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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:40,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:40,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:40,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:40,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:40,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:40,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:40,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:40,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:40,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:40,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:40,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:40,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:40,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:40,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:40,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:40,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:40,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:40,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:40,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:40,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:40,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:40,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:40,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:40,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:40,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:40,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:40,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:40,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:40,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:40,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:40,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:40,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:40,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:40,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:40,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:40,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:40,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:40,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:40,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:40,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:40,537 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 23:03:40,560 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:40,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:40,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:40,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:40,564 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:40,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:40,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:40,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:40,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:40,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:40,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:40,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:40,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:40,567 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:40,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:40,568 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:40,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:40,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:40,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:40,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:40,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:40,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:40,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:40,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:40,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:40,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:40,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:40,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:40,570 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 23:03:40,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:40,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:40,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:40,927 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:40,927 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:40,928 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-10-13 23:03:40,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a283c7a37/22ed3ad53b9e49549d0d09caa3a76d39/FLAG3bb6b3924 [2019-10-13 23:03:41,733 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:41,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product11.cil.c [2019-10-13 23:03:41,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a283c7a37/22ed3ad53b9e49549d0d09caa3a76d39/FLAG3bb6b3924 [2019-10-13 23:03:41,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a283c7a37/22ed3ad53b9e49549d0d09caa3a76d39 [2019-10-13 23:03:41,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:41,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:41,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:41,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:41,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:41,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:41" (1/1) ... [2019-10-13 23:03:41,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303c62d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:41, skipping insertion in model container [2019-10-13 23:03:41,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:41" (1/1) ... [2019-10-13 23:03:41,925 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:42,025 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:42,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:42,825 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:42,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:43,013 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:43,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43 WrapperNode [2019-10-13 23:03:43,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:43,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:43,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:43,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:43,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:43,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:43,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:43,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:43,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (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 23:03:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:43,331 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:43,331 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:43,331 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:43,331 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:43,332 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:43,333 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:43,333 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:43,333 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:43,333 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:43,343 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:43,348 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:43,358 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:43,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:43,358 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:43,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:43,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:43,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:43,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:03:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:03:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:43,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:43,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:43,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:48,616 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:48,616 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:48,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:48 BoogieIcfgContainer [2019-10-13 23:03:48,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:48,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:48,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:48,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:48,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:41" (1/3) ... [2019-10-13 23:03:48,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d9f7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:48, skipping insertion in model container [2019-10-13 23:03:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43" (2/3) ... [2019-10-13 23:03:48,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d9f7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:48, skipping insertion in model container [2019-10-13 23:03:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:48" (3/3) ... [2019-10-13 23:03:48,628 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2019-10-13 23:03:48,639 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:48,652 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:48,664 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:48,709 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:48,709 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:48,710 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:48,710 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:48,710 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:48,710 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:48,710 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:48,710 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states. [2019-10-13 23:03:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:03:48,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:48,807 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 23:03:48,812 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash -977747574, now seen corresponding path program 1 times [2019-10-13 23:03:48,835 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:48,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029287057] [2019-10-13 23:03:48,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:48,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:49,518 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 23:03:49,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029287057] [2019-10-13 23:03:49,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:49,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:49,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520088750] [2019-10-13 23:03:49,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:49,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:49,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:49,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:49,544 INFO L87 Difference]: Start difference. First operand 564 states. Second operand 2 states. [2019-10-13 23:03:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:49,649 INFO L93 Difference]: Finished difference Result 467 states and 697 transitions. [2019-10-13 23:03:49,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:49,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:03:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:49,685 INFO L225 Difference]: With dead ends: 467 [2019-10-13 23:03:49,685 INFO L226 Difference]: Without dead ends: 433 [2019-10-13 23:03:49,694 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 23:03:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-13 23:03:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-10-13 23:03:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-13 23:03:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 646 transitions. [2019-10-13 23:03:49,801 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 646 transitions. Word has length 112 [2019-10-13 23:03:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:49,803 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 646 transitions. [2019-10-13 23:03:49,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 646 transitions. [2019-10-13 23:03:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:03:49,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:49,810 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 23:03:49,810 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:49,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1340082542, now seen corresponding path program 1 times [2019-10-13 23:03:49,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:49,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426448668] [2019-10-13 23:03:49,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,811 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:49,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:50,243 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 23:03:50,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426448668] [2019-10-13 23:03:50,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:50,244 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:50,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230983756] [2019-10-13 23:03:50,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:50,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:50,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:50,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:50,248 INFO L87 Difference]: Start difference. First operand 433 states and 646 transitions. Second operand 7 states. [2019-10-13 23:03:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:54,058 INFO L93 Difference]: Finished difference Result 1226 states and 1875 transitions. [2019-10-13 23:03:54,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:54,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:03:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:54,066 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 23:03:54,066 INFO L226 Difference]: Without dead ends: 835 [2019-10-13 23:03:54,077 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 23:03:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2019-10-13 23:03:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 810. [2019-10-13 23:03:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-13 23:03:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1235 transitions. [2019-10-13 23:03:54,207 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1235 transitions. Word has length 113 [2019-10-13 23:03:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:54,208 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1235 transitions. [2019-10-13 23:03:54,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1235 transitions. [2019-10-13 23:03:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:03:54,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:54,212 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 23:03:54,212 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1965967932, now seen corresponding path program 1 times [2019-10-13 23:03:54,213 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:54,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346595441] [2019-10-13 23:03:54,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:54,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:54,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:54,382 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 23:03:54,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346595441] [2019-10-13 23:03:54,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:54,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:54,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476295117] [2019-10-13 23:03:54,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:54,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:54,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:54,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:54,385 INFO L87 Difference]: Start difference. First operand 810 states and 1235 transitions. Second operand 4 states. [2019-10-13 23:03:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:56,198 INFO L93 Difference]: Finished difference Result 2424 states and 3790 transitions. [2019-10-13 23:03:56,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:56,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:03:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:56,219 INFO L225 Difference]: With dead ends: 2424 [2019-10-13 23:03:56,220 INFO L226 Difference]: Without dead ends: 1656 [2019-10-13 23:03:56,225 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 23:03:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2019-10-13 23:03:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1558. [2019-10-13 23:03:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-10-13 23:03:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2421 transitions. [2019-10-13 23:03:56,359 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2421 transitions. Word has length 117 [2019-10-13 23:03:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:56,362 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2421 transitions. [2019-10-13 23:03:56,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2421 transitions. [2019-10-13 23:03:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:03:56,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:56,368 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 23:03:56,369 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:56,369 INFO L82 PathProgramCache]: Analyzing trace with hash -816771845, now seen corresponding path program 1 times [2019-10-13 23:03:56,370 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:56,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798614190] [2019-10-13 23:03:56,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:56,540 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 23:03:56,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798614190] [2019-10-13 23:03:56,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:56,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:56,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188015817] [2019-10-13 23:03:56,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:56,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:56,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:56,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:56,542 INFO L87 Difference]: Start difference. First operand 1558 states and 2421 transitions. Second operand 4 states. [2019-10-13 23:03:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:58,452 INFO L93 Difference]: Finished difference Result 4615 states and 7330 transitions. [2019-10-13 23:03:58,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:58,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:03:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:58,495 INFO L225 Difference]: With dead ends: 4615 [2019-10-13 23:03:58,495 INFO L226 Difference]: Without dead ends: 3100 [2019-10-13 23:03:58,510 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 23:03:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2019-10-13 23:03:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2979. [2019-10-13 23:03:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2019-10-13 23:03:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4694 transitions. [2019-10-13 23:03:58,797 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4694 transitions. Word has length 118 [2019-10-13 23:03:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:58,801 INFO L462 AbstractCegarLoop]: Abstraction has 2979 states and 4694 transitions. [2019-10-13 23:03:58,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4694 transitions. [2019-10-13 23:03:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:03:58,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:58,810 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 23:03:58,811 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash 448572390, now seen corresponding path program 1 times [2019-10-13 23:03:58,812 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:58,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202348889] [2019-10-13 23:03:58,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:59,054 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 23:03:59,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202348889] [2019-10-13 23:03:59,057 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:59,057 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:59,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748025099] [2019-10-13 23:03:59,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:59,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:59,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:59,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:59,060 INFO L87 Difference]: Start difference. First operand 2979 states and 4694 transitions. Second operand 4 states. [2019-10-13 23:04:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:01,014 INFO L93 Difference]: Finished difference Result 8930 states and 14486 transitions. [2019-10-13 23:04:01,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:01,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:04:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:01,087 INFO L225 Difference]: With dead ends: 8930 [2019-10-13 23:04:01,087 INFO L226 Difference]: Without dead ends: 5996 [2019-10-13 23:04:01,114 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 23:04:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2019-10-13 23:04:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5830. [2019-10-13 23:04:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5830 states. [2019-10-13 23:04:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 9356 transitions. [2019-10-13 23:04:01,657 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 9356 transitions. Word has length 119 [2019-10-13 23:04:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:01,660 INFO L462 AbstractCegarLoop]: Abstraction has 5830 states and 9356 transitions. [2019-10-13 23:04:01,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 9356 transitions. [2019-10-13 23:04:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:01,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:01,674 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 23:04:01,674 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1019541917, now seen corresponding path program 1 times [2019-10-13 23:04:01,675 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:01,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113393805] [2019-10-13 23:04:01,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:01,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:01,880 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 23:04:01,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113393805] [2019-10-13 23:04:01,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:01,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:01,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126847005] [2019-10-13 23:04:01,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:01,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:01,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:01,883 INFO L87 Difference]: Start difference. First operand 5830 states and 9356 transitions. Second operand 4 states. [2019-10-13 23:04:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:03,954 INFO L93 Difference]: Finished difference Result 17585 states and 29529 transitions. [2019-10-13 23:04:03,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:03,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:04,083 INFO L225 Difference]: With dead ends: 17585 [2019-10-13 23:04:04,084 INFO L226 Difference]: Without dead ends: 11804 [2019-10-13 23:04:04,120 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 23:04:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11804 states. [2019-10-13 23:04:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11804 to 11549. [2019-10-13 23:04:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11549 states. [2019-10-13 23:04:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 19090 transitions. [2019-10-13 23:04:05,683 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 19090 transitions. Word has length 120 [2019-10-13 23:04:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:05,684 INFO L462 AbstractCegarLoop]: Abstraction has 11549 states and 19090 transitions. [2019-10-13 23:04:05,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 19090 transitions. [2019-10-13 23:04:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:05,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:05,688 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 23:04:05,688 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1539731976, now seen corresponding path program 1 times [2019-10-13 23:04:05,689 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:05,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088856016] [2019-10-13 23:04:05,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:05,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:05,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:05,860 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 23:04:05,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088856016] [2019-10-13 23:04:05,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:05,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:05,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947837108] [2019-10-13 23:04:05,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:05,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:05,862 INFO L87 Difference]: Start difference. First operand 11549 states and 19090 transitions. Second operand 4 states. [2019-10-13 23:04:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:08,338 INFO L93 Difference]: Finished difference Result 34972 states and 62257 transitions. [2019-10-13 23:04:08,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:08,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:08,566 INFO L225 Difference]: With dead ends: 34972 [2019-10-13 23:04:08,567 INFO L226 Difference]: Without dead ends: 23468 [2019-10-13 23:04:08,666 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 23:04:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23468 states. [2019-10-13 23:04:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23468 to 22886. [2019-10-13 23:04:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22886 states. [2019-10-13 23:04:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22886 states to 22886 states and 39461 transitions. [2019-10-13 23:04:10,523 INFO L78 Accepts]: Start accepts. Automaton has 22886 states and 39461 transitions. Word has length 121 [2019-10-13 23:04:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:10,525 INFO L462 AbstractCegarLoop]: Abstraction has 22886 states and 39461 transitions. [2019-10-13 23:04:10,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22886 states and 39461 transitions. [2019-10-13 23:04:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 23:04:10,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:10,533 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] [2019-10-13 23:04:10,533 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1356193321, now seen corresponding path program 1 times [2019-10-13 23:04:10,535 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:10,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902893559] [2019-10-13 23:04:10,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:10,924 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 23:04:10,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902893559] [2019-10-13 23:04:10,925 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:10,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:10,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975947361] [2019-10-13 23:04:10,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:10,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:10,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:10,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:10,929 INFO L87 Difference]: Start difference. First operand 22886 states and 39461 transitions. Second operand 5 states. [2019-10-13 23:04:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:11,730 INFO L93 Difference]: Finished difference Result 46151 states and 82613 transitions. [2019-10-13 23:04:11,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:11,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-10-13 23:04:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:11,884 INFO L225 Difference]: With dead ends: 46151 [2019-10-13 23:04:11,885 INFO L226 Difference]: Without dead ends: 23308 [2019-10-13 23:04:11,955 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 [2019-10-13 23:04:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23308 states.