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 0.1.24-13a467a-m [2019-10-15 03:10:25,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:10:25,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:10:25,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:10:25,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:10:25,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:10:25,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:10:25,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:10:25,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:10:25,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:10:25,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:10:25,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:10:25,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:10:25,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:10:25,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:10:25,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:10:25,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:10:25,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:10:25,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:10:25,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:10:25,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:10:25,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:10:25,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:10:25,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:10:25,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:10:25,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:10:25,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:10:25,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:10:25,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:10:25,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:10:25,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:10:25,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:10:25,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:10:25,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:10:25,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:10:25,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:10:25,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:10:25,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:10:25,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:10:25,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:10:25,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:10:25,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:10:25,427 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:10:25,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:10:25,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:10:25,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:10:25,430 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:10:25,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:10:25,433 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:10:25,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:10:25,434 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:10:25,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:10:25,435 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:10:25,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:10:25,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:10:25,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:10:25,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:10:25,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:10:25,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:10:25,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:10:25,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:10:25,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:10:25,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:10:25,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:10:25,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:10:25,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:10:26,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:10:26,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:10:26,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:10:26,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:10:26,115 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:10:26,116 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-15 03:10:26,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8118d03/528243c031dd40028d75d5934a37ab1b/FLAG652d47d6d [2019-10-15 03:10:27,286 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:10:27,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-15 03:10:27,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8118d03/528243c031dd40028d75d5934a37ab1b/FLAG652d47d6d [2019-10-15 03:10:27,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8118d03/528243c031dd40028d75d5934a37ab1b [2019-10-15 03:10:27,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:10:27,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:10:27,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:27,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:10:27,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:10:27,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:27" (1/1) ... [2019-10-15 03:10:27,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10977f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:27, skipping insertion in model container [2019-10-15 03:10:27,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:10:27" (1/1) ... [2019-10-15 03:10:27,415 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:10:27,587 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:10:28,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:28,734 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:10:29,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:10:29,132 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:10:29,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29 WrapperNode [2019-10-15 03:10:29,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:10:29,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:10:29,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:10:29,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:10:29,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... [2019-10-15 03:10:29,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:10:29,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:10:29,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:10:29,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:10:29,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:10:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:10:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:10:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:10:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:10:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:10:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:10:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:10:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:10:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:10:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:10:29,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:10:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:10:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:10:29,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:10:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:10:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:10:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:10:29,651 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:10:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:10:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:10:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:10:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:10:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:10:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:10:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:10:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:10:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:10:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:10:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:10:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-15 03:10:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:10:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-15 03:10:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-15 03:10:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:10:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-15 03:10:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-15 03:10:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-15 03:10:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-15 03:10:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:10:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:10:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:10:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:10:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:10:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:10:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:10:29,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:10:29,669 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:10:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:10:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 03:10:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 03:10:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 03:10:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 03:10:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:10:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:10:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:10:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 03:10:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 03:10:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 03:10:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 03:10:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:10:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:10:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:10:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:10:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:10:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:10:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:10:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:10:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:10:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:10:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:10:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:10:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:10:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:10:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:10:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:10:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 03:10:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 03:10:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:10:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:10:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:10:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:10:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:10:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:10:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:10:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:10:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:10:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:10:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:10:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:10:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:10:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:10:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:10:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:10:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:10:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:10:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:10:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:10:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:10:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:10:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:10:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:10:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:10:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:10:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:10:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:10:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:10:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:10:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:10:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:10:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:10:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:10:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:10:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:10:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:10:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:10:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-15 03:10:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-15 03:10:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-15 03:10:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-15 03:10:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-15 03:10:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-15 03:10:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-15 03:10:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-15 03:10:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:10:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:10:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:10:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:10:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:10:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 03:10:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 03:10:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 03:10:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 03:10:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:10:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:10:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 03:10:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 03:10:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 03:10:29,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 03:10:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:10:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:10:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:10:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-15 03:10:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-15 03:10:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-15 03:10:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-15 03:10:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:10:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:10:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:10:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:10:38,014 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:10:38,014 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:10:38,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:38 BoogieIcfgContainer [2019-10-15 03:10:38,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:10:38,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:10:38,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:10:38,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:10:38,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:10:27" (1/3) ... [2019-10-15 03:10:38,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139db0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:38, skipping insertion in model container [2019-10-15 03:10:38,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:10:29" (2/3) ... [2019-10-15 03:10:38,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139db0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:10:38, skipping insertion in model container [2019-10-15 03:10:38,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:10:38" (3/3) ... [2019-10-15 03:10:38,025 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-10-15 03:10:38,035 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:10:38,063 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:10:38,075 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:10:38,110 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:10:38,110 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:10:38,110 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:10:38,111 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:10:38,111 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:10:38,111 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:10:38,111 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:10:38,111 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:10:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2019-10-15 03:10:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:10:38,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:38,164 INFO L380 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] [2019-10-15 03:10:38,166 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:38,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1073693299, now seen corresponding path program 1 times [2019-10-15 03:10:38,182 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:38,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261299501] [2019-10-15 03:10:38,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:38,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:38,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:38,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261299501] [2019-10-15 03:10:38,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:38,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:10:38,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007603962] [2019-10-15 03:10:38,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:10:38,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:10:38,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:10:38,871 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 6 states. [2019-10-15 03:10:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:39,085 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2019-10-15 03:10:39,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:10:39,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-15 03:10:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:39,112 INFO L225 Difference]: With dead ends: 1096 [2019-10-15 03:10:39,113 INFO L226 Difference]: Without dead ends: 553 [2019-10-15 03:10:39,126 INFO L600 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 [2019-10-15 03:10:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-15 03:10:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2019-10-15 03:10:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-10-15 03:10:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2019-10-15 03:10:39,245 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2019-10-15 03:10:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:39,248 INFO L462 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2019-10-15 03:10:39,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:10:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2019-10-15 03:10:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 03:10:39,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:39,256 INFO L380 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] [2019-10-15 03:10:39,257 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash 185107402, now seen corresponding path program 1 times [2019-10-15 03:10:39,258 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:39,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632405505] [2019-10-15 03:10:39,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:39,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:39,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:39,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632405505] [2019-10-15 03:10:39,722 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:39,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:10:39,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118215539] [2019-10-15 03:10:39,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:10:39,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:39,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:10:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:10:39,730 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand 4 states. [2019-10-15 03:10:41,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:41,146 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2019-10-15 03:10:41,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:10:41,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-10-15 03:10:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:41,160 INFO L225 Difference]: With dead ends: 1553 [2019-10-15 03:10:41,160 INFO L226 Difference]: Without dead ends: 1059 [2019-10-15 03:10:41,165 INFO L600 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 [2019-10-15 03:10:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-15 03:10:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2019-10-15 03:10:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-15 03:10:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2019-10-15 03:10:41,257 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2019-10-15 03:10:41,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:41,258 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2019-10-15 03:10:41,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:10:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2019-10-15 03:10:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 03:10:41,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:41,265 INFO L380 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] [2019-10-15 03:10:41,265 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash -130403046, now seen corresponding path program 1 times [2019-10-15 03:10:41,266 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:41,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999948712] [2019-10-15 03:10:41,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:41,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:41,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:41,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999948712] [2019-10-15 03:10:41,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:41,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:41,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707195503] [2019-10-15 03:10:41,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:41,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:41,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:41,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:41,546 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand 3 states. [2019-10-15 03:10:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:41,698 INFO L93 Difference]: Finished difference Result 2901 states and 4280 transitions. [2019-10-15 03:10:41,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:41,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-10-15 03:10:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:41,726 INFO L225 Difference]: With dead ends: 2901 [2019-10-15 03:10:41,726 INFO L226 Difference]: Without dead ends: 1947 [2019-10-15 03:10:41,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2019-10-15 03:10:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1915. [2019-10-15 03:10:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2019-10-15 03:10:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2817 transitions. [2019-10-15 03:10:41,908 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2817 transitions. Word has length 103 [2019-10-15 03:10:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:41,909 INFO L462 AbstractCegarLoop]: Abstraction has 1915 states and 2817 transitions. [2019-10-15 03:10:41,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2817 transitions. [2019-10-15 03:10:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-15 03:10:41,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:41,920 INFO L380 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] [2019-10-15 03:10:41,921 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash 251369444, now seen corresponding path program 1 times [2019-10-15 03:10:41,922 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:41,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280646927] [2019-10-15 03:10:41,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:41,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:41,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:42,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280646927] [2019-10-15 03:10:42,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:42,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:42,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172856208] [2019-10-15 03:10:42,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:42,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:42,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:42,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:42,186 INFO L87 Difference]: Start difference. First operand 1915 states and 2817 transitions. Second operand 3 states. [2019-10-15 03:10:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:42,400 INFO L93 Difference]: Finished difference Result 5508 states and 8224 transitions. [2019-10-15 03:10:42,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:42,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-15 03:10:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:42,437 INFO L225 Difference]: With dead ends: 5508 [2019-10-15 03:10:42,437 INFO L226 Difference]: Without dead ends: 3687 [2019-10-15 03:10:42,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:42,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2019-10-15 03:10:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3654. [2019-10-15 03:10:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2019-10-15 03:10:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5447 transitions. [2019-10-15 03:10:42,721 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5447 transitions. Word has length 104 [2019-10-15 03:10:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:42,721 INFO L462 AbstractCegarLoop]: Abstraction has 3654 states and 5447 transitions. [2019-10-15 03:10:42,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5447 transitions. [2019-10-15 03:10:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 03:10:42,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:42,727 INFO L380 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] [2019-10-15 03:10:42,728 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash -798581348, now seen corresponding path program 1 times [2019-10-15 03:10:42,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:42,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463573967] [2019-10-15 03:10:42,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:42,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:42,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:42,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463573967] [2019-10-15 03:10:42,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:42,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:42,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126172275] [2019-10-15 03:10:42,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:42,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:42,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:42,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:42,954 INFO L87 Difference]: Start difference. First operand 3654 states and 5447 transitions. Second operand 3 states. [2019-10-15 03:10:43,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:43,297 INFO L93 Difference]: Finished difference Result 10723 states and 16193 transitions. [2019-10-15 03:10:43,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:43,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-15 03:10:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:43,369 INFO L225 Difference]: With dead ends: 10723 [2019-10-15 03:10:43,369 INFO L226 Difference]: Without dead ends: 7167 [2019-10-15 03:10:43,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2019-10-15 03:10:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7133. [2019-10-15 03:10:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2019-10-15 03:10:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10765 transitions. [2019-10-15 03:10:44,149 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10765 transitions. Word has length 105 [2019-10-15 03:10:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:44,151 INFO L462 AbstractCegarLoop]: Abstraction has 7133 states and 10765 transitions. [2019-10-15 03:10:44,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10765 transitions. [2019-10-15 03:10:44,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-15 03:10:44,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:44,157 INFO L380 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] [2019-10-15 03:10:44,157 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:44,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1012686374, now seen corresponding path program 1 times [2019-10-15 03:10:44,158 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:44,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864413206] [2019-10-15 03:10:44,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:44,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:44,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:44,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864413206] [2019-10-15 03:10:44,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:44,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:44,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630872137] [2019-10-15 03:10:44,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:44,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:44,368 INFO L87 Difference]: Start difference. First operand 7133 states and 10765 transitions. Second operand 3 states. [2019-10-15 03:10:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:45,024 INFO L93 Difference]: Finished difference Result 21154 states and 32434 transitions. [2019-10-15 03:10:45,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:45,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-15 03:10:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:45,194 INFO L225 Difference]: With dead ends: 21154 [2019-10-15 03:10:45,195 INFO L226 Difference]: Without dead ends: 14127 [2019-10-15 03:10:45,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2019-10-15 03:10:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 14092. [2019-10-15 03:10:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14092 states. [2019-10-15 03:10:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 21623 transitions. [2019-10-15 03:10:46,764 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 21623 transitions. Word has length 106 [2019-10-15 03:10:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:46,764 INFO L462 AbstractCegarLoop]: Abstraction has 14092 states and 21623 transitions. [2019-10-15 03:10:46,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 21623 transitions. [2019-10-15 03:10:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 03:10:46,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:46,768 INFO L380 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] [2019-10-15 03:10:46,768 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1327414814, now seen corresponding path program 1 times [2019-10-15 03:10:46,769 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:46,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409563890] [2019-10-15 03:10:46,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:46,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:46,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:10:46,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409563890] [2019-10-15 03:10:46,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:10:46,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:10:46,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446333667] [2019-10-15 03:10:46,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:46,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:46,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:46,927 INFO L87 Difference]: Start difference. First operand 14092 states and 21623 transitions. Second operand 3 states. [2019-10-15 03:10:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:47,523 INFO L93 Difference]: Finished difference Result 14998 states and 23064 transitions. [2019-10-15 03:10:47,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:47,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-15 03:10:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:47,628 INFO L225 Difference]: With dead ends: 14998 [2019-10-15 03:10:47,628 INFO L226 Difference]: Without dead ends: 14981 [2019-10-15 03:10:47,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:10:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2019-10-15 03:10:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 14951. [2019-10-15 03:10:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14951 states. [2019-10-15 03:10:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 22998 transitions. [2019-10-15 03:10:48,349 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 22998 transitions. Word has length 107 [2019-10-15 03:10:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:48,351 INFO L462 AbstractCegarLoop]: Abstraction has 14951 states and 22998 transitions. [2019-10-15 03:10:48,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:10:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 22998 transitions. [2019-10-15 03:10:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-15 03:10:48,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:48,364 INFO L380 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] [2019-10-15 03:10:48,364 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1445499494, now seen corresponding path program 1 times [2019-10-15 03:10:48,365 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:48,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574390059] [2019-10-15 03:10:48,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:48,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:48,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-10-15 03:10:48,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574390059] [2019-10-15 03:10:48,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775443034] [2019-10-15 03:10:48,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:49,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 4624 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:10:49,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-15 03:10:50,761 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-10-15 03:10:52,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:52,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 20 [2019-10-15 03:10:52,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385061494] [2019-10-15 03:10:52,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:10:52,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:52,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:10:52,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:10:52,416 INFO L87 Difference]: Start difference. First operand 14951 states and 22998 transitions. Second operand 9 states. [2019-10-15 03:10:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:53,061 INFO L93 Difference]: Finished difference Result 31274 states and 48710 transitions. [2019-10-15 03:10:53,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:10:53,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 312 [2019-10-15 03:10:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:53,204 INFO L225 Difference]: With dead ends: 31274 [2019-10-15 03:10:53,205 INFO L226 Difference]: Without dead ends: 16447 [2019-10-15 03:10:53,284 INFO L600 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 [2019-10-15 03:10:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16447 states. [2019-10-15 03:10:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16447 to 15291. [2019-10-15 03:10:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15291 states. [2019-10-15 03:10:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15291 states to 15291 states and 23440 transitions. [2019-10-15 03:10:54,200 INFO L78 Accepts]: Start accepts. Automaton has 15291 states and 23440 transitions. Word has length 312 [2019-10-15 03:10:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:10:54,202 INFO L462 AbstractCegarLoop]: Abstraction has 15291 states and 23440 transitions. [2019-10-15 03:10:54,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:10:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15291 states and 23440 transitions. [2019-10-15 03:10:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-15 03:10:54,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:10:54,217 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:10:54,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:54,430 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:10:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:10:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2072090242, now seen corresponding path program 1 times [2019-10-15 03:10:54,432 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:10:54,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514999528] [2019-10-15 03:10:54,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:54,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:10:54,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:10:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-15 03:10:54,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514999528] [2019-10-15 03:10:54,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969105119] [2019-10-15 03:10:54,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:10:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:10:55,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 4634 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:10:55,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:10:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-15 03:10:56,018 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:10:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-15 03:10:56,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:10:56,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-15 03:10:56,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520069353] [2019-10-15 03:10:56,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:10:56,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:10:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:10:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:10:56,789 INFO L87 Difference]: Start difference. First operand 15291 states and 23440 transitions. Second operand 3 states. [2019-10-15 03:10:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:10:57,569 INFO L93 Difference]: Finished difference Result 44297 states and 70110 transitions. [2019-10-15 03:10:57,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:10:57,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2019-10-15 03:10:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:10:57,767 INFO L225 Difference]: With dead ends: 44297 [2019-10-15 03:10:57,767 INFO L226 Difference]: Without dead ends: 29130 [2019-10-15 03:10:57,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:10:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29130 states.