/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:13:36,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:13:36,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:13:36,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:13:36,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:13:36,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:13:36,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:13:36,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:13:36,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:13:36,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:13:36,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:13:36,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:13:36,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:13:36,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:13:36,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:13:36,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:13:36,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:13:36,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:13:36,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:13:36,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:13:36,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:13:36,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:13:36,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:13:36,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:13:36,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:13:36,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:13:36,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:13:36,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:13:36,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:13:36,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:13:36,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:13:36,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:13:36,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:13:36,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:13:36,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:13:36,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:13:36,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:13:36,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:13:36,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:13:36,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:13:36,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:13:36,552 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 [2019-11-07 04:13:36,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:13:36,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:13:36,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:13:36,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:13:36,569 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:13:36,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:13:36,569 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:13:36,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:13:36,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:13:36,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:13:36,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:13:36,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:13:36,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:13:36,571 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:13:36,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:13:36,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:13:36,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:13:36,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:13:36,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:13:36,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:13:36,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:13:36,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:36,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:13:36,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:13:36,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:13:36,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:13:36,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:13:36,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:13:36,574 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 [2019-11-07 04:13:36,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:13:36,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:13:36,905 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:13:36,906 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:13:36,907 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:13:36,907 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-11-07 04:13:36,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e80af11d/6e6fdc20a53148f284c0e487134e18b3/FLAG8c1305c6a [2019-11-07 04:13:37,601 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:13:37,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-11-07 04:13:37,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e80af11d/6e6fdc20a53148f284c0e487134e18b3/FLAG8c1305c6a [2019-11-07 04:13:37,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e80af11d/6e6fdc20a53148f284c0e487134e18b3 [2019-11-07 04:13:37,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:13:37,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:13:37,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:37,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:13:37,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:13:37,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:37" (1/1) ... [2019-11-07 04:13:37,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1cb841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:37, skipping insertion in model container [2019-11-07 04:13:37,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:37" (1/1) ... [2019-11-07 04:13:37,850 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:13:37,948 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:13:38,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:38,769 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:13:38,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:39,052 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:13:39,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39 WrapperNode [2019-11-07 04:13:39,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:39,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:13:39,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:13:39,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:13:39,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (1/1) ... [2019-11-07 04:13:39,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:13:39,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:13:39,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:13:39,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:13:39,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (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 [2019-11-07 04:13:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:13:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:13:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:13:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:13:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:13:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:13:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:13:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:13:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:13:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:13:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:13:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:13:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:13:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:13:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:13:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:13:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:13:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:13:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:13:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:13:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:13:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:13:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:13:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:13:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-11-07 04:13:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-11-07 04:13:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:13:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-11-07 04:13:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-11-07 04:13:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:13:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-11-07 04:13:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-11-07 04:13:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-11-07 04:13:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-11-07 04:13:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:13:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:13:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:13:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:13:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-11-07 04:13:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-11-07 04:13:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:13:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-11-07 04:13:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-11-07 04:13:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:13:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:13:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:13:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:13:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:13:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:13:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:13:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:13:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:13:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:13:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:13:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:13:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:13:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:13:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:13:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:13:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:13:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:13:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:13:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:13:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:13:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:13:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:13:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:13:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:13:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:13:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:13:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:13:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:13:39,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:13:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:13:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:13:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:13:39,404 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:13:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:13:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:13:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:13:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:13:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:13:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:13:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:13:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-11-07 04:13:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-11-07 04:13:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-11-07 04:13:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-11-07 04:13:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-11-07 04:13:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-11-07 04:13:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-11-07 04:13:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-11-07 04:13:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:13:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:13:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:13:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:13:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:13:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-11-07 04:13:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-11-07 04:13:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-11-07 04:13:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-11-07 04:13:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:13:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:13:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-11-07 04:13:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-11-07 04:13:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-11-07 04:13:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-11-07 04:13:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:13:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:13:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-11-07 04:13:39,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-11-07 04:13:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-11-07 04:13:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-11-07 04:13:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:13:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:13:39,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:13:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:13:44,750 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:13:44,750 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:13:44,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:44 BoogieIcfgContainer [2019-11-07 04:13:44,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:13:44,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:13:44,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:13:44,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:13:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:13:37" (1/3) ... [2019-11-07 04:13:44,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bf795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:44, skipping insertion in model container [2019-11-07 04:13:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:39" (2/3) ... [2019-11-07 04:13:44,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bf795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:44, skipping insertion in model container [2019-11-07 04:13:44,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:44" (3/3) ... [2019-11-07 04:13:44,762 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-11-07 04:13:44,772 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:13:44,783 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:13:44,795 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:13:44,825 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:13:44,826 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:13:44,826 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:13:44,826 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:13:44,826 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:13:44,826 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:13:44,826 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:13:44,826 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:13:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2019-11-07 04:13:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 04:13:44,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:44,878 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:44,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:44,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1073693299, now seen corresponding path program 1 times [2019-11-07 04:13:44,897 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:44,897 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002552394] [2019-11-07 04:13:44,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:45,662 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002552394] [2019-11-07 04:13:45,667 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:45,667 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:13:45,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347277134] [2019-11-07 04:13:45,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:13:45,676 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:13:45,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:13:45,699 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 6 states. [2019-11-07 04:13:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:45,982 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2019-11-07 04:13:45,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:13:45,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-11-07 04:13:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:46,028 INFO L225 Difference]: With dead ends: 1096 [2019-11-07 04:13:46,029 INFO L226 Difference]: Without dead ends: 553 [2019-11-07 04:13:46,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-11-07 04:13:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2019-11-07 04:13:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-11-07 04:13:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2019-11-07 04:13:46,195 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2019-11-07 04:13:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:46,202 INFO L462 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2019-11-07 04:13:46,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:13:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2019-11-07 04:13:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-07 04:13:46,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:46,219 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:46,220 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash 185107402, now seen corresponding path program 1 times [2019-11-07 04:13:46,221 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:46,223 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406598035] [2019-11-07 04:13:46,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:46,504 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406598035] [2019-11-07 04:13:46,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:46,505 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:13:46,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388071826] [2019-11-07 04:13:46,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:13:46,507 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:46,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:13:46,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:13:46,508 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand 4 states. [2019-11-07 04:13:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:47,888 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2019-11-07 04:13:47,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:13:47,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-11-07 04:13:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:47,901 INFO L225 Difference]: With dead ends: 1553 [2019-11-07 04:13:47,901 INFO L226 Difference]: Without dead ends: 1059 [2019-11-07 04:13:47,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:13:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-11-07 04:13:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2019-11-07 04:13:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-11-07 04:13:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2019-11-07 04:13:47,986 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2019-11-07 04:13:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:47,986 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2019-11-07 04:13:47,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:13:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2019-11-07 04:13:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-07 04:13:47,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:47,992 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:47,993 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash -130403046, now seen corresponding path program 1 times [2019-11-07 04:13:47,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:47,995 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93645618] [2019-11-07 04:13:47,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:48,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93645618] [2019-11-07 04:13:48,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:48,265 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:48,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462294255] [2019-11-07 04:13:48,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:48,267 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:48,268 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand 3 states. [2019-11-07 04:13:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:48,393 INFO L93 Difference]: Finished difference Result 2901 states and 4280 transitions. [2019-11-07 04:13:48,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:48,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-11-07 04:13:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:48,420 INFO L225 Difference]: With dead ends: 2901 [2019-11-07 04:13:48,420 INFO L226 Difference]: Without dead ends: 1947 [2019-11-07 04:13:48,428 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2019-11-07 04:13:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1915. [2019-11-07 04:13:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2019-11-07 04:13:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2817 transitions. [2019-11-07 04:13:48,565 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2817 transitions. Word has length 103 [2019-11-07 04:13:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:48,566 INFO L462 AbstractCegarLoop]: Abstraction has 1915 states and 2817 transitions. [2019-11-07 04:13:48,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2817 transitions. [2019-11-07 04:13:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-07 04:13:48,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:48,578 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:48,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash 251369444, now seen corresponding path program 1 times [2019-11-07 04:13:48,579 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:48,579 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500862495] [2019-11-07 04:13:48,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:48,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500862495] [2019-11-07 04:13:48,809 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:48,809 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:48,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057591707] [2019-11-07 04:13:48,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:48,810 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:48,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:48,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:48,811 INFO L87 Difference]: Start difference. First operand 1915 states and 2817 transitions. Second operand 3 states. [2019-11-07 04:13:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:48,997 INFO L93 Difference]: Finished difference Result 5508 states and 8224 transitions. [2019-11-07 04:13:48,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:48,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-11-07 04:13:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:49,033 INFO L225 Difference]: With dead ends: 5508 [2019-11-07 04:13:49,033 INFO L226 Difference]: Without dead ends: 3687 [2019-11-07 04:13:49,044 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2019-11-07 04:13:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3654. [2019-11-07 04:13:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2019-11-07 04:13:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5447 transitions. [2019-11-07 04:13:49,235 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5447 transitions. Word has length 104 [2019-11-07 04:13:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:49,235 INFO L462 AbstractCegarLoop]: Abstraction has 3654 states and 5447 transitions. [2019-11-07 04:13:49,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5447 transitions. [2019-11-07 04:13:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 04:13:49,239 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:49,239 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:49,239 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:49,239 INFO L82 PathProgramCache]: Analyzing trace with hash -798581348, now seen corresponding path program 1 times [2019-11-07 04:13:49,240 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:49,240 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258409592] [2019-11-07 04:13:49,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:49,391 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258409592] [2019-11-07 04:13:49,391 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:49,392 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:49,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830514590] [2019-11-07 04:13:49,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:49,393 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:49,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:49,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:49,393 INFO L87 Difference]: Start difference. First operand 3654 states and 5447 transitions. Second operand 3 states. [2019-11-07 04:13:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:49,753 INFO L93 Difference]: Finished difference Result 10723 states and 16193 transitions. [2019-11-07 04:13:49,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:49,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-11-07 04:13:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:49,812 INFO L225 Difference]: With dead ends: 10723 [2019-11-07 04:13:49,813 INFO L226 Difference]: Without dead ends: 7167 [2019-11-07 04:13:49,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2019-11-07 04:13:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7133. [2019-11-07 04:13:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2019-11-07 04:13:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10765 transitions. [2019-11-07 04:13:50,192 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10765 transitions. Word has length 105 [2019-11-07 04:13:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:50,194 INFO L462 AbstractCegarLoop]: Abstraction has 7133 states and 10765 transitions. [2019-11-07 04:13:50,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10765 transitions. [2019-11-07 04:13:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-07 04:13:50,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:50,197 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:50,198 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1012686374, now seen corresponding path program 1 times [2019-11-07 04:13:50,198 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:50,198 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032621320] [2019-11-07 04:13:50,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:50,352 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032621320] [2019-11-07 04:13:50,353 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:50,353 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:50,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500306144] [2019-11-07 04:13:50,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:50,354 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:50,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:50,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:50,354 INFO L87 Difference]: Start difference. First operand 7133 states and 10765 transitions. Second operand 3 states. [2019-11-07 04:13:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:50,822 INFO L93 Difference]: Finished difference Result 21154 states and 32434 transitions. [2019-11-07 04:13:50,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:50,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-11-07 04:13:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:50,938 INFO L225 Difference]: With dead ends: 21154 [2019-11-07 04:13:50,938 INFO L226 Difference]: Without dead ends: 14127 [2019-11-07 04:13:50,981 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2019-11-07 04:13:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 14092. [2019-11-07 04:13:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14092 states. [2019-11-07 04:13:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 21623 transitions. [2019-11-07 04:13:52,575 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 21623 transitions. Word has length 106 [2019-11-07 04:13:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:52,575 INFO L462 AbstractCegarLoop]: Abstraction has 14092 states and 21623 transitions. [2019-11-07 04:13:52,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 21623 transitions. [2019-11-07 04:13:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-07 04:13:52,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:52,580 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:52,580 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1327414814, now seen corresponding path program 1 times [2019-11-07 04:13:52,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:52,581 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916229377] [2019-11-07 04:13:52,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:13:52,761 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916229377] [2019-11-07 04:13:52,761 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:52,761 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:52,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546235029] [2019-11-07 04:13:52,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:52,762 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:52,763 INFO L87 Difference]: Start difference. First operand 14092 states and 21623 transitions. Second operand 3 states. [2019-11-07 04:13:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:53,118 INFO L93 Difference]: Finished difference Result 14998 states and 23064 transitions. [2019-11-07 04:13:53,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:53,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-11-07 04:13:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:53,257 INFO L225 Difference]: With dead ends: 14998 [2019-11-07 04:13:53,258 INFO L226 Difference]: Without dead ends: 14981 [2019-11-07 04:13:53,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2019-11-07 04:13:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 14951. [2019-11-07 04:13:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14951 states. [2019-11-07 04:13:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 22998 transitions. [2019-11-07 04:13:54,103 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 22998 transitions. Word has length 107 [2019-11-07 04:13:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:54,104 INFO L462 AbstractCegarLoop]: Abstraction has 14951 states and 22998 transitions. [2019-11-07 04:13:54,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 22998 transitions. [2019-11-07 04:13:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-11-07 04:13:54,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:54,116 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:54,116 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:54,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:54,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1445499494, now seen corresponding path program 1 times [2019-11-07 04:13:54,117 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:54,117 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019931764] [2019-11-07 04:13:54,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-11-07 04:13:54,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019931764] [2019-11-07 04:13:54,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254013363] [2019-11-07 04:13:54,489 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 [2019-11-07 04:13:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:55,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 4624 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:13:55,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-11-07 04:13:55,738 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:13:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-11-07 04:13:57,448 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:13:57,448 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 20 [2019-11-07 04:13:57,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38986795] [2019-11-07 04:13:57,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:13:57,450 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:57,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:13:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:13:57,451 INFO L87 Difference]: Start difference. First operand 14951 states and 22998 transitions. Second operand 9 states. [2019-11-07 04:13:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:57,973 INFO L93 Difference]: Finished difference Result 31274 states and 48710 transitions. [2019-11-07 04:13:57,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:13:57,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 312 [2019-11-07 04:13:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:58,119 INFO L225 Difference]: With dead ends: 31274 [2019-11-07 04:13:58,120 INFO L226 Difference]: Without dead ends: 16447 [2019-11-07 04:13:58,185 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 613 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:13:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16447 states. [2019-11-07 04:13:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16447 to 15291. [2019-11-07 04:13:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15291 states. [2019-11-07 04:13:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15291 states to 15291 states and 23440 transitions. [2019-11-07 04:13:59,378 INFO L78 Accepts]: Start accepts. Automaton has 15291 states and 23440 transitions. Word has length 312 [2019-11-07 04:13:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:59,379 INFO L462 AbstractCegarLoop]: Abstraction has 15291 states and 23440 transitions. [2019-11-07 04:13:59,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:13:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 15291 states and 23440 transitions. [2019-11-07 04:13:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 04:13:59,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:59,394 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:59,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:59,606 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:59,606 INFO L82 PathProgramCache]: Analyzing trace with hash 454583960, now seen corresponding path program 1 times [2019-11-07 04:13:59,606 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:59,606 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280625821] [2019-11-07 04:13:59,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 04:13:59,927 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280625821] [2019-11-07 04:13:59,927 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249793685] [2019-11-07 04:13:59,927 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 [2019-11-07 04:14:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:14:00,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 3873 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:14:00,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:14:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-11-07 04:14:00,737 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:14:00,862 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:14:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-07 04:14:01,383 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:14:01,383 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-11-07 04:14:01,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244076087] [2019-11-07 04:14:01,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:14:01,384 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:14:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:14:01,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:14:01,385 INFO L87 Difference]: Start difference. First operand 15291 states and 23440 transitions. Second operand 4 states. [2019-11-07 04:14:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:14:01,977 INFO L93 Difference]: Finished difference Result 31816 states and 50209 transitions. [2019-11-07 04:14:01,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:14:01,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2019-11-07 04:14:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:14:02,082 INFO L225 Difference]: With dead ends: 31816 [2019-11-07 04:14:02,082 INFO L226 Difference]: Without dead ends: 16617 [2019-11-07 04:14:02,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:14:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16617 states. [2019-11-07 04:14:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16617 to 16617. [2019-11-07 04:14:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16617 states. [2019-11-07 04:14:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16617 states to 16617 states and 25922 transitions. [2019-11-07 04:14:02,841 INFO L78 Accepts]: Start accepts. Automaton has 16617 states and 25922 transitions. Word has length 214 [2019-11-07 04:14:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:14:02,842 INFO L462 AbstractCegarLoop]: Abstraction has 16617 states and 25922 transitions. [2019-11-07 04:14:02,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:14:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 16617 states and 25922 transitions. [2019-11-07 04:14:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2019-11-07 04:14:03,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:14:03,614 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:14:03,823 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:14:03,823 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:14:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:14:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1687124666, now seen corresponding path program 1 times [2019-11-07 04:14:03,824 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:14:03,824 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355941995] [2019-11-07 04:14:03,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:14:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:14:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2019-11-07 04:14:04,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355941995] [2019-11-07 04:14:04,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545650385] [2019-11-07 04:14:04,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:14:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:14:05,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 4686 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:14:05,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:14:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-11-07 04:14:05,324 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:14:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2019-11-07 04:14:06,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:14:06,117 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-11-07 04:14:06,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051277939] [2019-11-07 04:14:06,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:14:06,118 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:14:06,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:14:06,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:14:06,119 INFO L87 Difference]: Start difference. First operand 16617 states and 25922 transitions. Second operand 3 states. [2019-11-07 04:14:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:14:06,948 INFO L93 Difference]: Finished difference Result 48275 states and 77556 transitions. [2019-11-07 04:14:06,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:14:06,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2019-11-07 04:14:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:14:07,147 INFO L225 Difference]: With dead ends: 48275 [2019-11-07 04:14:07,147 INFO L226 Difference]: Without dead ends: 31782 [2019-11-07 04:14:07,210 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:14:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31782 states.