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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:28,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:28,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:28,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:28,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:28,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:28,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:28,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:28,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:28,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:28,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:28,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:28,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:28,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:28,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:28,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:28,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:28,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:28,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:28,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:28,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:28,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:28,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:28,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:28,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:28,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:28,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:28,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:28,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:28,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:28,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:28,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:28,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:28,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:28,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:28,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:28,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:28,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:28,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:28,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:28,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:28,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:05:28,534 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:28,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:28,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:28,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:28,541 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:28,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:28,541 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:28,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:28,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:28,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:28,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:28,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:28,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:28,546 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:28,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:28,546 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:28,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:28,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:28,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:28,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:28,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:28,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:28,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:28,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:28,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:28,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:28,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:28,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:28,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:05:28,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:28,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:28,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:28,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:28,841 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:28,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-10-13 23:05:28,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3150ef35/162aeac1d7a242e68df7aeec8e6fd8cb/FLAG13dc6d071 [2019-10-13 23:05:29,556 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:29,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2019-10-13 23:05:29,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3150ef35/162aeac1d7a242e68df7aeec8e6fd8cb/FLAG13dc6d071 [2019-10-13 23:05:29,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3150ef35/162aeac1d7a242e68df7aeec8e6fd8cb [2019-10-13 23:05:29,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:29,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:29,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:29,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:29,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:29,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:29" (1/1) ... [2019-10-13 23:05:29,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b9ebb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:29, skipping insertion in model container [2019-10-13 23:05:29,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:29" (1/1) ... [2019-10-13 23:05:29,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:29,846 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:30,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:30,498 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:30,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:30,768 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:30,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30 WrapperNode [2019-10-13 23:05:30,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:30,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:30,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:30,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:30,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... [2019-10-13 23:05:30,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:30,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:30,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:30,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:30,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:31,054 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:31,054 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:31,055 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:31,055 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:31,055 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:35,721 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:35,721 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:35,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:35 BoogieIcfgContainer [2019-10-13 23:05:35,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:35,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:35,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:35,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:35,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:29" (1/3) ... [2019-10-13 23:05:35,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43456241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:35, skipping insertion in model container [2019-10-13 23:05:35,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:30" (2/3) ... [2019-10-13 23:05:35,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43456241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:35, skipping insertion in model container [2019-10-13 23:05:35,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:35" (3/3) ... [2019-10-13 23:05:35,732 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2019-10-13 23:05:35,744 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:35,754 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:35,768 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:35,798 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:35,798 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:35,798 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:35,799 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:35,799 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:35,799 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:35,799 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:35,799 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states. [2019-10-13 23:05:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:05:35,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:35,843 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:35,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1196104364, now seen corresponding path program 1 times [2019-10-13 23:05:35,860 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:35,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786891423] [2019-10-13 23:05:35,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:35,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:36,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786891423] [2019-10-13 23:05:36,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:36,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:36,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059452357] [2019-10-13 23:05:36,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:36,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:36,479 INFO L87 Difference]: Start difference. First operand 580 states. Second operand 2 states. [2019-10-13 23:05:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:36,580 INFO L93 Difference]: Finished difference Result 477 states and 704 transitions. [2019-10-13 23:05:36,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:36,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:05:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:36,633 INFO L225 Difference]: With dead ends: 477 [2019-10-13 23:05:36,633 INFO L226 Difference]: Without dead ends: 443 [2019-10-13 23:05:36,643 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-10-13 23:05:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2019-10-13 23:05:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-13 23:05:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 653 transitions. [2019-10-13 23:05:36,802 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 653 transitions. Word has length 74 [2019-10-13 23:05:36,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:36,805 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 653 transitions. [2019-10-13 23:05:36,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:36,805 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 653 transitions. [2019-10-13 23:05:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:05:36,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:36,819 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:36,819 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:36,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1293227544, now seen corresponding path program 1 times [2019-10-13 23:05:36,820 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:36,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001228942] [2019-10-13 23:05:36,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:36,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:37,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001228942] [2019-10-13 23:05:37,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:37,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:37,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913132840] [2019-10-13 23:05:37,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:37,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,205 INFO L87 Difference]: Start difference. First operand 443 states and 653 transitions. Second operand 3 states. [2019-10-13 23:05:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,338 INFO L93 Difference]: Finished difference Result 1220 states and 1851 transitions. [2019-10-13 23:05:37,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:37,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-13 23:05:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,351 INFO L225 Difference]: With dead ends: 1220 [2019-10-13 23:05:37,351 INFO L226 Difference]: Without dead ends: 819 [2019-10-13 23:05:37,366 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 [2019-10-13 23:05:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-10-13 23:05:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 802. [2019-10-13 23:05:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2019-10-13 23:05:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1213 transitions. [2019-10-13 23:05:37,444 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1213 transitions. Word has length 75 [2019-10-13 23:05:37,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:37,449 INFO L462 AbstractCegarLoop]: Abstraction has 802 states and 1213 transitions. [2019-10-13 23:05:37,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1213 transitions. [2019-10-13 23:05:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 23:05:37,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:37,452 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:37,452 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:37,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1434033571, now seen corresponding path program 1 times [2019-10-13 23:05:37,453 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:37,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013405416] [2019-10-13 23:05:37,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:37,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013405416] [2019-10-13 23:05:37,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:37,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:37,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747693132] [2019-10-13 23:05:37,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:37,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,611 INFO L87 Difference]: Start difference. First operand 802 states and 1213 transitions. Second operand 3 states. [2019-10-13 23:05:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:37,719 INFO L93 Difference]: Finished difference Result 2298 states and 3544 transitions. [2019-10-13 23:05:37,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:37,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-13 23:05:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:37,734 INFO L225 Difference]: With dead ends: 2298 [2019-10-13 23:05:37,734 INFO L226 Difference]: Without dead ends: 1539 [2019-10-13 23:05:37,738 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 [2019-10-13 23:05:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2019-10-13 23:05:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1521. [2019-10-13 23:05:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1521 states. [2019-10-13 23:05:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2342 transitions. [2019-10-13 23:05:37,827 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2342 transitions. Word has length 76 [2019-10-13 23:05:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:37,828 INFO L462 AbstractCegarLoop]: Abstraction has 1521 states and 2342 transitions. [2019-10-13 23:05:37,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2342 transitions. [2019-10-13 23:05:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:05:37,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:37,830 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:37,830 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:37,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1504057018, now seen corresponding path program 1 times [2019-10-13 23:05:37,831 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:37,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885661474] [2019-10-13 23:05:37,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:37,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:37,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885661474] [2019-10-13 23:05:37,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:37,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:37,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899854989] [2019-10-13 23:05:37,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:37,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:37,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:37,957 INFO L87 Difference]: Start difference. First operand 1521 states and 2342 transitions. Second operand 3 states. [2019-10-13 23:05:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:38,114 INFO L93 Difference]: Finished difference Result 4455 states and 6972 transitions. [2019-10-13 23:05:38,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:38,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-13 23:05:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:38,138 INFO L225 Difference]: With dead ends: 4455 [2019-10-13 23:05:38,138 INFO L226 Difference]: Without dead ends: 2979 [2019-10-13 23:05:38,147 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 [2019-10-13 23:05:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2019-10-13 23:05:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2960. [2019-10-13 23:05:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2960 states. [2019-10-13 23:05:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 4630 transitions. [2019-10-13 23:05:38,379 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 4630 transitions. Word has length 77 [2019-10-13 23:05:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:38,379 INFO L462 AbstractCegarLoop]: Abstraction has 2960 states and 4630 transitions. [2019-10-13 23:05:38,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 4630 transitions. [2019-10-13 23:05:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:05:38,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:38,382 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:38,383 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -620179515, now seen corresponding path program 1 times [2019-10-13 23:05:38,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:38,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109202593] [2019-10-13 23:05:38,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:38,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:38,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109202593] [2019-10-13 23:05:38,524 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:38,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:38,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329863905] [2019-10-13 23:05:38,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:38,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:38,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:38,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:38,527 INFO L87 Difference]: Start difference. First operand 2960 states and 4630 transitions. Second operand 3 states. [2019-10-13 23:05:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:38,821 INFO L93 Difference]: Finished difference Result 8770 states and 13981 transitions. [2019-10-13 23:05:38,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:38,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-10-13 23:05:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:38,873 INFO L225 Difference]: With dead ends: 8770 [2019-10-13 23:05:38,873 INFO L226 Difference]: Without dead ends: 5859 [2019-10-13 23:05:38,895 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 [2019-10-13 23:05:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2019-10-13 23:05:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 5839. [2019-10-13 23:05:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2019-10-13 23:05:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9318 transitions. [2019-10-13 23:05:39,347 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9318 transitions. Word has length 78 [2019-10-13 23:05:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:39,351 INFO L462 AbstractCegarLoop]: Abstraction has 5839 states and 9318 transitions. [2019-10-13 23:05:39,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9318 transitions. [2019-10-13 23:05:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:05:39,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:39,353 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:39,354 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2046998692, now seen corresponding path program 1 times [2019-10-13 23:05:39,354 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:39,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763560838] [2019-10-13 23:05:39,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:39,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:39,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763560838] [2019-10-13 23:05:39,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:39,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:39,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546610316] [2019-10-13 23:05:39,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:39,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:39,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:39,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:39,470 INFO L87 Difference]: Start difference. First operand 5839 states and 9318 transitions. Second operand 3 states. [2019-10-13 23:05:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:39,649 INFO L93 Difference]: Finished difference Result 6220 states and 9948 transitions. [2019-10-13 23:05:39,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:39,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2019-10-13 23:05:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:39,695 INFO L225 Difference]: With dead ends: 6220 [2019-10-13 23:05:39,695 INFO L226 Difference]: Without dead ends: 6207 [2019-10-13 23:05:39,700 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 [2019-10-13 23:05:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6207 states. [2019-10-13 23:05:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6207 to 6192. [2019-10-13 23:05:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2019-10-13 23:05:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9911 transitions. [2019-10-13 23:05:40,027 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9911 transitions. Word has length 79 [2019-10-13 23:05:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:40,028 INFO L462 AbstractCegarLoop]: Abstraction has 6192 states and 9911 transitions. [2019-10-13 23:05:40,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9911 transitions. [2019-10-13 23:05:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 23:05:40,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:40,034 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-13 23:05:40,034 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1955039642, now seen corresponding path program 1 times [2019-10-13 23:05:40,035 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:40,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447575198] [2019-10-13 23:05:40,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:40,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 23:05:40,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447575198] [2019-10-13 23:05:40,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109628033] [2019-10-13 23:05:40,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:41,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:05:41,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:05:41,951 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 23:05:42,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:42,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:05:42,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748132033] [2019-10-13 23:05:42,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:42,504 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:42,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:42,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:42,505 INFO L87 Difference]: Start difference. First operand 6192 states and 9911 transitions. Second operand 4 states. [2019-10-13 23:05:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:42,954 INFO L93 Difference]: Finished difference Result 13005 states and 21494 transitions. [2019-10-13 23:05:42,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:05:42,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-10-13 23:05:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:43,012 INFO L225 Difference]: With dead ends: 13005 [2019-10-13 23:05:43,012 INFO L226 Difference]: Without dead ends: 6855 [2019-10-13 23:05:43,045 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:05:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2019-10-13 23:05:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6855. [2019-10-13 23:05:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6855 states. [2019-10-13 23:05:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6855 states to 6855 states and 11152 transitions. [2019-10-13 23:05:43,524 INFO L78 Accepts]: Start accepts. Automaton has 6855 states and 11152 transitions. Word has length 191 [2019-10-13 23:05:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:43,525 INFO L462 AbstractCegarLoop]: Abstraction has 6855 states and 11152 transitions. [2019-10-13 23:05:43,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states and 11152 transitions. [2019-10-13 23:05:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 23:05:43,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:43,533 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 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] [2019-10-13 23:05:43,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:43,748 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:43,749 INFO L82 PathProgramCache]: Analyzing trace with hash 677003589, now seen corresponding path program 1 times [2019-10-13 23:05:43,750 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:43,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097937524] [2019-10-13 23:05:43,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:43,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:43,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 23:05:44,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097937524] [2019-10-13 23:05:44,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949196542] [2019-10-13 23:05:44,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:44,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:05:44,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-13 23:05:45,206 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:45,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:45,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:45,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:45,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-10-13 23:05:45,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385379932] [2019-10-13 23:05:45,937 INFO L162 IcfgInterpreter]: Started Sifa with 184 locations of interest [2019-10-13 23:05:45,937 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:05:45,945 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:05:45,953 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:05:45,953 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs