java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:11,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:11,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:11,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:11,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:11,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:11,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:11,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:11,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:11,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:11,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:11,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:11,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:11,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:11,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:11,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:11,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:11,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:11,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:11,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:11,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:11,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:11,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:11,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:11,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:11,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:11,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:11,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:11,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:11,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:11,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:11,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:11,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:11,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:12,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:12,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:12,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:12,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:12,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:12,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:12,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:12,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:09:12,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:12,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:12,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:12,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:12,044 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:12,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:12,046 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:12,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:12,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:12,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:12,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:12,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:12,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:12,048 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:12,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:12,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:12,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:12,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:12,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:12,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:12,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:12,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:12,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:12,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:12,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:12,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:12,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:12,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:12,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:09:12,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:12,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:12,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:12,397 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:12,398 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:12,399 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-15 03:09:12,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14adb4191/64a25ad525c74c42a640b0211bddf2a0/FLAGdce30ee03 [2019-10-15 03:09:13,204 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:13,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-15 03:09:13,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14adb4191/64a25ad525c74c42a640b0211bddf2a0/FLAGdce30ee03 [2019-10-15 03:09:13,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14adb4191/64a25ad525c74c42a640b0211bddf2a0 [2019-10-15 03:09:13,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:13,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:13,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:13,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:13,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:13,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13, skipping insertion in model container [2019-10-15 03:09:13,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,350 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:13,439 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:14,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:14,264 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:14,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:14,527 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:14,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14 WrapperNode [2019-10-15 03:09:14,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:14,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:14,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:14,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:14,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... [2019-10-15 03:09:14,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:14,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:14,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:14,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:14,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:14,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:14,962 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:14,964 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:14,965 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:14,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:14,969 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:14,970 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:14,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:14,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:14,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:14,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:14,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:14,979 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:14,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:14,979 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:14,979 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:14,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:14,981 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:14,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:14,981 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:14,982 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:14,983 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:14,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:14,986 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:14,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:14,992 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:14,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:14,995 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:15,001 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:09:15,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:15,003 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:09:15,004 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:15,005 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:15,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:22,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:22,859 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:22,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:22 BoogieIcfgContainer [2019-10-15 03:09:22,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:22,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:22,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:22,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:22,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:13" (1/3) ... [2019-10-15 03:09:22,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d0d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:22, skipping insertion in model container [2019-10-15 03:09:22,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (2/3) ... [2019-10-15 03:09:22,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d0d604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:22, skipping insertion in model container [2019-10-15 03:09:22,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:22" (3/3) ... [2019-10-15 03:09:22,874 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2019-10-15 03:09:22,886 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:22,896 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:22,909 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:22,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:22,946 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:22,946 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:22,946 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:22,946 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:22,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:22,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:22,947 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states. [2019-10-15 03:09:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:23,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:23,034 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:23,038 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1194994142, now seen corresponding path program 1 times [2019-10-15 03:09:23,056 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:23,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803293179] [2019-10-15 03:09:23,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:24,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803293179] [2019-10-15 03:09:24,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549501337] [2019-10-15 03:09:24,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:24,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:24,956 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:25,183 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:25,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:25,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119868375] [2019-10-15 03:09:25,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:25,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:25,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:25,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:25,210 INFO L87 Difference]: Start difference. First operand 618 states. Second operand 3 states. [2019-10-15 03:09:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:25,476 INFO L93 Difference]: Finished difference Result 1376 states and 2085 transitions. [2019-10-15 03:09:25,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:25,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:09:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:25,523 INFO L225 Difference]: With dead ends: 1376 [2019-10-15 03:09:25,524 INFO L226 Difference]: Without dead ends: 890 [2019-10-15 03:09:25,535 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-15 03:09:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 877. [2019-10-15 03:09:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-15 03:09:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1312 transitions. [2019-10-15 03:09:25,700 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1312 transitions. Word has length 118 [2019-10-15 03:09:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:25,701 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1312 transitions. [2019-10-15 03:09:25,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1312 transitions. [2019-10-15 03:09:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:25,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:25,722 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:25,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:25,931 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:25,932 INFO L82 PathProgramCache]: Analyzing trace with hash -710931633, now seen corresponding path program 1 times [2019-10-15 03:09:25,933 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:25,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417456016] [2019-10-15 03:09:25,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:26,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417456016] [2019-10-15 03:09:26,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:26,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:26,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852728629] [2019-10-15 03:09:26,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:26,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:26,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:26,539 INFO L87 Difference]: Start difference. First operand 877 states and 1312 transitions. Second operand 7 states. [2019-10-15 03:09:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:31,321 INFO L93 Difference]: Finished difference Result 3352 states and 5172 transitions. [2019-10-15 03:09:31,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:31,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:09:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:31,361 INFO L225 Difference]: With dead ends: 3352 [2019-10-15 03:09:31,366 INFO L226 Difference]: Without dead ends: 2506 [2019-10-15 03:09:31,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2019-10-15 03:09:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2431. [2019-10-15 03:09:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-15 03:09:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2019-10-15 03:09:31,588 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 119 [2019-10-15 03:09:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:31,589 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2019-10-15 03:09:31,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2019-10-15 03:09:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:31,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:31,595 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:31,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:31,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2044796583, now seen corresponding path program 1 times [2019-10-15 03:09:31,596 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:31,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447088430] [2019-10-15 03:09:31,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:31,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:31,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447088430] [2019-10-15 03:09:31,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562640462] [2019-10-15 03:09:31,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:32,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:32,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:32,590 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:32,860 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:32,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:09:32,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696642652] [2019-10-15 03:09:32,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:32,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:32,862 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand 4 states. [2019-10-15 03:09:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:33,152 INFO L93 Difference]: Finished difference Result 4648 states and 7207 transitions. [2019-10-15 03:09:33,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:33,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:09:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:33,176 INFO L225 Difference]: With dead ends: 4648 [2019-10-15 03:09:33,177 INFO L226 Difference]: Without dead ends: 2248 [2019-10-15 03:09:33,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2019-10-15 03:09:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2198. [2019-10-15 03:09:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2019-10-15 03:09:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3341 transitions. [2019-10-15 03:09:33,329 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3341 transitions. Word has length 120 [2019-10-15 03:09:33,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,330 INFO L462 AbstractCegarLoop]: Abstraction has 2198 states and 3341 transitions. [2019-10-15 03:09:33,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3341 transitions. [2019-10-15 03:09:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:33,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,336 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:33,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:33,537 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,538 INFO L82 PathProgramCache]: Analyzing trace with hash 604184811, now seen corresponding path program 1 times [2019-10-15 03:09:33,539 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47605503] [2019-10-15 03:09:33,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:33,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47605503] [2019-10-15 03:09:33,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652060126] [2019-10-15 03:09:33,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:34,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:34,471 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:34,867 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:34,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:34,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116412547] [2019-10-15 03:09:34,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:34,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:34,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:34,870 INFO L87 Difference]: Start difference. First operand 2198 states and 3341 transitions. Second operand 3 states. [2019-10-15 03:09:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:35,050 INFO L93 Difference]: Finished difference Result 5514 states and 8531 transitions. [2019-10-15 03:09:35,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:35,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:09:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:35,082 INFO L225 Difference]: With dead ends: 5514 [2019-10-15 03:09:35,082 INFO L226 Difference]: Without dead ends: 3347 [2019-10-15 03:09:35,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2019-10-15 03:09:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3262. [2019-10-15 03:09:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2019-10-15 03:09:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4986 transitions. [2019-10-15 03:09:35,281 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4986 transitions. Word has length 119 [2019-10-15 03:09:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:35,282 INFO L462 AbstractCegarLoop]: Abstraction has 3262 states and 4986 transitions. [2019-10-15 03:09:35,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4986 transitions. [2019-10-15 03:09:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:35,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:35,288 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:35,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:35,490 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash 979559282, now seen corresponding path program 1 times [2019-10-15 03:09:35,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:35,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942779716] [2019-10-15 03:09:35,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:35,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942779716] [2019-10-15 03:09:35,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816034000] [2019-10-15 03:09:35,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:36,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:36,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:36,730 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:36,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:37,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:37,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:37,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945971739] [2019-10-15 03:09:37,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:37,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:37,143 INFO L87 Difference]: Start difference. First operand 3262 states and 4986 transitions. Second operand 6 states. [2019-10-15 03:09:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:39,494 INFO L93 Difference]: Finished difference Result 8600 states and 13448 transitions. [2019-10-15 03:09:39,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:39,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:09:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:39,604 INFO L225 Difference]: With dead ends: 8600 [2019-10-15 03:09:39,604 INFO L226 Difference]: Without dead ends: 5369 [2019-10-15 03:09:39,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2019-10-15 03:09:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 5333. [2019-10-15 03:09:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5333 states. [2019-10-15 03:09:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 8047 transitions. [2019-10-15 03:09:39,985 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 8047 transitions. Word has length 120 [2019-10-15 03:09:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:39,986 INFO L462 AbstractCegarLoop]: Abstraction has 5333 states and 8047 transitions. [2019-10-15 03:09:39,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 8047 transitions. [2019-10-15 03:09:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:39,991 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:39,991 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:09:40,200 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:40,201 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:40,202 INFO L82 PathProgramCache]: Analyzing trace with hash 20604644, now seen corresponding path program 1 times [2019-10-15 03:09:40,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:40,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824396925] [2019-10-15 03:09:40,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:40,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:09:40,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824396925] [2019-10-15 03:09:40,625 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:40,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:40,625 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502282997] [2019-10-15 03:09:40,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:40,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:40,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:40,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:40,627 INFO L87 Difference]: Start difference. First operand 5333 states and 8047 transitions. Second operand 10 states. [2019-10-15 03:09:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:46,183 INFO L93 Difference]: Finished difference Result 18854 states and 29437 transitions. [2019-10-15 03:09:46,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:09:46,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:09:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:46,296 INFO L225 Difference]: With dead ends: 18854 [2019-10-15 03:09:46,296 INFO L226 Difference]: Without dead ends: 13552 [2019-10-15 03:09:46,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2019-10-15 03:09:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13397. [2019-10-15 03:09:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13397 states. [2019-10-15 03:09:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 20653 transitions. [2019-10-15 03:09:47,134 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 20653 transitions. Word has length 125 [2019-10-15 03:09:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:47,135 INFO L462 AbstractCegarLoop]: Abstraction has 13397 states and 20653 transitions. [2019-10-15 03:09:47,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 20653 transitions. [2019-10-15 03:09:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:47,141 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:47,141 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:47,142 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:47,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1489652305, now seen corresponding path program 1 times [2019-10-15 03:09:47,142 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:47,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275590126] [2019-10-15 03:09:47,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:47,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275590126] [2019-10-15 03:09:47,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101265114] [2019-10-15 03:09:47,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:48,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:09:48,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:09:48,476 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:09:48,911 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:48,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-15 03:09:48,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274337548] [2019-10-15 03:09:48,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:48,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:48,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:09:48,913 INFO L87 Difference]: Start difference. First operand 13397 states and 20653 transitions. Second operand 7 states.