java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:43,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:43,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:43,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:43,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:43,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:43,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:43,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:43,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:43,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:43,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:43,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:43,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:43,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:43,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:43,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:43,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:43,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:43,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:43,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:43,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:43,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:43,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:43,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:43,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:43,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:43,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:43,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:43,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:43,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:43,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:43,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:43,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:43,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:43,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:43,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:43,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:43,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:43,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:43,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:43,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:43,418 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 23:04:43,433 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:43,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:43,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:43,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:43,435 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:43,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:43,435 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:43,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:43,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:43,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:43,437 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:43,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:43,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:43,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:43,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:43,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:43,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:43,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:43,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:43,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:43,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:43,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:43,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:43,439 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 23:04:43,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:43,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:43,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:43,735 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:43,736 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:43,736 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-13 23:04:43,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62aa45b6/a1f378f78f114117b55bcd1ee70b03c4/FLAGef1cfd036 [2019-10-13 23:04:44,516 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:44,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-13 23:04:44,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62aa45b6/a1f378f78f114117b55bcd1ee70b03c4/FLAGef1cfd036 [2019-10-13 23:04:44,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62aa45b6/a1f378f78f114117b55bcd1ee70b03c4 [2019-10-13 23:04:44,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:44,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:44,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:44,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:44,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:44,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:44" (1/1) ... [2019-10-13 23:04:44,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30047e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:44, skipping insertion in model container [2019-10-13 23:04:44,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:44" (1/1) ... [2019-10-13 23:04:44,710 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:44,774 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:45,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:45,525 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:45,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:45,733 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:45,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45 WrapperNode [2019-10-13 23:04:45,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:45,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:45,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:45,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:45,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:45,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:45,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:45,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:45,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (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 23:04:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:46,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:46,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:46,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:46,017 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:46,018 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:46,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:46,021 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:46,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:46,021 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:46,024 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:46,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:46,024 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:46,024 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:46,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:46,025 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-13 23:04:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-13 23:04:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:46,051 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:46,051 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:46,051 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:46,052 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:46,052 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:46,052 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:46,056 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:46,060 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:46,061 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:46,062 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:46,063 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-13 23:04:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:51,233 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:51,233 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:51,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:51 BoogieIcfgContainer [2019-10-13 23:04:51,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:51,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:51,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:51,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:51,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:44" (1/3) ... [2019-10-13 23:04:51,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:51, skipping insertion in model container [2019-10-13 23:04:51,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45" (2/3) ... [2019-10-13 23:04:51,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:51, skipping insertion in model container [2019-10-13 23:04:51,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:51" (3/3) ... [2019-10-13 23:04:51,243 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2019-10-13 23:04:51,254 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:51,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:51,275 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:51,306 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:51,306 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:51,306 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:51,306 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:51,306 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:51,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:51,307 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:51,307 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2019-10-13 23:04:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:51,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:51,353 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:51,355 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:51,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1732124610, now seen corresponding path program 1 times [2019-10-13 23:04:51,371 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:51,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309096521] [2019-10-13 23:04:51,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:51,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:51,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:52,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309096521] [2019-10-13 23:04:52,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:52,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:04:52,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415545813] [2019-10-13 23:04:52,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:04:52,132 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:52,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:04:52,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:52,150 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 8 states. [2019-10-13 23:04:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:56,257 INFO L93 Difference]: Finished difference Result 1630 states and 2514 transitions. [2019-10-13 23:04:56,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:04:56,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-13 23:04:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:56,291 INFO L225 Difference]: With dead ends: 1630 [2019-10-13 23:04:56,291 INFO L226 Difference]: Without dead ends: 1175 [2019-10-13 23:04:56,302 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-13 23:04:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1165. [2019-10-13 23:04:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-13 23:04:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1750 transitions. [2019-10-13 23:04:56,490 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1750 transitions. Word has length 80 [2019-10-13 23:04:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:56,491 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1750 transitions. [2019-10-13 23:04:56,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:04:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1750 transitions. [2019-10-13 23:04:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:04:56,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:56,496 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:56,496 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -320565942, now seen corresponding path program 1 times [2019-10-13 23:04:56,497 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:56,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581941902] [2019-10-13 23:04:56,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:56,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:56,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:56,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581941902] [2019-10-13 23:04:56,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:56,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:04:56,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707748363] [2019-10-13 23:04:56,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:04:56,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:56,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:04:56,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:04:56,902 INFO L87 Difference]: Start difference. First operand 1165 states and 1750 transitions. Second operand 3 states. [2019-10-13 23:04:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:57,140 INFO L93 Difference]: Finished difference Result 3423 states and 5209 transitions. [2019-10-13 23:04:57,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:04:57,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:04:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:57,173 INFO L225 Difference]: With dead ends: 3423 [2019-10-13 23:04:57,174 INFO L226 Difference]: Without dead ends: 2291 [2019-10-13 23:04:57,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:04:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-10-13 23:04:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2167. [2019-10-13 23:04:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2019-10-13 23:04:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3304 transitions. [2019-10-13 23:04:57,390 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3304 transitions. Word has length 81 [2019-10-13 23:04:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:57,393 INFO L462 AbstractCegarLoop]: Abstraction has 2167 states and 3304 transitions. [2019-10-13 23:04:57,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:04:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3304 transitions. [2019-10-13 23:04:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:57,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:57,407 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:57,407 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -636058728, now seen corresponding path program 1 times [2019-10-13 23:04:57,411 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:57,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092723317] [2019-10-13 23:04:57,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:57,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:57,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:57,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092723317] [2019-10-13 23:04:57,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:57,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:04:57,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484373193] [2019-10-13 23:04:57,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:04:57,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:57,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:04:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:57,765 INFO L87 Difference]: Start difference. First operand 2167 states and 3304 transitions. Second operand 10 states. [2019-10-13 23:04:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:59,497 INFO L93 Difference]: Finished difference Result 4893 states and 7479 transitions. [2019-10-13 23:04:59,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:04:59,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2019-10-13 23:04:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:59,521 INFO L225 Difference]: With dead ends: 4893 [2019-10-13 23:04:59,521 INFO L226 Difference]: Without dead ends: 2757 [2019-10-13 23:04:59,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:04:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2019-10-13 23:04:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2745. [2019-10-13 23:04:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2019-10-13 23:04:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4139 transitions. [2019-10-13 23:04:59,703 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4139 transitions. Word has length 112 [2019-10-13 23:04:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:59,704 INFO L462 AbstractCegarLoop]: Abstraction has 2745 states and 4139 transitions. [2019-10-13 23:04:59,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:04:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4139 transitions. [2019-10-13 23:04:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:04:59,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,710 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:59,710 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1453420152, now seen corresponding path program 1 times [2019-10-13 23:04:59,711 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010055675] [2019-10-13 23:04:59,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:59,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010055675] [2019-10-13 23:04:59,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:59,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630043150] [2019-10-13 23:04:59,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:59,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:59,978 INFO L87 Difference]: Start difference. First operand 2745 states and 4139 transitions. Second operand 7 states. [2019-10-13 23:05:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:02,758 INFO L93 Difference]: Finished difference Result 8108 states and 12664 transitions. [2019-10-13 23:05:02,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:02,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:05:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:02,805 INFO L225 Difference]: With dead ends: 8108 [2019-10-13 23:05:02,805 INFO L226 Difference]: Without dead ends: 5394 [2019-10-13 23:05:02,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2019-10-13 23:05:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 5287. [2019-10-13 23:05:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2019-10-13 23:05:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 8095 transitions. [2019-10-13 23:05:03,088 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 8095 transitions. Word has length 113 [2019-10-13 23:05:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:03,089 INFO L462 AbstractCegarLoop]: Abstraction has 5287 states and 8095 transitions. [2019-10-13 23:05:03,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 8095 transitions. [2019-10-13 23:05:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:05:03,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:03,093 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:05:03,093 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1698191104, now seen corresponding path program 1 times [2019-10-13 23:05:03,094 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:03,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519881415] [2019-10-13 23:05:03,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519881415] [2019-10-13 23:05:03,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358716041] [2019-10-13 23:05:03,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:04,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:04,179 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:04,347 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:04,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:04,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459289333] [2019-10-13 23:05:04,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:04,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:04,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:04,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:04,350 INFO L87 Difference]: Start difference. First operand 5287 states and 8095 transitions. Second operand 3 states. [2019-10-13 23:05:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:04,969 INFO L93 Difference]: Finished difference Result 14687 states and 23998 transitions. [2019-10-13 23:05:04,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:04,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-13 23:05:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:05,056 INFO L225 Difference]: With dead ends: 14687 [2019-10-13 23:05:05,058 INFO L226 Difference]: Without dead ends: 9431 [2019-10-13 23:05:05,103 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2019-10-13 23:05:05,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 8931. [2019-10-13 23:05:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8931 states. [2019-10-13 23:05:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8931 states to 8931 states and 13895 transitions. [2019-10-13 23:05:05,799 INFO L78 Accepts]: Start accepts. Automaton has 8931 states and 13895 transitions. Word has length 112 [2019-10-13 23:05:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:05,802 INFO L462 AbstractCegarLoop]: Abstraction has 8931 states and 13895 transitions. [2019-10-13 23:05:05,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8931 states and 13895 transitions. [2019-10-13 23:05:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:05:05,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:05,807 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:05:06,018 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:06,018 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:06,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1601228581, now seen corresponding path program 1 times [2019-10-13 23:05:06,020 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:06,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013738138] [2019-10-13 23:05:06,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:06,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:06,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013738138] [2019-10-13 23:05:06,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820112382] [2019-10-13 23:05:06,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:07,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:07,107 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:07,245 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:07,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:07,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321847995] [2019-10-13 23:05:07,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:07,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:07,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:07,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:07,247 INFO L87 Difference]: Start difference. First operand 8931 states and 13895 transitions. Second operand 3 states. [2019-10-13 23:05:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:07,854 INFO L93 Difference]: Finished difference Result 19685 states and 31776 transitions. [2019-10-13 23:05:07,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:07,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-13 23:05:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:07,959 INFO L225 Difference]: With dead ends: 19685 [2019-10-13 23:05:07,960 INFO L226 Difference]: Without dead ends: 10785 [2019-10-13 23:05:08,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10785 states. [2019-10-13 23:05:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10785 to 10513. [2019-10-13 23:05:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-10-13 23:05:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16373 transitions. [2019-10-13 23:05:08,533 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16373 transitions. Word has length 113 [2019-10-13 23:05:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:08,533 INFO L462 AbstractCegarLoop]: Abstraction has 10513 states and 16373 transitions. [2019-10-13 23:05:08,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16373 transitions. [2019-10-13 23:05:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:08,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:08,538 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:08,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:08,747 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1834686710, now seen corresponding path program 1 times [2019-10-13 23:05:08,748 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001598843] [2019-10-13 23:05:08,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 23:05:09,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001598843] [2019-10-13 23:05:09,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:09,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:09,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213464347] [2019-10-13 23:05:09,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:09,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:09,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:09,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:09,057 INFO L87 Difference]: Start difference. First operand 10513 states and 16373 transitions. Second operand 10 states. [2019-10-13 23:05:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:13,073 INFO L93 Difference]: Finished difference Result 34014 states and 55817 transitions. [2019-10-13 23:05:13,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:13,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2019-10-13 23:05:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:13,222 INFO L225 Difference]: With dead ends: 34014 [2019-10-13 23:05:13,222 INFO L226 Difference]: Without dead ends: 23532 [2019-10-13 23:05:13,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23532 states. [2019-10-13 23:05:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23532 to 23268. [2019-10-13 23:05:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23268 states.