/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:06:57,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:06:57,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:06:57,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:06:57,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:06:57,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:06:57,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:06:57,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:06:57,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:06:57,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:06:57,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:06:57,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:06:57,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:06:57,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:06:57,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:06:57,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:06:57,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:06:57,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:06:57,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:06:57,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:06:57,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:06:57,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:06:57,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:06:57,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:06:57,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:06:57,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:06:57,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:06:57,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:06:57,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:06:57,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:06:57,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:06:57,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:06:57,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:06:57,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:06:57,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:06:57,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:06:57,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:06:57,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:06:57,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:06:57,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:06:57,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:06:57,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:06:57,993 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:06:57,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:06:57,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:06:57,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:06:57,995 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:06:57,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:06:57,996 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:06:57,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:06:57,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:06:57,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:06:57,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:06:57,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:06:57,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:06:57,997 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:06:57,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:06:57,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:06:57,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:06:57,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:06:57,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:06:57,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:06:57,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:06:57,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:06:57,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:06:57,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:06:57,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:06:57,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:06:58,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:06:58,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:06:58,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:06:58,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:06:58,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:06:58,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:06:58,311 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:06:58,311 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:06:58,312 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2019-11-07 04:06:58,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc89acd7/dbc949457e7a4dd696804d9ced479a29/FLAGf36e64de6 [2019-11-07 04:06:59,055 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:06:59,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2019-11-07 04:06:59,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc89acd7/dbc949457e7a4dd696804d9ced479a29/FLAGf36e64de6 [2019-11-07 04:06:59,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fc89acd7/dbc949457e7a4dd696804d9ced479a29 [2019-11-07 04:06:59,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:06:59,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:06:59,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:06:59,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:06:59,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:06:59,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:06:59" (1/1) ... [2019-11-07 04:06:59,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5178d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:06:59, skipping insertion in model container [2019-11-07 04:06:59,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:06:59" (1/1) ... [2019-11-07 04:06:59,301 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:06:59,426 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:07:00,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:00,128 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:07:00,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:00,318 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:07:00,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00 WrapperNode [2019-11-07 04:07:00,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:07:00,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:07:00,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:07:00,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:07:00,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... [2019-11-07 04:07:00,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:07:00,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:07:00,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:07:00,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:07:00,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:07:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:07:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:07:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:00,604 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:07:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:07:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:07:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:07:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:07:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:07:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:07:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:07:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:07:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:07:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:07:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:07:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:07:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:07:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:07:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:07:00,614 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:07:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:07:00,616 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:07:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:07:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:07:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:07:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:07:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:07:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:07:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:07:00,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:07:00,619 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:07:00,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:07:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:07:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:07:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:07:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:07:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:07:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:07:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:07:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:07:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-11-07 04:07:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-11-07 04:07:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:07:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:07:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:07:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:07:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:07:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:07:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:07:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:07:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:07:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:07:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:07:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:07:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:07:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:07:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:07:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:07:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:07:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:07:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:07:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:07:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:07:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:07:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:07:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:07:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:07:00,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:07:00,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:07:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:07:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:07:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:07:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:07:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:07:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:07:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:07:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:07:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:07:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:07:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:07:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:07:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:07:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:07:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:07:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:07:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:07:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:07:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:07:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:07:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:07:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:07:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:07:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:07:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:07:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:07:00,646 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:07:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:07:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:07:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:07:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:07:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:07:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:07:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:07:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:07:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:07:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:07:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:07:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:07:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:07:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:07:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:07:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:07:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:07:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-11-07 04:07:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:07:00,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:07:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:07:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:07:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:07:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:07:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:07:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:07:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:07:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:07:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:07:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:07:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:07:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:07:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:07:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:07:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:07:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:07:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:07:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:07:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:07:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:07:00,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:07:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:07:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:07:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:07:00,677 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:07:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:07:00,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:07:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:07:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:07:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:07:00,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:07:05,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:07:05,917 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:07:05,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:05 BoogieIcfgContainer [2019-11-07 04:07:05,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:07:05,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:07:05,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:07:05,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:07:05,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:06:59" (1/3) ... [2019-11-07 04:07:05,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a52d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:05, skipping insertion in model container [2019-11-07 04:07:05,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:00" (2/3) ... [2019-11-07 04:07:05,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a52d4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:05, skipping insertion in model container [2019-11-07 04:07:05,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:05" (3/3) ... [2019-11-07 04:07:05,927 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2019-11-07 04:07:05,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:07:05,948 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:07:05,959 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:07:06,007 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:07:06,007 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:07:06,007 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:07:06,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:07:06,008 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:07:06,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:07:06,008 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:07:06,008 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:07:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-11-07 04:07:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:07:06,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:06,079 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:06,081 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash 882516267, now seen corresponding path program 1 times [2019-11-07 04:07:06,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:06,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944666470] [2019-11-07 04:07:06,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:07:06,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944666470] [2019-11-07 04:07:06,852 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563925831] [2019-11-07 04:07:06,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:07,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 04:07:07,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:07:07,640 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:07:07,774 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:07,774 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-11-07 04:07:07,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637261974] [2019-11-07 04:07:07,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:07:07,782 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:07:07,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:07:07,799 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-11-07 04:07:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:07,914 INFO L93 Difference]: Finished difference Result 938 states and 1428 transitions. [2019-11-07 04:07:07,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:07:07,917 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 127 [2019-11-07 04:07:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:07,963 INFO L225 Difference]: With dead ends: 938 [2019-11-07 04:07:07,963 INFO L226 Difference]: Without dead ends: 477 [2019-11-07 04:07:07,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:07:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2019-11-07 04:07:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2019-11-07 04:07:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2019-11-07 04:07:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 710 transitions. [2019-11-07 04:07:08,081 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 710 transitions. Word has length 127 [2019-11-07 04:07:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:08,083 INFO L462 AbstractCegarLoop]: Abstraction has 477 states and 710 transitions. [2019-11-07 04:07:08,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:07:08,084 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 710 transitions. [2019-11-07 04:07:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:07:08,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:08,093 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:08,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:08,302 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:08,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1605727189, now seen corresponding path program 1 times [2019-11-07 04:07:08,303 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:08,304 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947691146] [2019-11-07 04:07:08,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:08,591 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947691146] [2019-11-07 04:07:08,591 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:08,591 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:08,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034401653] [2019-11-07 04:07:08,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:08,593 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:08,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:08,594 INFO L87 Difference]: Start difference. First operand 477 states and 710 transitions. Second operand 7 states. [2019-11-07 04:07:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:08,757 INFO L93 Difference]: Finished difference Result 927 states and 1402 transitions. [2019-11-07 04:07:08,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:08,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-11-07 04:07:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:08,763 INFO L225 Difference]: With dead ends: 927 [2019-11-07 04:07:08,764 INFO L226 Difference]: Without dead ends: 487 [2019-11-07 04:07:08,767 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-11-07 04:07:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 484. [2019-11-07 04:07:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-11-07 04:07:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 720 transitions. [2019-11-07 04:07:08,825 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 720 transitions. Word has length 127 [2019-11-07 04:07:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:08,826 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 720 transitions. [2019-11-07 04:07:08,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 720 transitions. [2019-11-07 04:07:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:07:08,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:08,832 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:08,832 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:08,833 INFO L82 PathProgramCache]: Analyzing trace with hash 795441007, now seen corresponding path program 1 times [2019-11-07 04:07:08,833 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:08,833 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738915597] [2019-11-07 04:07:08,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:09,130 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738915597] [2019-11-07 04:07:09,130 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:09,131 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:09,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704268196] [2019-11-07 04:07:09,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:09,133 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:09,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:09,134 INFO L87 Difference]: Start difference. First operand 484 states and 720 transitions. Second operand 7 states. [2019-11-07 04:07:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:09,231 INFO L93 Difference]: Finished difference Result 939 states and 1418 transitions. [2019-11-07 04:07:09,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:09,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2019-11-07 04:07:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:09,246 INFO L225 Difference]: With dead ends: 939 [2019-11-07 04:07:09,246 INFO L226 Difference]: Without dead ends: 492 [2019-11-07 04:07:09,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-11-07 04:07:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 485. [2019-11-07 04:07:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-07 04:07:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 721 transitions. [2019-11-07 04:07:09,296 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 721 transitions. Word has length 128 [2019-11-07 04:07:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:09,297 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 721 transitions. [2019-11-07 04:07:09,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 721 transitions. [2019-11-07 04:07:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:07:09,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:09,301 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:09,302 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1706005297, now seen corresponding path program 1 times [2019-11-07 04:07:09,302 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:09,302 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572136019] [2019-11-07 04:07:09,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:09,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572136019] [2019-11-07 04:07:09,510 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:09,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:09,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842615759] [2019-11-07 04:07:09,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:09,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:09,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:09,513 INFO L87 Difference]: Start difference. First operand 485 states and 721 transitions. Second operand 7 states. [2019-11-07 04:07:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:09,591 INFO L93 Difference]: Finished difference Result 941 states and 1420 transitions. [2019-11-07 04:07:09,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:07:09,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2019-11-07 04:07:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:09,596 INFO L225 Difference]: With dead ends: 941 [2019-11-07 04:07:09,596 INFO L226 Difference]: Without dead ends: 493 [2019-11-07 04:07:09,599 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-11-07 04:07:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 486. [2019-11-07 04:07:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-11-07 04:07:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 722 transitions. [2019-11-07 04:07:09,620 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 722 transitions. Word has length 128 [2019-11-07 04:07:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:09,621 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 722 transitions. [2019-11-07 04:07:09,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 722 transitions. [2019-11-07 04:07:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:07:09,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:09,626 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:09,626 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1523899197, now seen corresponding path program 1 times [2019-11-07 04:07:09,627 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:09,627 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92931679] [2019-11-07 04:07:09,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:09,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92931679] [2019-11-07 04:07:09,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:09,807 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:07:09,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408075848] [2019-11-07 04:07:09,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:09,808 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:09,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:09,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:07:09,809 INFO L87 Difference]: Start difference. First operand 486 states and 722 transitions. Second operand 4 states. [2019-11-07 04:07:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:11,290 INFO L93 Difference]: Finished difference Result 1743 states and 2642 transitions. [2019-11-07 04:07:11,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:07:11,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-11-07 04:07:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:11,300 INFO L225 Difference]: With dead ends: 1743 [2019-11-07 04:07:11,300 INFO L226 Difference]: Without dead ends: 1294 [2019-11-07 04:07:11,304 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:07:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2019-11-07 04:07:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1284. [2019-11-07 04:07:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2019-11-07 04:07:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1921 transitions. [2019-11-07 04:07:11,383 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1921 transitions. Word has length 131 [2019-11-07 04:07:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:11,385 INFO L462 AbstractCegarLoop]: Abstraction has 1284 states and 1921 transitions. [2019-11-07 04:07:11,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1921 transitions. [2019-11-07 04:07:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 04:07:11,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:11,393 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:11,393 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -71400793, now seen corresponding path program 1 times [2019-11-07 04:07:11,394 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:11,394 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598693884] [2019-11-07 04:07:11,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:11,602 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598693884] [2019-11-07 04:07:11,602 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:11,603 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:07:11,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322053957] [2019-11-07 04:07:11,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:07:11,604 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:07:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:07:11,605 INFO L87 Difference]: Start difference. First operand 1284 states and 1921 transitions. Second operand 9 states. [2019-11-07 04:07:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:12,041 INFO L93 Difference]: Finished difference Result 2346 states and 3582 transitions. [2019-11-07 04:07:12,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:07:12,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 138 [2019-11-07 04:07:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:12,063 INFO L225 Difference]: With dead ends: 2346 [2019-11-07 04:07:12,063 INFO L226 Difference]: Without dead ends: 1400 [2019-11-07 04:07:12,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:07:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-11-07 04:07:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2019-11-07 04:07:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-11-07 04:07:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2096 transitions. [2019-11-07 04:07:12,145 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2096 transitions. Word has length 138 [2019-11-07 04:07:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:12,146 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 2096 transitions. [2019-11-07 04:07:12,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:07:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2096 transitions. [2019-11-07 04:07:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-07 04:07:12,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:12,151 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:12,151 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:12,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:12,152 INFO L82 PathProgramCache]: Analyzing trace with hash 830960031, now seen corresponding path program 1 times [2019-11-07 04:07:12,152 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:12,152 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711737603] [2019-11-07 04:07:12,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:12,404 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711737603] [2019-11-07 04:07:12,404 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:12,405 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:07:12,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058932004] [2019-11-07 04:07:12,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:12,406 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:07:12,407 INFO L87 Difference]: Start difference. First operand 1400 states and 2096 transitions. Second operand 4 states. [2019-11-07 04:07:13,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:13,803 INFO L93 Difference]: Finished difference Result 5370 states and 8388 transitions. [2019-11-07 04:07:13,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:07:13,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-11-07 04:07:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:13,837 INFO L225 Difference]: With dead ends: 5370 [2019-11-07 04:07:13,837 INFO L226 Difference]: Without dead ends: 4007 [2019-11-07 04:07:13,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:07:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2019-11-07 04:07:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 3942. [2019-11-07 04:07:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2019-11-07 04:07:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 6063 transitions. [2019-11-07 04:07:14,071 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 6063 transitions. Word has length 139 [2019-11-07 04:07:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:14,072 INFO L462 AbstractCegarLoop]: Abstraction has 3942 states and 6063 transitions. [2019-11-07 04:07:14,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 6063 transitions. [2019-11-07 04:07:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 04:07:14,076 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:14,076 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:14,077 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:14,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1523142433, now seen corresponding path program 1 times [2019-11-07 04:07:14,077 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:14,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674503141] [2019-11-07 04:07:14,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:14,363 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674503141] [2019-11-07 04:07:14,363 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:14,363 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:07:14,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145309825] [2019-11-07 04:07:14,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:07:14,365 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:14,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:07:14,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:07:14,366 INFO L87 Difference]: Start difference. First operand 3942 states and 6063 transitions. Second operand 9 states. [2019-11-07 04:07:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:15,665 INFO L93 Difference]: Finished difference Result 8306 states and 12901 transitions. [2019-11-07 04:07:15,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:07:15,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-11-07 04:07:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:15,728 INFO L225 Difference]: With dead ends: 8306 [2019-11-07 04:07:15,728 INFO L226 Difference]: Without dead ends: 5287 [2019-11-07 04:07:15,767 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:07:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2019-11-07 04:07:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 5214. [2019-11-07 04:07:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5214 states. [2019-11-07 04:07:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 8038 transitions. [2019-11-07 04:07:16,165 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 8038 transitions. Word has length 141 [2019-11-07 04:07:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:16,166 INFO L462 AbstractCegarLoop]: Abstraction has 5214 states and 8038 transitions. [2019-11-07 04:07:16,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:07:16,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 8038 transitions. [2019-11-07 04:07:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 04:07:16,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:16,171 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:16,171 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1901410123, now seen corresponding path program 1 times [2019-11-07 04:07:16,173 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:16,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577252096] [2019-11-07 04:07:16,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:07:16,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577252096] [2019-11-07 04:07:16,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177227156] [2019-11-07 04:07:16,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:16,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 04:07:16,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:07:16,954 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:07:17,152 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:17,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-11-07 04:07:17,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102069579] [2019-11-07 04:07:17,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:17,154 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:17,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:17,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:07:17,154 INFO L87 Difference]: Start difference. First operand 5214 states and 8038 transitions. Second operand 4 states. [2019-11-07 04:07:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:17,579 INFO L93 Difference]: Finished difference Result 10445 states and 16304 transitions. [2019-11-07 04:07:17,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:17,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-11-07 04:07:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:17,641 INFO L225 Difference]: With dead ends: 10445 [2019-11-07 04:07:17,642 INFO L226 Difference]: Without dead ends: 5268 [2019-11-07 04:07:17,686 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:07:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2019-11-07 04:07:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5268. [2019-11-07 04:07:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5268 states. [2019-11-07 04:07:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 8092 transitions. [2019-11-07 04:07:17,982 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 8092 transitions. Word has length 145 [2019-11-07 04:07:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:17,983 INFO L462 AbstractCegarLoop]: Abstraction has 5268 states and 8092 transitions. [2019-11-07 04:07:17,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 8092 transitions. [2019-11-07 04:07:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-07 04:07:17,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:17,989 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:18,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:18,197 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 526734466, now seen corresponding path program 1 times [2019-11-07 04:07:18,197 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:18,198 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270624361] [2019-11-07 04:07:18,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:18,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270624361] [2019-11-07 04:07:18,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164729665] [2019-11-07 04:07:18,380 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 [2019-11-07 04:07:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:18,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 04:07:18,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-07 04:07:18,996 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:07:19,173 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:07:19,173 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-11-07 04:07:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36084611] [2019-11-07 04:07:19,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:07:19,175 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:07:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:19,176 INFO L87 Difference]: Start difference. First operand 5268 states and 8092 transitions. Second operand 5 states. [2019-11-07 04:07:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:19,544 INFO L93 Difference]: Finished difference Result 10526 states and 16326 transitions. [2019-11-07 04:07:19,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:19,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-11-07 04:07:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:19,594 INFO L225 Difference]: With dead ends: 10526 [2019-11-07 04:07:19,594 INFO L226 Difference]: Without dead ends: 5259 [2019-11-07 04:07:19,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:07:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2019-11-07 04:07:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5259. [2019-11-07 04:07:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5259 states. [2019-11-07 04:07:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 8056 transitions. [2019-11-07 04:07:19,913 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 8056 transitions. Word has length 147 [2019-11-07 04:07:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:19,914 INFO L462 AbstractCegarLoop]: Abstraction has 5259 states and 8056 transitions. [2019-11-07 04:07:19,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:07:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 8056 transitions. [2019-11-07 04:07:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-07 04:07:19,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:19,919 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:20,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:20,136 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:20,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1646341328, now seen corresponding path program 1 times [2019-11-07 04:07:20,137 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:20,137 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462378532] [2019-11-07 04:07:20,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:07:20,368 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462378532] [2019-11-07 04:07:20,369 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615058868] [2019-11-07 04:07:20,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:20,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:07:20,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:07:21,018 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:07:21,230 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:21,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-11-07 04:07:21,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609914239] [2019-11-07 04:07:21,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:07:21,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:21,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:07:21,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:07:21,233 INFO L87 Difference]: Start difference. First operand 5259 states and 8056 transitions. Second operand 5 states. [2019-11-07 04:07:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:22,617 INFO L93 Difference]: Finished difference Result 13510 states and 21562 transitions. [2019-11-07 04:07:22,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:07:22,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-11-07 04:07:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:22,692 INFO L225 Difference]: With dead ends: 13510 [2019-11-07 04:07:22,692 INFO L226 Difference]: Without dead ends: 8288 [2019-11-07 04:07:22,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:07:22,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8288 states. [2019-11-07 04:07:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8288 to 8233. [2019-11-07 04:07:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8233 states. [2019-11-07 04:07:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8233 states to 8233 states and 12637 transitions. [2019-11-07 04:07:23,158 INFO L78 Accepts]: Start accepts. Automaton has 8233 states and 12637 transitions. Word has length 147 [2019-11-07 04:07:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:23,159 INFO L462 AbstractCegarLoop]: Abstraction has 8233 states and 12637 transitions. [2019-11-07 04:07:23,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:07:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8233 states and 12637 transitions. [2019-11-07 04:07:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 04:07:23,165 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:23,166 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:23,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:23,374 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash -708222869, now seen corresponding path program 1 times [2019-11-07 04:07:23,375 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:23,376 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870127718] [2019-11-07 04:07:23,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:07:23,549 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870127718] [2019-11-07 04:07:23,549 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268507063] [2019-11-07 04:07:23,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:25,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 04:07:25,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:07:25,124 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:07:25,292 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:07:25,292 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-11-07 04:07:25,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532631404] [2019-11-07 04:07:25,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:07:25,297 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:25,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:07:25,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:25,298 INFO L87 Difference]: Start difference. First operand 8233 states and 12637 transitions. Second operand 5 states. [2019-11-07 04:07:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:25,593 INFO L93 Difference]: Finished difference Result 16545 states and 25799 transitions. [2019-11-07 04:07:25,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:25,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-11-07 04:07:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:25,651 INFO L225 Difference]: With dead ends: 16545 [2019-11-07 04:07:25,651 INFO L226 Difference]: Without dead ends: 8349 [2019-11-07 04:07:25,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2019-11-07 04:07:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 8294. [2019-11-07 04:07:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8294 states. [2019-11-07 04:07:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8294 states to 8294 states and 12715 transitions. [2019-11-07 04:07:26,050 INFO L78 Accepts]: Start accepts. Automaton has 8294 states and 12715 transitions. Word has length 148 [2019-11-07 04:07:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:26,051 INFO L462 AbstractCegarLoop]: Abstraction has 8294 states and 12715 transitions. [2019-11-07 04:07:26,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:07:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 8294 states and 12715 transitions. [2019-11-07 04:07:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:07:26,058 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:26,058 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 04:07:26,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:26,266 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash -30321984, now seen corresponding path program 1 times [2019-11-07 04:07:26,267 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:26,268 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128091915] [2019-11-07 04:07:26,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:26,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128091915] [2019-11-07 04:07:26,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694663080] [2019-11-07 04:07:26,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:27,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-07 04:07:27,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:07:27,474 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:07:27,795 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:27,795 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 18 [2019-11-07 04:07:27,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407135538] [2019-11-07 04:07:27,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:27,797 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:27,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:27,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-11-07 04:07:27,798 INFO L87 Difference]: Start difference. First operand 8294 states and 12715 transitions. Second operand 7 states.