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_spec2_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:10,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:10,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:10,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:10,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:10,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:10,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:10,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:10,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:10,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:10,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:10,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:10,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:10,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:10,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:10,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:10,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:10,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:10,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:10,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:10,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:10,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:10,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:10,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:10,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:10,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:10,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:10,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:10,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:10,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:10,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:10,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:10,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:10,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:10,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:10,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:10,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:10,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:10,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:10,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:10,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:10,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:10,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:10,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:10,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:10,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:10,257 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:10,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:10,257 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:10,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:10,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:10,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:10,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:10,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:10,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:10,260 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:10,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:10,260 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:10,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:10,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:10,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:10,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:10,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:10,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:10,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:10,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:10,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:10,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:10,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:10,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:10,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:10,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:10,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:10,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:10,564 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:10,564 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:10,565 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-10-13 23:04:10,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee1b51e4/00e95b1bff304059875a6d2129bcee24/FLAG5762f7281 [2019-10-13 23:04:11,236 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:11,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-10-13 23:04:11,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee1b51e4/00e95b1bff304059875a6d2129bcee24/FLAG5762f7281 [2019-10-13 23:04:11,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dee1b51e4/00e95b1bff304059875a6d2129bcee24 [2019-10-13 23:04:11,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:11,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:11,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:11,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:11,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:11,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4771d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11, skipping insertion in model container [2019-10-13 23:04:11,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:11,587 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:12,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:12,401 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:12,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:12,611 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:12,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12 WrapperNode [2019-10-13 23:04:12,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:12,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:12,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:12,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:12,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:12,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:12,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:12,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:12,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:12,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:12,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:12,956 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:12,957 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:12,957 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:12,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:12,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:12,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:12,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:12,959 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:12,959 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:12,959 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:12,961 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:12,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:12,963 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:12,964 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:12,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:12,964 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:12,964 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:12,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:12,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:12,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:12,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:12,970 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:17,933 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:17,934 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:17,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:17 BoogieIcfgContainer [2019-10-13 23:04:17,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:17,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:17,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:17,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:17,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:11" (1/3) ... [2019-10-13 23:04:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207ba4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:17, skipping insertion in model container [2019-10-13 23:04:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (2/3) ... [2019-10-13 23:04:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207ba4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:17, skipping insertion in model container [2019-10-13 23:04:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:17" (3/3) ... [2019-10-13 23:04:17,949 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2019-10-13 23:04:17,960 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:17,972 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:17,984 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:18,029 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:18,029 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:18,029 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:18,029 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:18,029 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:18,030 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:18,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:18,030 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states. [2019-10-13 23:04:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:18,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:18,112 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] [2019-10-13 23:04:18,116 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:18,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:18,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1500681736, now seen corresponding path program 1 times [2019-10-13 23:04:18,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:18,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747983224] [2019-10-13 23:04:18,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:18,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747983224] [2019-10-13 23:04:18,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:18,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:18,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892436801] [2019-10-13 23:04:18,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:18,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:18,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:18,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:18,898 INFO L87 Difference]: Start difference. First operand 576 states. Second operand 2 states. [2019-10-13 23:04:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:18,962 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2019-10-13 23:04:18,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:18,964 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:04:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:18,989 INFO L225 Difference]: With dead ends: 479 [2019-10-13 23:04:18,990 INFO L226 Difference]: Without dead ends: 445 [2019-10-13 23:04:18,994 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 [2019-10-13 23:04:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-13 23:04:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-13 23:04:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-13 23:04:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 659 transitions. [2019-10-13 23:04:19,118 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 659 transitions. Word has length 112 [2019-10-13 23:04:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:19,126 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 659 transitions. [2019-10-13 23:04:19,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 659 transitions. [2019-10-13 23:04:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:04:19,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:19,140 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] [2019-10-13 23:04:19,142 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash 757640429, now seen corresponding path program 1 times [2019-10-13 23:04:19,143 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:19,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892426715] [2019-10-13 23:04:19,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:19,609 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892426715] [2019-10-13 23:04:19,610 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:19,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:19,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478443688] [2019-10-13 23:04:19,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:19,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:19,613 INFO L87 Difference]: Start difference. First operand 445 states and 659 transitions. Second operand 7 states. [2019-10-13 23:04:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:23,480 INFO L93 Difference]: Finished difference Result 1262 states and 1914 transitions. [2019-10-13 23:04:23,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:23,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:04:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:23,490 INFO L225 Difference]: With dead ends: 1262 [2019-10-13 23:04:23,491 INFO L226 Difference]: Without dead ends: 859 [2019-10-13 23:04:23,497 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 [2019-10-13 23:04:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2019-10-13 23:04:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 834. [2019-10-13 23:04:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2019-10-13 23:04:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1261 transitions. [2019-10-13 23:04:23,592 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1261 transitions. Word has length 113 [2019-10-13 23:04:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:23,593 INFO L462 AbstractCegarLoop]: Abstraction has 834 states and 1261 transitions. [2019-10-13 23:04:23,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1261 transitions. [2019-10-13 23:04:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:04:23,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:23,598 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] [2019-10-13 23:04:23,598 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1189512345, now seen corresponding path program 1 times [2019-10-13 23:04:23,599 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:23,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984691984] [2019-10-13 23:04:23,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:23,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984691984] [2019-10-13 23:04:23,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:23,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:23,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502879893] [2019-10-13 23:04:23,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:23,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:23,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:23,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:23,781 INFO L87 Difference]: Start difference. First operand 834 states and 1261 transitions. Second operand 4 states. [2019-10-13 23:04:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:25,525 INFO L93 Difference]: Finished difference Result 2486 states and 3856 transitions. [2019-10-13 23:04:25,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:25,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:04:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:25,546 INFO L225 Difference]: With dead ends: 2486 [2019-10-13 23:04:25,546 INFO L226 Difference]: Without dead ends: 1694 [2019-10-13 23:04:25,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-10-13 23:04:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1596. [2019-10-13 23:04:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2019-10-13 23:04:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2461 transitions. [2019-10-13 23:04:25,851 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2461 transitions. Word has length 117 [2019-10-13 23:04:25,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:25,852 INFO L462 AbstractCegarLoop]: Abstraction has 1596 states and 2461 transitions. [2019-10-13 23:04:25,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2461 transitions. [2019-10-13 23:04:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:25,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:25,860 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] [2019-10-13 23:04:25,861 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1781138496, now seen corresponding path program 1 times [2019-10-13 23:04:25,862 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:25,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598638226] [2019-10-13 23:04:25,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:25,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:26,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598638226] [2019-10-13 23:04:26,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:26,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:26,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667600889] [2019-10-13 23:04:26,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:26,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:26,171 INFO L87 Difference]: Start difference. First operand 1596 states and 2461 transitions. Second operand 4 states. [2019-10-13 23:04:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:28,367 INFO L93 Difference]: Finished difference Result 4719 states and 7438 transitions. [2019-10-13 23:04:28,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:28,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:28,398 INFO L225 Difference]: With dead ends: 4719 [2019-10-13 23:04:28,399 INFO L226 Difference]: Without dead ends: 3166 [2019-10-13 23:04:28,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2019-10-13 23:04:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3045. [2019-10-13 23:04:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2019-10-13 23:04:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4762 transitions. [2019-10-13 23:04:28,641 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4762 transitions. Word has length 118 [2019-10-13 23:04:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:28,642 INFO L462 AbstractCegarLoop]: Abstraction has 3045 states and 4762 transitions. [2019-10-13 23:04:28,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4762 transitions. [2019-10-13 23:04:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:28,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:28,646 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] [2019-10-13 23:04:28,647 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash 617969851, now seen corresponding path program 1 times [2019-10-13 23:04:28,647 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:28,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106894501] [2019-10-13 23:04:28,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:28,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106894501] [2019-10-13 23:04:28,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:28,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:28,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314247513] [2019-10-13 23:04:28,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:28,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:28,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:28,830 INFO L87 Difference]: Start difference. First operand 3045 states and 4762 transitions. Second operand 4 states. [2019-10-13 23:04:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:30,888 INFO L93 Difference]: Finished difference Result 9118 states and 14678 transitions. [2019-10-13 23:04:30,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:30,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:04:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:30,943 INFO L225 Difference]: With dead ends: 9118 [2019-10-13 23:04:30,944 INFO L226 Difference]: Without dead ends: 6118 [2019-10-13 23:04:30,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2019-10-13 23:04:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5952. [2019-10-13 23:04:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5952 states. [2019-10-13 23:04:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 9480 transitions. [2019-10-13 23:04:31,382 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 9480 transitions. Word has length 119 [2019-10-13 23:04:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:31,385 INFO L462 AbstractCegarLoop]: Abstraction has 5952 states and 9480 transitions. [2019-10-13 23:04:31,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 9480 transitions. [2019-10-13 23:04:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:31,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:31,389 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] [2019-10-13 23:04:31,389 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1975888482, now seen corresponding path program 1 times [2019-10-13 23:04:31,390 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:31,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934379982] [2019-10-13 23:04:31,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:31,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934379982] [2019-10-13 23:04:31,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:31,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:31,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118323509] [2019-10-13 23:04:31,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:31,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:31,756 INFO L87 Difference]: Start difference. First operand 5952 states and 9480 transitions. Second operand 4 states. [2019-10-13 23:04:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:33,796 INFO L93 Difference]: Finished difference Result 17941 states and 29889 transitions. [2019-10-13 23:04:33,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:33,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:33,919 INFO L225 Difference]: With dead ends: 17941 [2019-10-13 23:04:33,919 INFO L226 Difference]: Without dead ends: 12038 [2019-10-13 23:04:33,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2019-10-13 23:04:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 11783. [2019-10-13 23:04:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11783 states. [2019-10-13 23:04:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 19326 transitions. [2019-10-13 23:04:34,765 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 19326 transitions. Word has length 120 [2019-10-13 23:04:34,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:34,766 INFO L462 AbstractCegarLoop]: Abstraction has 11783 states and 19326 transitions. [2019-10-13 23:04:34,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 19326 transitions. [2019-10-13 23:04:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:34,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:34,770 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] [2019-10-13 23:04:34,770 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:34,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1121696989, now seen corresponding path program 1 times [2019-10-13 23:04:34,771 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:34,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661154698] [2019-10-13 23:04:34,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:34,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661154698] [2019-10-13 23:04:34,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:34,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:34,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454550472] [2019-10-13 23:04:34,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:34,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:34,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:34,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:34,957 INFO L87 Difference]: Start difference. First operand 11783 states and 19326 transitions. Second operand 4 states. [2019-10-13 23:04:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:37,739 INFO L93 Difference]: Finished difference Result 35664 states and 62953 transitions. [2019-10-13 23:04:37,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:37,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:37,925 INFO L225 Difference]: With dead ends: 35664 [2019-10-13 23:04:37,926 INFO L226 Difference]: Without dead ends: 23926 [2019-10-13 23:04:37,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23926 states. [2019-10-13 23:04:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23926 to 23344. [2019-10-13 23:04:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23344 states. [2019-10-13 23:04:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23344 states to 23344 states and 39921 transitions. [2019-10-13 23:04:40,585 INFO L78 Accepts]: Start accepts. Automaton has 23344 states and 39921 transitions. Word has length 121 [2019-10-13 23:04:40,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:40,586 INFO L462 AbstractCegarLoop]: Abstraction has 23344 states and 39921 transitions. [2019-10-13 23:04:40,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 23344 states and 39921 transitions. [2019-10-13 23:04:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 23:04:40,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:40,594 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] [2019-10-13 23:04:40,595 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:40,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2095963819, now seen corresponding path program 1 times [2019-10-13 23:04:40,595 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:40,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830523249] [2019-10-13 23:04:40,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:04:40,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830523249] [2019-10-13 23:04:40,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:40,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:40,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936718050] [2019-10-13 23:04:40,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:40,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:40,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:40,797 INFO L87 Difference]: Start difference. First operand 23344 states and 39921 transitions. Second operand 5 states.