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_spec9_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:52,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:52,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:52,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:52,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:52,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:52,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:52,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:52,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:52,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:52,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:52,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:52,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:52,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:52,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:52,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:52,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:52,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:52,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:52,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:52,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:52,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:52,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:52,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:52,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:52,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:52,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:52,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:52,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:52,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:52,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:52,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:52,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:52,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:52,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:52,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:52,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:52,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:52,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:52,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:52,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:52,278 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 03:09:52,311 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:52,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:52,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:52,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:52,316 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:52,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:52,317 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:52,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:52,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:52,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:52,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:52,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:52,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:52,318 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:52,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:52,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:52,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:52,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:52,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:52,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:52,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:52,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:52,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:52,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:52,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:52,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:52,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:52,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:52,321 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 03:09:52,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:52,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:52,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:52,631 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:52,631 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:52,632 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2019-10-15 03:09:52,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567ef9158/e407a551490749f998409d4ebfa6bd12/FLAGd27642ef8 [2019-10-15 03:09:53,360 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:53,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product11.cil.c [2019-10-15 03:09:53,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567ef9158/e407a551490749f998409d4ebfa6bd12/FLAGd27642ef8 [2019-10-15 03:09:53,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567ef9158/e407a551490749f998409d4ebfa6bd12 [2019-10-15 03:09:53,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:53,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:53,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:53,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:53,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:53,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:53,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:53, skipping insertion in model container [2019-10-15 03:09:53,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:53" (1/1) ... [2019-10-15 03:09:53,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:53,599 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:54,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:54,404 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:54,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:54,629 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:54,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54 WrapperNode [2019-10-15 03:09:54,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:54,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:54,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:54,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:54,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (1/1) ... [2019-10-15 03:09:54,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:54,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:54,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:54,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:54,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (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 03:09:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:54,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:54,976 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:54,977 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:54,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:54,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:54,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:54,979 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:54,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:54,980 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:54,980 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:54,981 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:54,982 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:54,983 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:09:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:54,990 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:54,991 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:54,992 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:09:54,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:09:54,999 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:54,999 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:55,000 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:55,001 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:55,006 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:55,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:00,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:00,197 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:00,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:00 BoogieIcfgContainer [2019-10-15 03:10:00,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:00,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:00,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:00,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:00,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:53" (1/3) ... [2019-10-15 03:10:00,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a8414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:00, skipping insertion in model container [2019-10-15 03:10:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:54" (2/3) ... [2019-10-15 03:10:00,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632a8414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:00, skipping insertion in model container [2019-10-15 03:10:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:00" (3/3) ... [2019-10-15 03:10:00,207 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product11.cil.c [2019-10-15 03:10:00,217 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:00,227 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:00,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:00,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:00,271 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:00,271 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:00,271 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:00,271 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:00,271 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:00,272 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:00,272 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-10-15 03:10:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:10:00,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:00,345 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:00,347 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:00,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1545748670, now seen corresponding path program 1 times [2019-10-15 03:10:00,362 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:00,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008892613] [2019-10-15 03:10:00,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:00,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:00,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:01,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008892613] [2019-10-15 03:10:01,081 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:01,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:10:01,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771238342] [2019-10-15 03:10:01,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:10:01,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:01,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:10:01,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:01,109 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 2 states. [2019-10-15 03:10:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:01,225 INFO L93 Difference]: Finished difference Result 458 states and 681 transitions. [2019-10-15 03:10:01,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:10:01,227 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:10:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:01,260 INFO L225 Difference]: With dead ends: 458 [2019-10-15 03:10:01,261 INFO L226 Difference]: Without dead ends: 424 [2019-10-15 03:10:01,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:10:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-15 03:10:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2019-10-15 03:10:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-10-15 03:10:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 630 transitions. [2019-10-15 03:10:01,386 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 630 transitions. Word has length 112 [2019-10-15 03:10:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:01,388 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 630 transitions. [2019-10-15 03:10:01,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:10:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 630 transitions. [2019-10-15 03:10:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:10:01,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:01,396 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:01,396 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash -179594714, now seen corresponding path program 1 times [2019-10-15 03:10:01,397 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:01,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294960909] [2019-10-15 03:10:01,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:01,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:01,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:01,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294960909] [2019-10-15 03:10:01,722 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:01,722 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:10:01,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657403061] [2019-10-15 03:10:01,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:10:01,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:01,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:10:01,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:01,726 INFO L87 Difference]: Start difference. First operand 424 states and 630 transitions. Second operand 7 states. [2019-10-15 03:10:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:06,489 INFO L93 Difference]: Finished difference Result 1199 states and 1827 transitions. [2019-10-15 03:10:06,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:10:06,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:10:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:06,500 INFO L225 Difference]: With dead ends: 1199 [2019-10-15 03:10:06,500 INFO L226 Difference]: Without dead ends: 817 [2019-10-15 03:10:06,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:10:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2019-10-15 03:10:06,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 792. [2019-10-15 03:10:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-10-15 03:10:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1203 transitions. [2019-10-15 03:10:06,621 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1203 transitions. Word has length 113 [2019-10-15 03:10:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:06,623 INFO L462 AbstractCegarLoop]: Abstraction has 792 states and 1203 transitions. [2019-10-15 03:10:06,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:10:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1203 transitions. [2019-10-15 03:10:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:10:06,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:06,635 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:06,636 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:06,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1071775104, now seen corresponding path program 1 times [2019-10-15 03:10:06,638 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:06,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110452222] [2019-10-15 03:10:06,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:06,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:06,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110452222] [2019-10-15 03:10:06,912 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:06,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:06,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703356952] [2019-10-15 03:10:06,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:06,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:06,914 INFO L87 Difference]: Start difference. First operand 792 states and 1203 transitions. Second operand 3 states. [2019-10-15 03:10:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:07,031 INFO L93 Difference]: Finished difference Result 2260 states and 3501 transitions. [2019-10-15 03:10:07,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:07,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-10-15 03:10:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:07,046 INFO L225 Difference]: With dead ends: 2260 [2019-10-15 03:10:07,046 INFO L226 Difference]: Without dead ends: 1510 [2019-10-15 03:10:07,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2019-10-15 03:10:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1478. [2019-10-15 03:10:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2019-10-15 03:10:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2285 transitions. [2019-10-15 03:10:07,197 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2285 transitions. Word has length 117 [2019-10-15 03:10:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:07,200 INFO L462 AbstractCegarLoop]: Abstraction has 1478 states and 2285 transitions. [2019-10-15 03:10:07,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2285 transitions. [2019-10-15 03:10:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:10:07,205 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:07,205 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:07,205 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:07,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:07,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1136002442, now seen corresponding path program 1 times [2019-10-15 03:10:07,207 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:07,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661004192] [2019-10-15 03:10:07,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:07,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661004192] [2019-10-15 03:10:07,425 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:07,425 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:07,425 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205446532] [2019-10-15 03:10:07,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:07,426 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:07,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:07,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:07,426 INFO L87 Difference]: Start difference. First operand 1478 states and 2285 transitions. Second operand 3 states. [2019-10-15 03:10:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:07,602 INFO L93 Difference]: Finished difference Result 4319 states and 6784 transitions. [2019-10-15 03:10:07,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:07,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:10:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:07,636 INFO L225 Difference]: With dead ends: 4319 [2019-10-15 03:10:07,636 INFO L226 Difference]: Without dead ends: 2884 [2019-10-15 03:10:07,645 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2019-10-15 03:10:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2851. [2019-10-15 03:10:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2019-10-15 03:10:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4471 transitions. [2019-10-15 03:10:07,881 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4471 transitions. Word has length 118 [2019-10-15 03:10:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:07,882 INFO L462 AbstractCegarLoop]: Abstraction has 2851 states and 4471 transitions. [2019-10-15 03:10:07,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:07,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4471 transitions. [2019-10-15 03:10:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:10:07,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:07,886 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:07,886 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -857625726, now seen corresponding path program 1 times [2019-10-15 03:10:07,887 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:07,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525381045] [2019-10-15 03:10:07,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:07,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:08,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525381045] [2019-10-15 03:10:08,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:08,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:08,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181075499] [2019-10-15 03:10:08,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:08,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:08,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:08,063 INFO L87 Difference]: Start difference. First operand 2851 states and 4471 transitions. Second operand 3 states. [2019-10-15 03:10:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:08,351 INFO L93 Difference]: Finished difference Result 8438 states and 13461 transitions. [2019-10-15 03:10:08,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:08,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:10:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:08,393 INFO L225 Difference]: With dead ends: 8438 [2019-10-15 03:10:08,394 INFO L226 Difference]: Without dead ends: 5632 [2019-10-15 03:10:08,408 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2019-10-15 03:10:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5598. [2019-10-15 03:10:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5598 states. [2019-10-15 03:10:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 8919 transitions. [2019-10-15 03:10:08,843 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 8919 transitions. Word has length 119 [2019-10-15 03:10:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:08,845 INFO L462 AbstractCegarLoop]: Abstraction has 5598 states and 8919 transitions. [2019-10-15 03:10:08,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 8919 transitions. [2019-10-15 03:10:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:10:08,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:08,857 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:08,857 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:08,858 INFO L82 PathProgramCache]: Analyzing trace with hash -817878216, now seen corresponding path program 1 times [2019-10-15 03:10:08,866 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:08,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093030755] [2019-10-15 03:10:08,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:08,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:08,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:09,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093030755] [2019-10-15 03:10:09,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:09,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:09,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10543083] [2019-10-15 03:10:09,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:09,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:09,231 INFO L87 Difference]: Start difference. First operand 5598 states and 8919 transitions. Second operand 3 states. [2019-10-15 03:10:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:09,682 INFO L93 Difference]: Finished difference Result 16677 states and 27208 transitions. [2019-10-15 03:10:09,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:09,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-10-15 03:10:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:09,782 INFO L225 Difference]: With dead ends: 16677 [2019-10-15 03:10:09,782 INFO L226 Difference]: Without dead ends: 11128 [2019-10-15 03:10:09,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2019-10-15 03:10:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 11093. [2019-10-15 03:10:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11093 states. [2019-10-15 03:10:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11093 states to 11093 states and 18091 transitions. [2019-10-15 03:10:10,727 INFO L78 Accepts]: Start accepts. Automaton has 11093 states and 18091 transitions. Word has length 120 [2019-10-15 03:10:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:10,728 INFO L462 AbstractCegarLoop]: Abstraction has 11093 states and 18091 transitions. [2019-10-15 03:10:10,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states and 18091 transitions. [2019-10-15 03:10:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:10:10,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:10,732 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:10,732 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash 414298500, now seen corresponding path program 1 times [2019-10-15 03:10:10,733 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:10,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230532921] [2019-10-15 03:10:10,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:10,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:10:10,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230532921] [2019-10-15 03:10:10,890 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:10,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:10,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677317204] [2019-10-15 03:10:10,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:10,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:10,892 INFO L87 Difference]: Start difference. First operand 11093 states and 18091 transitions. Second operand 3 states. [2019-10-15 03:10:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:11,260 INFO L93 Difference]: Finished difference Result 11816 states and 19352 transitions. [2019-10-15 03:10:11,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:11,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-15 03:10:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:11,338 INFO L225 Difference]: With dead ends: 11816 [2019-10-15 03:10:11,338 INFO L226 Difference]: Without dead ends: 11803 [2019-10-15 03:10:11,348 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11803 states. [2019-10-15 03:10:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11803 to 11773. [2019-10-15 03:10:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11773 states. [2019-10-15 03:10:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 19290 transitions. [2019-10-15 03:10:12,111 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 19290 transitions. Word has length 121 [2019-10-15 03:10:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:12,112 INFO L462 AbstractCegarLoop]: Abstraction has 11773 states and 19290 transitions. [2019-10-15 03:10:12,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 19290 transitions. [2019-10-15 03:10:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 03:10:12,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:12,119 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:12,119 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1018230350, now seen corresponding path program 1 times [2019-10-15 03:10:12,120 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:12,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799564361] [2019-10-15 03:10:12,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:12,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:12,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 03:10:12,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799564361] [2019-10-15 03:10:12,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:12,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:10:12,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341903550] [2019-10-15 03:10:12,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:10:12,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:12,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:10:12,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:10:12,325 INFO L87 Difference]: Start difference. First operand 11773 states and 19290 transitions. Second operand 5 states. [2019-10-15 03:10:13,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:13,515 INFO L93 Difference]: Finished difference Result 23690 states and 39514 transitions. [2019-10-15 03:10:13,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:13,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-15 03:10:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:13,624 INFO L225 Difference]: With dead ends: 23690 [2019-10-15 03:10:13,624 INFO L226 Difference]: Without dead ends: 11960 [2019-10-15 03:10:13,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:10:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11960 states. [2019-10-15 03:10:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11960 to 11957. [2019-10-15 03:10:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11957 states. [2019-10-15 03:10:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 19636 transitions. [2019-10-15 03:10:14,497 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 19636 transitions. Word has length 179 [2019-10-15 03:10:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:14,498 INFO L462 AbstractCegarLoop]: Abstraction has 11957 states and 19636 transitions. [2019-10-15 03:10:14,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:10:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 19636 transitions. [2019-10-15 03:10:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 03:10:14,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:14,509 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:14,509 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash 502984796, now seen corresponding path program 1 times [2019-10-15 03:10:14,510 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:14,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142221068] [2019-10-15 03:10:14,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:14,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:10:14,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142221068] [2019-10-15 03:10:14,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704855390] [2019-10-15 03:10:14,937 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 03:10:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:15,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:15,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 03:10:15,800 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:10:16,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:16,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:10:16,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798280683] [2019-10-15 03:10:16,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:16,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:16,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:16,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:10:16,501 INFO L87 Difference]: Start difference. First operand 11957 states and 19636 transitions. Second operand 4 states. [2019-10-15 03:10:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:17,399 INFO L93 Difference]: Finished difference Result 25197 states and 42524 transitions. [2019-10-15 03:10:17,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:17,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2019-10-15 03:10:17,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:17,496 INFO L225 Difference]: With dead ends: 25197 [2019-10-15 03:10:17,497 INFO L226 Difference]: Without dead ends: 13283 [2019-10-15 03:10:17,547 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 367 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:10:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13283 states. [2019-10-15 03:10:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13283 to 13283. [2019-10-15 03:10:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13283 states. [2019-10-15 03:10:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 22118 transitions. [2019-10-15 03:10:18,508 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 22118 transitions. Word has length 184 [2019-10-15 03:10:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:18,509 INFO L462 AbstractCegarLoop]: Abstraction has 13283 states and 22118 transitions. [2019-10-15 03:10:18,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 22118 transitions. [2019-10-15 03:10:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 03:10:18,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:18,519 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:18,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:18,729 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1854757790, now seen corresponding path program 1 times [2019-10-15 03:10:18,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:18,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501252412] [2019-10-15 03:10:18,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:18,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:18,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:10:19,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501252412] [2019-10-15 03:10:19,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612083003] [2019-10-15 03:10:19,145 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 03:10:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:19,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:19,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:10:19,919 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:10:20,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:20,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:10:20,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357561085] [2019-10-15 03:10:20,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:20,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:20,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:10:20,458 INFO L87 Difference]: Start difference. First operand 13283 states and 22118 transitions. Second operand 4 states. [2019-10-15 03:10:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:22,111 INFO L93 Difference]: Finished difference Result 27849 states and 47454 transitions. [2019-10-15 03:10:22,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:10:22,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2019-10-15 03:10:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:22,194 INFO L225 Difference]: With dead ends: 27849 [2019-10-15 03:10:22,195 INFO L226 Difference]: Without dead ends: 14609 [2019-10-15 03:10:22,237 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:10:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14609 states. [2019-10-15 03:10:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14609 to 14609. [2019-10-15 03:10:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14609 states. [2019-10-15 03:10:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14609 states to 14609 states and 24600 transitions. [2019-10-15 03:10:23,059 INFO L78 Accepts]: Start accepts. Automaton has 14609 states and 24600 transitions. Word has length 189 [2019-10-15 03:10:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:23,060 INFO L462 AbstractCegarLoop]: Abstraction has 14609 states and 24600 transitions. [2019-10-15 03:10:23,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 14609 states and 24600 transitions. [2019-10-15 03:10:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 03:10:23,067 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:23,068 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:10:23,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:23,285 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:23,286 INFO L82 PathProgramCache]: Analyzing trace with hash -295601390, now seen corresponding path program 1 times [2019-10-15 03:10:23,286 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:23,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100452297] [2019-10-15 03:10:23,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:23,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:23,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-15 03:10:23,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100452297] [2019-10-15 03:10:23,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981000301] [2019-10-15 03:10:23,576 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