/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_spec1_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:08:12,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:08:12,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:08:12,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:08:12,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:08:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:08:12,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:08:12,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:08:12,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:08:12,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:08:12,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:08:12,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:08:12,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:08:12,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:08:12,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:08:12,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:08:12,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:08:12,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:08:12,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:08:12,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:08:12,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:08:12,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:08:12,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:08:12,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:08:12,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:08:12,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:08:12,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:08:12,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:08:12,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:08:12,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:08:12,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:08:12,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:08:12,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:08:12,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:08:12,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:08:12,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:08:12,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:08:12,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:08:12,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:08:12,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:08:12,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:08:12,399 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 04:08:12,422 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:08:12,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:08:12,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:08:12,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:08:12,426 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:08:12,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:08:12,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:08:12,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:08:12,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:08:12,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:08:12,429 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:08:12,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:08:12,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:08:12,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:08:12,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:08:12,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:08:12,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:12,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:08:12,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:08:12,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:08:12,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:08:12,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:08:12,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:08:12,431 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 04:08:12,697 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:08:12,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:08:12,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:08:12,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:08:12,720 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:08:12,720 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-11-07 04:08:12,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e5b79093/6a30c803534a43dab1b0817e8ef2499c/FLAGaa3aa483d [2019-11-07 04:08:13,430 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:08:13,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-11-07 04:08:13,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e5b79093/6a30c803534a43dab1b0817e8ef2499c/FLAGaa3aa483d [2019-11-07 04:08:13,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e5b79093/6a30c803534a43dab1b0817e8ef2499c [2019-11-07 04:08:13,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:08:13,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:08:13,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:13,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:08:13,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:08:13,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:13" (1/1) ... [2019-11-07 04:08:13,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745d7f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:13, skipping insertion in model container [2019-11-07 04:08:13,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:13" (1/1) ... [2019-11-07 04:08:13,681 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:08:13,747 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:08:14,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:14,470 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:08:14,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:14,711 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:08:14,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14 WrapperNode [2019-11-07 04:08:14,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:14,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:08:14,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:08:14,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:08:14,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:08:14,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:08:14,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:08:14,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:08:14,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (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 04:08:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:08:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:08:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:08:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:08:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:08:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:08:14,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:08:14,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:08:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:08:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:08:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:08:14,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:08:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:08:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:08:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:08:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:08:14,993 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:08:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:08:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:08:14,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:08:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:08:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:08:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:08:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:08:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:08:14,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:08:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:08:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:08:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:08:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:08:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:08:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:08:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:08:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:08:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:08:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:08:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:08:15,001 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:08:15,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:08:15,001 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:08:15,001 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:08:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:08:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:08:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:08:15,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:08:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:08:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:08:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:08:15,003 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:08:15,004 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:08:15,005 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:08:15,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:08:15,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:08:15,005 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:08:15,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:08:15,006 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:08:15,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:08:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:08:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:08:15,006 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:08:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:08:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:08:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:08:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:08:15,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:08:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:08:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:08:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:08:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:08:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:08:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:08:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:08:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:08:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:08:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:08:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:08:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:08:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:08:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:08:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:08:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:08:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:08:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:08:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:08:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:08:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:08:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:08:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:08:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:08:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:08:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:08:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:08:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:08:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:08:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:08:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:08:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:08:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:08:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:08:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:08:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:08:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:08:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:08:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:08:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:08:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:08:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:08:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:08:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:08:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:08:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:08:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:08:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:08:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:08:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:08:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:08:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:08:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:08:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:08:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:08:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:08:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:08:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:08:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:08:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:08:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:08:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:08:20,120 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:08:20,120 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:08:20,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:20 BoogieIcfgContainer [2019-11-07 04:08:20,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:08:20,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:08:20,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:08:20,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:08:20,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:13" (1/3) ... [2019-11-07 04:08:20,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5b214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:20, skipping insertion in model container [2019-11-07 04:08:20,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14" (2/3) ... [2019-11-07 04:08:20,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5b214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:20, skipping insertion in model container [2019-11-07 04:08:20,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:20" (3/3) ... [2019-11-07 04:08:20,132 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2019-11-07 04:08:20,143 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:08:20,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:08:20,165 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:08:20,210 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:08:20,210 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:08:20,210 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:08:20,211 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:08:20,211 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:08:20,211 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:08:20,211 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:08:20,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:08:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-11-07 04:08:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 04:08:20,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:20,266 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:08:20,268 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:20,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:20,274 INFO L82 PathProgramCache]: Analyzing trace with hash 314312242, now seen corresponding path program 1 times [2019-11-07 04:08:20,284 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:20,284 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893756146] [2019-11-07 04:08:20,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:08:21,015 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893756146] [2019-11-07 04:08:21,016 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:21,016 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:08:21,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398752382] [2019-11-07 04:08:21,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:08:21,026 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:08:21,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:08:21,045 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-11-07 04:08:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:21,153 INFO L93 Difference]: Finished difference Result 467 states and 699 transitions. [2019-11-07 04:08:21,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:08:21,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 135 [2019-11-07 04:08:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:21,177 INFO L225 Difference]: With dead ends: 467 [2019-11-07 04:08:21,177 INFO L226 Difference]: Without dead ends: 433 [2019-11-07 04:08:21,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:08:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-11-07 04:08:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-11-07 04:08:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-11-07 04:08:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 648 transitions. [2019-11-07 04:08:21,284 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 648 transitions. Word has length 135 [2019-11-07 04:08:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:21,287 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 648 transitions. [2019-11-07 04:08:21,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:08:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 648 transitions. [2019-11-07 04:08:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:08:21,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:21,294 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:08:21,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:21,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1290537219, now seen corresponding path program 1 times [2019-11-07 04:08:21,295 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:21,295 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585457670] [2019-11-07 04:08:21,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:08:21,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585457670] [2019-11-07 04:08:21,859 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:21,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:21,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607408745] [2019-11-07 04:08:21,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:21,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:21,863 INFO L87 Difference]: Start difference. First operand 433 states and 648 transitions. Second operand 7 states. [2019-11-07 04:08:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:25,663 INFO L93 Difference]: Finished difference Result 1204 states and 1855 transitions. [2019-11-07 04:08:25,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:08:25,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-11-07 04:08:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:25,674 INFO L225 Difference]: With dead ends: 1204 [2019-11-07 04:08:25,674 INFO L226 Difference]: Without dead ends: 824 [2019-11-07 04:08:25,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:08:25,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2019-11-07 04:08:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 799. [2019-11-07 04:08:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2019-11-07 04:08:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1226 transitions. [2019-11-07 04:08:25,761 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1226 transitions. Word has length 136 [2019-11-07 04:08:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:25,762 INFO L462 AbstractCegarLoop]: Abstraction has 799 states and 1226 transitions. [2019-11-07 04:08:25,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1226 transitions. [2019-11-07 04:08:25,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:08:25,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:25,767 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:08:25,767 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:25,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash -153028224, now seen corresponding path program 1 times [2019-11-07 04:08:25,768 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:25,768 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344548555] [2019-11-07 04:08:25,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:08:26,038 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344548555] [2019-11-07 04:08:26,038 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:26,038 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:08:26,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378214291] [2019-11-07 04:08:26,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:08:26,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:26,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:08:26,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:08:26,040 INFO L87 Difference]: Start difference. First operand 799 states and 1226 transitions. Second operand 6 states. [2019-11-07 04:08:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:26,764 INFO L93 Difference]: Finished difference Result 838 states and 1282 transitions. [2019-11-07 04:08:26,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:08:26,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-11-07 04:08:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:26,777 INFO L225 Difference]: With dead ends: 838 [2019-11-07 04:08:26,777 INFO L226 Difference]: Without dead ends: 821 [2019-11-07 04:08:26,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2019-11-07 04:08:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 803. [2019-11-07 04:08:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-11-07 04:08:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1230 transitions. [2019-11-07 04:08:26,870 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1230 transitions. Word has length 140 [2019-11-07 04:08:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:26,873 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1230 transitions. [2019-11-07 04:08:26,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:08:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1230 transitions. [2019-11-07 04:08:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 04:08:26,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:26,884 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:08:26,884 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:26,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:26,885 INFO L82 PathProgramCache]: Analyzing trace with hash -918915006, now seen corresponding path program 1 times [2019-11-07 04:08:26,885 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:26,885 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747760325] [2019-11-07 04:08:26,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:08:27,156 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747760325] [2019-11-07 04:08:27,156 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:27,157 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:08:27,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7464266] [2019-11-07 04:08:27,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:08:27,158 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:27,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:08:27,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:27,159 INFO L87 Difference]: Start difference. First operand 803 states and 1230 transitions. Second operand 8 states. [2019-11-07 04:08:27,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:27,236 INFO L93 Difference]: Finished difference Result 824 states and 1256 transitions. [2019-11-07 04:08:27,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:08:27,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2019-11-07 04:08:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:27,244 INFO L225 Difference]: With dead ends: 824 [2019-11-07 04:08:27,244 INFO L226 Difference]: Without dead ends: 807 [2019-11-07 04:08:27,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:08:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2019-11-07 04:08:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2019-11-07 04:08:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-11-07 04:08:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1228 transitions. [2019-11-07 04:08:27,293 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1228 transitions. Word has length 145 [2019-11-07 04:08:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:27,293 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1228 transitions. [2019-11-07 04:08:27,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:08:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1228 transitions. [2019-11-07 04:08:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 04:08:27,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:27,298 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-07 04:08:27,298 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 117301949, now seen corresponding path program 1 times [2019-11-07 04:08:27,299 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:27,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349012763] [2019-11-07 04:08:27,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:08:28,541 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349012763] [2019-11-07 04:08:28,542 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55692967] [2019-11-07 04:08:28,542 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 04:08:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:29,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-07 04:08:29,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:08:29,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:08:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 04:08:29,521 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:08:29,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:08:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 04:08:30,187 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:08:30,187 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-11-07 04:08:30,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60357913] [2019-11-07 04:08:30,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:30,189 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:30,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:30,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 04:08:30,190 INFO L87 Difference]: Start difference. First operand 803 states and 1228 transitions. Second operand 7 states. [2019-11-07 04:08:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:30,289 INFO L93 Difference]: Finished difference Result 846 states and 1282 transitions. [2019-11-07 04:08:30,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:30,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-11-07 04:08:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:30,306 INFO L225 Difference]: With dead ends: 846 [2019-11-07 04:08:30,307 INFO L226 Difference]: Without dead ends: 829 [2019-11-07 04:08:30,309 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 04:08:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2019-11-07 04:08:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2019-11-07 04:08:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2019-11-07 04:08:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1240 transitions. [2019-11-07 04:08:30,365 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1240 transitions. Word has length 160 [2019-11-07 04:08:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:30,368 INFO L462 AbstractCegarLoop]: Abstraction has 815 states and 1240 transitions. [2019-11-07 04:08:30,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1240 transitions. [2019-11-07 04:08:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 04:08:30,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:30,377 INFO L410 BasicCegarLoop]: trace histogram [7, 3, 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] [2019-11-07 04:08:30,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:08:30,588 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1951000831, now seen corresponding path program 1 times [2019-11-07 04:08:30,589 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:30,590 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981731873] [2019-11-07 04:08:30,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:08:31,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981731873] [2019-11-07 04:08:31,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898750749] [2019-11-07 04:08:31,079 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 04:08:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:31,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 114 conjunts are in the unsatisfiable core [2019-11-07 04:08:31,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:08:32,000 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-11-07 04:08:32,678 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-11-07 04:08:33,071 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-11-07 04:08:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-07 04:08:33,299 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:08:33,491 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-07 04:08:33,816 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 12 [2019-11-07 04:08:34,032 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 54