726 states. Second operand 6 states. [2019-10-13 23:02:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:23,685 INFO L93 Difference]: Finished difference Result 1190 states and 1756 transitions. [2019-10-13 23:02:23,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:23,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2019-10-13 23:02:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:23,710 INFO L225 Difference]: With dead ends: 1190 [2019-10-13 23:02:23,710 INFO L226 Difference]: Without dead ends: 598 [2019-10-13 23:02:23,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-13 23:02:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-13 23:02:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-13 23:02:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 866 transitions. [2019-10-13 23:02:23,846 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 866 transitions. Word has length 121 [2019-10-13 23:02:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:23,848 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 866 transitions. [2019-10-13 23:02:23,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:02:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 866 transitions. [2019-10-13 23:02:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:02:23,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:23,861 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:23,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1365224182, now seen corresponding path program 1 times [2019-10-13 23:02:23,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:23,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422858477] [2019-10-13 23:02:23,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:23,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:23,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:02:24,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422858477] [2019-10-13 23:02:24,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:24,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:02:24,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010648638] [2019-10-13 23:02:24,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:24,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:24,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:24,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:02:24,100 INFO L87 Difference]: Start difference. First operand 598 states and 866 transitions. Second operand 4 states. [2019-10-13 23:02:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:24,953 INFO L93 Difference]: Finished difference Result 1166 states and 1713 transitions. [2019-10-13 23:02:24,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:02:24,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 23:02:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:24,961 INFO L225 Difference]: With dead ends: 1166 [2019-10-13 23:02:24,961 INFO L226 Difference]: Without dead ends: 596 [2019-10-13 23:02:24,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:02:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-13 23:02:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2019-10-13 23:02:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-10-13 23:02:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 858 transitions. [2019-10-13 23:02:25,006 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 858 transitions. Word has length 122 [2019-10-13 23:02:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:25,007 INFO L462 AbstractCegarLoop]: Abstraction has 596 states and 858 transitions. [2019-10-13 23:02:25,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 858 transitions. [2019-10-13 23:02:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 23:02:25,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:25,010 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:25,011 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:25,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:25,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1199005239, now seen corresponding path program 1 times [2019-10-13 23:02:25,011 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:25,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528641893] [2019-10-13 23:02:25,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:02:25,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528641893] [2019-10-13 23:02:25,291 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:25,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:02:25,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665656534] [2019-10-13 23:02:25,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:02:25,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:25,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:02:25,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:25,294 INFO L87 Difference]: Start difference. First operand 596 states and 858 transitions. Second operand 3 states. [2019-10-13 23:02:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:25,391 INFO L93 Difference]: Finished difference Result 1681 states and 2461 transitions. [2019-10-13 23:02:25,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:02:25,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-13 23:02:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:25,407 INFO L225 Difference]: With dead ends: 1681 [2019-10-13 23:02:25,407 INFO L226 Difference]: Without dead ends: 1141 [2019-10-13 23:02:25,410 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 23:02:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-10-13 23:02:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1137. [2019-10-13 23:02:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2019-10-13 23:02:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1656 transitions. [2019-10-13 23:02:25,519 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1656 transitions. Word has length 123 [2019-10-13 23:02:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:25,521 INFO L462 AbstractCegarLoop]: Abstraction has 1137 states and 1656 transitions. [2019-10-13 23:02:25,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:02:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1656 transitions. [2019-10-13 23:02:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:02:25,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:25,527 INFO L380 BasicCegarLoop]: trace histogram [5, 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] [2019-10-13 23:02:25,528 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash 186326343, now seen corresponding path program 1 times [2019-10-13 23:02:25,529 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:25,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519431097] [2019-10-13 23:02:25,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:25,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 23:02:25,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519431097] [2019-10-13 23:02:25,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736982250] [2019-10-13 23:02:25,754 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 23:02:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:26,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 23:02:26,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 23:02:26,658 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:26,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:02:26,887 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:26,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [4] total 11 [2019-10-13 23:02:26,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276938613] [2019-10-13 23:02:26,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:26,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:26,890 INFO L87 Difference]: Start difference. First operand 1137 states and 1656 transitions. Second operand 9 states. [2019-10-13 23:02:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:34,717 INFO L93 Difference]: Finished difference Result 5712 states and 8722 transitions. [2019-10-13 23:02:34,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:34,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-13 23:02:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:34,762 INFO L225 Difference]: With dead ends: 5712 [2019-10-13 23:02:34,762 INFO L226 Difference]: Without dead ends: 4660 [2019-10-13 23:02:34,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:02:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2019-10-13 23:02:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4553. [2019-10-13 23:02:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2019-10-13 23:02:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 7004 transitions. [2019-10-13 23:02:35,065 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 7004 transitions. Word has length 124 [2019-10-13 23:02:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:35,065 INFO L462 AbstractCegarLoop]: Abstraction has 4553 states and 7004 transitions. [2019-10-13 23:02:35,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 7004 transitions. [2019-10-13 23:02:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:02:35,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:35,074 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:35,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:35,283 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:35,283 INFO L82 PathProgramCache]: Analyzing trace with hash 381916500, now seen corresponding path program 1 times [2019-10-13 23:02:35,283 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:35,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932548837] [2019-10-13 23:02:35,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 23:02:35,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932548837] [2019-10-13 23:02:35,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:35,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:35,635 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736923529] [2019-10-13 23:02:35,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:35,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:35,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:35,636 INFO L87 Difference]: Start difference. First operand 4553 states and 7004 transitions. Second operand 7 states. [2019-10-13 23:02:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:40,320 INFO L93 Difference]: Finished difference Result 13815 states and 21540 transitions. [2019-10-13 23:02:40,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:40,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2019-10-13 23:02:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:40,394 INFO L225 Difference]: With dead ends: 13815 [2019-10-13 23:02:40,394 INFO L226 Difference]: Without dead ends: 9348 [2019-10-13 23:02:40,486 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2019-10-13 23:02:40,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9071. [2019-10-13 23:02:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9071 states. [2019-10-13 23:02:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9071 states to 9071 states and 14050 transitions. [2019-10-13 23:02:41,006 INFO L78 Accepts]: Start accepts. Automaton has 9071 states and 14050 transitions. Word has length 173 [2019-10-13 23:02:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,008 INFO L462 AbstractCegarLoop]: Abstraction has 9071 states and 14050 transitions. [2019-10-13 23:02:41,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9071 states and 14050 transitions. [2019-10-13 23:02:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:02:41,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,020 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 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 23:02:41,020 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1647600245, now seen corresponding path program 1 times [2019-10-13 23:02:41,021 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147153957] [2019-10-13 23:02:41,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 23:02:41,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147153957] [2019-10-13 23:02:41,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657128538] [2019-10-13 23:02:41,276 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 23:02:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:41,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:02:41,997 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 23:02:42,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:42,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-13 23:02:42,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730894814] [2019-10-13 23:02:42,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:42,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:42,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:42,236 INFO L87 Difference]: Start difference. First operand 9071 states and 14050 transitions. Second operand 4 states. [2019-10-13 23:02:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:42,567 INFO L93 Difference]: Finished difference Result 18154 states and 28454 transitions. [2019-10-13 23:02:42,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:42,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-13 23:02:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:42,632 INFO L225 Difference]: With dead ends: 18154 [2019-10-13 23:02:42,632 INFO L226 Difference]: Without dead ends: 9167 [2019-10-13 23:02:42,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2019-10-13 23:02:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 9167. [2019-10-13 23:02:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9167 states. [2019-10-13 23:02:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9167 states to 9167 states and 14146 transitions. [2019-10-13 23:02:43,247 INFO L78 Accepts]: Start accepts. Automaton has 9167 states and 14146 transitions. Word has length 177 [2019-10-13 23:02:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:43,248 INFO L462 AbstractCegarLoop]: Abstraction has 9167 states and 14146 transitions. [2019-10-13 23:02:43,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9167 states and 14146 transitions. [2019-10-13 23:02:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 23:02:43,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:43,258 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 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 23:02:43,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:43,466 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1232486354, now seen corresponding path program 1 times [2019-10-13 23:02:43,467 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:43,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475411355] [2019-10-13 23:02:43,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-10-13 23:02:43,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475411355] [2019-10-13 23:02:43,873 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:43,873 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:02:43,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402753514] [2019-10-13 23:02:43,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:02:43,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:43,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:02:43,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:43,875 INFO L87 Difference]: Start difference. First operand 9167 states and 14146 transitions. Second operand 3 states. [2019-10-13 23:02:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:44,168 INFO L93 Difference]: Finished difference Result 11436 states and 17616 transitions. [2019-10-13 23:02:44,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:02:44,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-13 23:02:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:44,210 INFO L225 Difference]: With dead ends: 11436 [2019-10-13 23:02:44,210 INFO L226 Difference]: Without dead ends: 6959 [2019-10-13 23:02:44,238 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 23:02:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6959 states. [2019-10-13 23:02:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6959 to 6955. [2019-10-13 23:02:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6955 states. [2019-10-13 23:02:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 10646 transitions. [2019-10-13 23:02:44,721 INFO L78 Accepts]: Start accepts. Automaton has 6955 states and 10646 transitions. Word has length 180 [2019-10-13 23:02:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:44,722 INFO L462 AbstractCegarLoop]: Abstraction has 6955 states and 10646 transitions. [2019-10-13 23:02:44,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:02:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states and 10646 transitions. [2019-10-13 23:02:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:02:44,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:44,747 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 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 23:02:44,747 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash -19205950, now seen corresponding path program 1 times [2019-10-13 23:02:44,748 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:44,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559516189] [2019-10-13 23:02:44,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 23:02:45,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559516189] [2019-10-13 23:02:45,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107714901] [2019-10-13 23:02:45,021 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 23:02:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:45,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 23:02:45,887 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 23:02:46,078 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:46,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-13 23:02:46,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937524316] [2019-10-13 23:02:46,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:46,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:46,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:46,081 INFO L87 Difference]: Start difference. First operand 6955 states and 10646 transitions. Second operand 5 states. [2019-10-13 23:02:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:46,345 INFO L93 Difference]: Finished difference Result 13862 states and 21417 transitions. [2019-10-13 23:02:46,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:46,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-13 23:02:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:46,383 INFO L225 Difference]: With dead ends: 13862 [2019-10-13 23:02:46,383 INFO L226 Difference]: Without dead ends: 6943 [2019-10-13 23:02:46,403 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2019-10-13 23:02:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6943. [2019-10-13 23:02:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2019-10-13 23:02:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 10598 transitions. [2019-10-13 23:02:46,743 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 10598 transitions. Word has length 179 [2019-10-13 23:02:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:46,744 INFO L462 AbstractCegarLoop]: Abstraction has 6943 states and 10598 transitions. [2019-10-13 23:02:46,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 10598 transitions. [2019-10-13 23:02:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 23:02:46,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:46,754 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1]