java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:36:23,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:36:23,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:36:23,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:36:23,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:36:23,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:36:23,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:36:23,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:36:23,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:36:23,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:36:23,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:36:23,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:36:23,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:36:23,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:36:23,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:36:23,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:36:23,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:36:23,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:36:23,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:36:23,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:36:23,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:36:23,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:36:23,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:36:23,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:36:23,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:36:23,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:36:23,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:36:23,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:36:23,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:36:23,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:36:23,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:36:23,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:36:23,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:36:23,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:36:23,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:36:23,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:36:23,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:36:23,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:36:23,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:36:23,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:36:23,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:36:23,093 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 [2019-10-07 14:36:23,130 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:36:23,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:36:23,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:36:23,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:36:23,135 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:36:23,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:36:23,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:36:23,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:36:23,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:36:23,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:36:23,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:36:23,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:36:23,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:36:23,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:36:23,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:36:23,138 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:36:23,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:36:23,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:36:23,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:36:23,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:36:23,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:36:23,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:36:23,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:36:23,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:36:23,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:36:23,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:36:23,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:36:23,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:36:23,142 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 [2019-10-07 14:36:23,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:36:23,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:36:23,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:36:23,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:36:23,462 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:36:23,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-07 14:36:23,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425e50207/1f251a919a9f4763b11e535b2b8bb39c/FLAG150e753f4 [2019-10-07 14:36:24,165 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:36:24,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_productSimulator.cil.c [2019-10-07 14:36:24,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425e50207/1f251a919a9f4763b11e535b2b8bb39c/FLAG150e753f4 [2019-10-07 14:36:24,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425e50207/1f251a919a9f4763b11e535b2b8bb39c [2019-10-07 14:36:24,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:36:24,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:36:24,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:36:24,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:36:24,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:36:24,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:36:24" (1/1) ... [2019-10-07 14:36:24,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388d384c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:24, skipping insertion in model container [2019-10-07 14:36:24,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:36:24" (1/1) ... [2019-10-07 14:36:24,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:36:24,501 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:36:25,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:36:25,278 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:36:25,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:36:25,580 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:36:25,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25 WrapperNode [2019-10-07 14:36:25,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:36:25,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:36:25,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:36:25,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:36:25,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (1/1) ... [2019-10-07 14:36:25,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:36:25,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:36:25,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:36:25,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:36:25,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (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 [2019-10-07 14:36:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:36:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:36:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:36:25,930 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:36:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:36:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:36:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:36:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:36:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:36:25,932 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:36:25,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:36:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:36:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:36:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:36:25,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:36:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:36:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:36:25,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:36:25,938 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:36:25,939 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:36:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:36:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:36:25,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:36:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:36:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:36:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-07 14:36:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:36:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:36:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:36:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:36:25,948 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:36:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-07 14:36:25,950 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:36:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:36:25,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:36:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:36:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:36:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:36:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:36:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:36:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:36:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:36:25,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:36:25,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:36:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:36:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:36:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:36:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:36:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:36:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:36:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:36:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:36:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:36:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:36:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:36:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:36:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:36:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:36:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:36:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:36:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:36:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-07 14:36:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:36:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:36:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:36:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-07 14:36:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:36:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:36:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:36:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:36:30,933 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:36:30,934 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:36:30,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:36:30 BoogieIcfgContainer [2019-10-07 14:36:30,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:36:30,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:36:30,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:36:30,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:36:30,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:36:24" (1/3) ... [2019-10-07 14:36:30,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e88319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:36:30, skipping insertion in model container [2019-10-07 14:36:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:36:25" (2/3) ... [2019-10-07 14:36:30,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e88319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:36:30, skipping insertion in model container [2019-10-07 14:36:30,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:36:30" (3/3) ... [2019-10-07 14:36:30,944 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2019-10-07 14:36:30,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:36:30,968 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:36:30,982 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:36:31,037 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:36:31,037 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:36:31,037 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:36:31,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:36:31,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:36:31,038 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:36:31,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:36:31,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:36:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states. [2019-10-07 14:36:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-07 14:36:31,119 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:31,120 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:31,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1073693299, now seen corresponding path program 1 times [2019-10-07 14:36:31,139 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:31,139 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:31,140 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:31,140 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:31,809 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:31,810 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:31,810 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:36:31,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:36:31,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:36:31,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:36:31,834 INFO L87 Difference]: Start difference. First operand 695 states. Second operand 6 states. [2019-10-07 14:36:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:32,059 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2019-10-07 14:36:32,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:36:32,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-07 14:36:32,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:32,101 INFO L225 Difference]: With dead ends: 1096 [2019-10-07 14:36:32,101 INFO L226 Difference]: Without dead ends: 553 [2019-10-07 14:36:32,115 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:36:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-07 14:36:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2019-10-07 14:36:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-10-07 14:36:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2019-10-07 14:36:32,228 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2019-10-07 14:36:32,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:32,230 INFO L462 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2019-10-07 14:36:32,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:36:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2019-10-07 14:36:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-07 14:36:32,236 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:32,237 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:32,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:32,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:32,238 INFO L82 PathProgramCache]: Analyzing trace with hash 185107402, now seen corresponding path program 1 times [2019-10-07 14:36:32,238 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:32,238 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:32,238 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:32,238 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:32,527 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:32,527 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:32,528 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:36:32,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:36:32,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:36:32,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:36:32,534 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand 4 states. [2019-10-07 14:36:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:33,841 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2019-10-07 14:36:33,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:36:33,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-10-07 14:36:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:33,851 INFO L225 Difference]: With dead ends: 1553 [2019-10-07 14:36:33,852 INFO L226 Difference]: Without dead ends: 1059 [2019-10-07 14:36:33,856 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:36:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-07 14:36:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2019-10-07 14:36:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-07 14:36:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2019-10-07 14:36:33,951 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2019-10-07 14:36:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:33,952 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2019-10-07 14:36:33,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:36:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2019-10-07 14:36:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:36:33,957 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:33,958 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:33,958 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash -130403046, now seen corresponding path program 1 times [2019-10-07 14:36:33,959 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:33,959 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:33,959 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:33,959 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:34,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:34,169 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:34,169 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:36:34,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:34,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:36:34,171 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand 3 states. [2019-10-07 14:36:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:34,310 INFO L93 Difference]: Finished difference Result 2901 states and 4280 transitions. [2019-10-07 14:36:34,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:34,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-10-07 14:36:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:34,332 INFO L225 Difference]: With dead ends: 2901 [2019-10-07 14:36:34,333 INFO L226 Difference]: Without dead ends: 1947 [2019-10-07 14:36:34,339 INFO L606 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 [2019-10-07 14:36:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2019-10-07 14:36:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1915. [2019-10-07 14:36:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2019-10-07 14:36:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2817 transitions. [2019-10-07 14:36:34,556 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2817 transitions. Word has length 103 [2019-10-07 14:36:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:34,557 INFO L462 AbstractCegarLoop]: Abstraction has 1915 states and 2817 transitions. [2019-10-07 14:36:34,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2817 transitions. [2019-10-07 14:36:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 14:36:34,569 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:34,570 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:34,570 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 251369444, now seen corresponding path program 1 times [2019-10-07 14:36:34,571 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:34,571 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:34,571 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:34,571 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:34,857 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:34,857 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:34,858 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:36:34,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:34,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:34,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:36:34,859 INFO L87 Difference]: Start difference. First operand 1915 states and 2817 transitions. Second operand 3 states. [2019-10-07 14:36:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:35,063 INFO L93 Difference]: Finished difference Result 5508 states and 8224 transitions. [2019-10-07 14:36:35,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:35,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2019-10-07 14:36:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:35,102 INFO L225 Difference]: With dead ends: 5508 [2019-10-07 14:36:35,103 INFO L226 Difference]: Without dead ends: 3687 [2019-10-07 14:36:35,116 INFO L606 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 [2019-10-07 14:36:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2019-10-07 14:36:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3654. [2019-10-07 14:36:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2019-10-07 14:36:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5447 transitions. [2019-10-07 14:36:35,338 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5447 transitions. Word has length 104 [2019-10-07 14:36:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:35,339 INFO L462 AbstractCegarLoop]: Abstraction has 3654 states and 5447 transitions. [2019-10-07 14:36:35,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5447 transitions. [2019-10-07 14:36:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 14:36:35,343 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:35,343 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:35,343 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:35,344 INFO L82 PathProgramCache]: Analyzing trace with hash -798581348, now seen corresponding path program 1 times [2019-10-07 14:36:35,344 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:35,344 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:35,344 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:35,344 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:35,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:35,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:35,498 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:35,498 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:36:35,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:36:35,500 INFO L87 Difference]: Start difference. First operand 3654 states and 5447 transitions. Second operand 3 states. [2019-10-07 14:36:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:35,900 INFO L93 Difference]: Finished difference Result 10723 states and 16193 transitions. [2019-10-07 14:36:35,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:35,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-07 14:36:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:35,978 INFO L225 Difference]: With dead ends: 10723 [2019-10-07 14:36:35,979 INFO L226 Difference]: Without dead ends: 7167 [2019-10-07 14:36:36,008 INFO L606 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 [2019-10-07 14:36:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2019-10-07 14:36:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7133. [2019-10-07 14:36:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2019-10-07 14:36:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 10765 transitions. [2019-10-07 14:36:36,459 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 10765 transitions. Word has length 105 [2019-10-07 14:36:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:36,460 INFO L462 AbstractCegarLoop]: Abstraction has 7133 states and 10765 transitions. [2019-10-07 14:36:36,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 10765 transitions. [2019-10-07 14:36:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 14:36:36,465 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:36,465 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:36,465 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:36,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1012686374, now seen corresponding path program 1 times [2019-10-07 14:36:36,466 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:36,467 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:36,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:36,468 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:36,639 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:36,639 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:36,639 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:36:36,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:36,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:36:36,641 INFO L87 Difference]: Start difference. First operand 7133 states and 10765 transitions. Second operand 3 states. [2019-10-07 14:36:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:37,323 INFO L93 Difference]: Finished difference Result 21154 states and 32434 transitions. [2019-10-07 14:36:37,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:37,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-07 14:36:37,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:37,473 INFO L225 Difference]: With dead ends: 21154 [2019-10-07 14:36:37,474 INFO L226 Difference]: Without dead ends: 14127 [2019-10-07 14:36:37,527 INFO L606 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 [2019-10-07 14:36:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14127 states. [2019-10-07 14:36:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14127 to 14092. [2019-10-07 14:36:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14092 states. [2019-10-07 14:36:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14092 states to 14092 states and 21623 transitions. [2019-10-07 14:36:38,523 INFO L78 Accepts]: Start accepts. Automaton has 14092 states and 21623 transitions. Word has length 106 [2019-10-07 14:36:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:38,525 INFO L462 AbstractCegarLoop]: Abstraction has 14092 states and 21623 transitions. [2019-10-07 14:36:38,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14092 states and 21623 transitions. [2019-10-07 14:36:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:36:38,529 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:38,529 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:38,530 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1327414814, now seen corresponding path program 1 times [2019-10-07 14:36:38,530 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:38,530 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:38,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:38,531 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:36:38,695 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:38,696 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:36:38,696 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:36:38,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:36:38,699 INFO L87 Difference]: Start difference. First operand 14092 states and 21623 transitions. Second operand 3 states. [2019-10-07 14:36:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:39,133 INFO L93 Difference]: Finished difference Result 14998 states and 23064 transitions. [2019-10-07 14:36:39,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:39,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-07 14:36:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:39,247 INFO L225 Difference]: With dead ends: 14998 [2019-10-07 14:36:39,247 INFO L226 Difference]: Without dead ends: 14981 [2019-10-07 14:36:39,261 INFO L606 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 [2019-10-07 14:36:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2019-10-07 14:36:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 14951. [2019-10-07 14:36:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14951 states. [2019-10-07 14:36:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 22998 transitions. [2019-10-07 14:36:40,818 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 22998 transitions. Word has length 107 [2019-10-07 14:36:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:40,820 INFO L462 AbstractCegarLoop]: Abstraction has 14951 states and 22998 transitions. [2019-10-07 14:36:40,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 22998 transitions. [2019-10-07 14:36:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2019-10-07 14:36:40,834 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:40,835 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:40,835 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:40,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:40,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1445499494, now seen corresponding path program 1 times [2019-10-07 14:36:40,836 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:40,836 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:40,836 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:40,836 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-10-07 14:36:41,376 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:41,376 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:36:41,377 INFO L95 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 [2019-10-07 14:36:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:42,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 4624 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:36:42,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:36:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-07 14:36:42,884 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:36:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-10-07 14:36:44,933 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:36:44,933 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 20 [2019-10-07 14:36:44,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:36:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:36:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:36:44,940 INFO L87 Difference]: Start difference. First operand 14951 states and 22998 transitions. Second operand 9 states. [2019-10-07 14:36:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:45,896 INFO L93 Difference]: Finished difference Result 31274 states and 48710 transitions. [2019-10-07 14:36:45,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 14:36:45,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 312 [2019-10-07 14:36:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:46,039 INFO L225 Difference]: With dead ends: 31274 [2019-10-07 14:36:46,039 INFO L226 Difference]: Without dead ends: 16447 [2019-10-07 14:36:46,106 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 613 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:36:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16447 states. [2019-10-07 14:36:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16447 to 15291. [2019-10-07 14:36:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15291 states. [2019-10-07 14:36:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15291 states to 15291 states and 23440 transitions. [2019-10-07 14:36:47,058 INFO L78 Accepts]: Start accepts. Automaton has 15291 states and 23440 transitions. Word has length 312 [2019-10-07 14:36:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:47,061 INFO L462 AbstractCegarLoop]: Abstraction has 15291 states and 23440 transitions. [2019-10-07 14:36:47,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:36:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15291 states and 23440 transitions. [2019-10-07 14:36:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-10-07 14:36:47,081 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:47,081 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:47,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:36:47,297 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2072090242, now seen corresponding path program 1 times [2019-10-07 14:36:47,300 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:47,300 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:47,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:47,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-07 14:36:47,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:47,658 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:36:47,659 INFO L95 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 [2019-10-07 14:36:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:48,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 4634 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:36:48,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:36:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-07 14:36:48,954 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:36:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-07 14:36:49,742 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:36:49,743 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:36:49,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:36:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:36:49,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:36:49,746 INFO L87 Difference]: Start difference. First operand 15291 states and 23440 transitions. Second operand 3 states. [2019-10-07 14:36:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:51,559 INFO L93 Difference]: Finished difference Result 44297 states and 70110 transitions. [2019-10-07 14:36:51,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:36:51,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2019-10-07 14:36:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:51,773 INFO L225 Difference]: With dead ends: 44297 [2019-10-07 14:36:51,773 INFO L226 Difference]: Without dead ends: 29130 [2019-10-07 14:36:51,847 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:36:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29130 states. [2019-10-07 14:36:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29130 to 28778. [2019-10-07 14:36:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28778 states. [2019-10-07 14:36:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28778 states to 28778 states and 45221 transitions. [2019-10-07 14:36:53,423 INFO L78 Accepts]: Start accepts. Automaton has 28778 states and 45221 transitions. Word has length 315 [2019-10-07 14:36:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:36:53,424 INFO L462 AbstractCegarLoop]: Abstraction has 28778 states and 45221 transitions. [2019-10-07 14:36:53,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:36:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28778 states and 45221 transitions. [2019-10-07 14:36:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-07 14:36:53,445 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:36:53,445 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:36:53,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:36:53,663 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:36:53,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:36:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash 454583960, now seen corresponding path program 1 times [2019-10-07 14:36:53,664 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:36:53,664 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:53,664 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:53,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:36:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:36:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:36:53,934 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:36:53,935 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:36:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:36:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:36:54,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 3873 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:36:54,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:36:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:36:54,970 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:36:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:36:55,803 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:36:55,803 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-10-07 14:36:55,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:36:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:36:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:36:55,805 INFO L87 Difference]: Start difference. First operand 28778 states and 45221 transitions. Second operand 4 states. [2019-10-07 14:36:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:36:56,881 INFO L93 Difference]: Finished difference Result 60116 states and 97909 transitions. [2019-10-07 14:36:56,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:36:56,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2019-10-07 14:36:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:36:57,121 INFO L225 Difference]: With dead ends: 60116 [2019-10-07 14:36:57,121 INFO L226 Difference]: Without dead ends: 31430 [2019-10-07 14:36:57,250 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:36:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31430 states. [2019-10-07 14:36:59,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31430 to 31430. [2019-10-07 14:36:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31430 states. [2019-10-07 14:37:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31430 states to 31430 states and 50185 transitions. [2019-10-07 14:37:00,141 INFO L78 Accepts]: Start accepts. Automaton has 31430 states and 50185 transitions. Word has length 214 [2019-10-07 14:37:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:00,142 INFO L462 AbstractCegarLoop]: Abstraction has 31430 states and 50185 transitions. [2019-10-07 14:37:00,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:37:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 31430 states and 50185 transitions. [2019-10-07 14:37:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-07 14:37:00,165 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:00,166 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:00,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:00,384 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash -468788512, now seen corresponding path program 1 times [2019-10-07 14:37:00,385 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:00,385 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:00,385 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:00,386 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 14:37:00,653 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:00,653 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:00,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:01,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:37:01,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 14:37:01,511 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 14:37:02,106 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:37:02,106 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:37:02,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:37:02,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:37:02,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:37:02,108 INFO L87 Difference]: Start difference. First operand 31430 states and 50185 transitions. Second operand 4 states. [2019-10-07 14:37:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:03,102 INFO L93 Difference]: Finished difference Result 65420 states and 107769 transitions. [2019-10-07 14:37:03,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:37:03,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2019-10-07 14:37:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:03,300 INFO L225 Difference]: With dead ends: 65420 [2019-10-07 14:37:03,301 INFO L226 Difference]: Without dead ends: 34082 [2019-10-07 14:37:03,425 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:37:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34082 states. [2019-10-07 14:37:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34082 to 34082. [2019-10-07 14:37:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34082 states. [2019-10-07 14:37:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34082 states to 34082 states and 55149 transitions. [2019-10-07 14:37:06,539 INFO L78 Accepts]: Start accepts. Automaton has 34082 states and 55149 transitions. Word has length 226 [2019-10-07 14:37:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:06,539 INFO L462 AbstractCegarLoop]: Abstraction has 34082 states and 55149 transitions. [2019-10-07 14:37:06,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:37:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 34082 states and 55149 transitions. [2019-10-07 14:37:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-07 14:37:06,563 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:06,564 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:06,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:06,779 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash 543318264, now seen corresponding path program 1 times [2019-10-07 14:37:06,779 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:06,780 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:06,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:06,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-10-07 14:37:07,087 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:07,087 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:08,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 4695 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:37:08,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-10-07 14:37:08,479 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-10-07 14:37:09,223 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:37:09,224 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:37:09,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:37:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:37:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:37:09,233 INFO L87 Difference]: Start difference. First operand 34082 states and 55149 transitions. Second operand 3 states. [2019-10-07 14:37:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:10,665 INFO L93 Difference]: Finished difference Result 99610 states and 168388 transitions. [2019-10-07 14:37:10,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:37:10,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2019-10-07 14:37:10,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:11,005 INFO L225 Difference]: With dead ends: 99610 [2019-10-07 14:37:11,006 INFO L226 Difference]: Without dead ends: 65620 [2019-10-07 14:37:11,210 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:37:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65620 states. [2019-10-07 14:37:13,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65620 to 65498. [2019-10-07 14:37:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65498 states. [2019-10-07 14:37:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65498 states to 65498 states and 109532 transitions. [2019-10-07 14:37:13,384 INFO L78 Accepts]: Start accepts. Automaton has 65498 states and 109532 transitions. Word has length 332 [2019-10-07 14:37:13,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:13,385 INFO L462 AbstractCegarLoop]: Abstraction has 65498 states and 109532 transitions. [2019-10-07 14:37:13,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:37:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 65498 states and 109532 transitions. [2019-10-07 14:37:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-07 14:37:13,417 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:13,418 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:13,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:13,638 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1494340003, now seen corresponding path program 1 times [2019-10-07 14:37:13,639 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:13,639 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:13,639 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:13,639 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-10-07 14:37:13,900 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:13,900 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:37:13,900 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:37:13,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:37:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:37:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:37:13,902 INFO L87 Difference]: Start difference. First operand 65498 states and 109532 transitions. Second operand 4 states. [2019-10-07 14:37:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:16,314 INFO L93 Difference]: Finished difference Result 97570 states and 161764 transitions. [2019-10-07 14:37:16,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:37:16,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 231 [2019-10-07 14:37:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:16,649 INFO L225 Difference]: With dead ends: 97570 [2019-10-07 14:37:16,649 INFO L226 Difference]: Without dead ends: 65552 [2019-10-07 14:37:16,767 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:37:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65552 states. [2019-10-07 14:37:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65552 to 65498. [2019-10-07 14:37:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65498 states. [2019-10-07 14:37:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65498 states to 65498 states and 106522 transitions. [2019-10-07 14:37:20,719 INFO L78 Accepts]: Start accepts. Automaton has 65498 states and 106522 transitions. Word has length 231 [2019-10-07 14:37:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:20,719 INFO L462 AbstractCegarLoop]: Abstraction has 65498 states and 106522 transitions. [2019-10-07 14:37:20,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:37:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 65498 states and 106522 transitions. [2019-10-07 14:37:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-07 14:37:20,747 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:20,748 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:20,748 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash 420277841, now seen corresponding path program 1 times [2019-10-07 14:37:20,749 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:20,749 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:20,749 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:20,750 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-07 14:37:21,079 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:21,079 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:22,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 4691 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:37:22,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-07 14:37:22,500 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-10-07 14:37:23,233 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:37:23,233 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 4] total 14 [2019-10-07 14:37:23,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:37:23,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:37:23,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:37:23,234 INFO L87 Difference]: Start difference. First operand 65498 states and 106522 transitions. Second operand 4 states. [2019-10-07 14:37:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:24,483 INFO L93 Difference]: Finished difference Result 136144 states and 227742 transitions. [2019-10-07 14:37:24,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:37:24,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2019-10-07 14:37:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:24,825 INFO L225 Difference]: With dead ends: 136144 [2019-10-07 14:37:24,825 INFO L226 Difference]: Without dead ends: 70802 [2019-10-07 14:37:27,540 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 669 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:37:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70802 states. [2019-10-07 14:37:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70802 to 70802. [2019-10-07 14:37:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70802 states. [2019-10-07 14:37:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70802 states to 70802 states and 116450 transitions. [2019-10-07 14:37:29,075 INFO L78 Accepts]: Start accepts. Automaton has 70802 states and 116450 transitions. Word has length 332 [2019-10-07 14:37:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:29,076 INFO L462 AbstractCegarLoop]: Abstraction has 70802 states and 116450 transitions. [2019-10-07 14:37:29,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:37:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 70802 states and 116450 transitions. [2019-10-07 14:37:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2019-10-07 14:37:29,095 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:29,096 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:29,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:29,297 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash -856909256, now seen corresponding path program 1 times [2019-10-07 14:37:29,299 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:29,299 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:29,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:29,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-10-07 14:37:29,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:29,609 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:31,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 4694 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:37:31,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-07 14:37:31,171 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-10-07 14:37:31,926 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:37:31,926 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 4] total 14 [2019-10-07 14:37:31,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:37:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:37:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:37:31,928 INFO L87 Difference]: Start difference. First operand 70802 states and 116450 transitions. Second operand 4 states. [2019-10-07 14:37:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:33,165 INFO L93 Difference]: Finished difference Result 146752 states and 247462 transitions. [2019-10-07 14:37:33,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:37:33,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2019-10-07 14:37:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:34,025 INFO L225 Difference]: With dead ends: 146752 [2019-10-07 14:37:34,025 INFO L226 Difference]: Without dead ends: 76106 [2019-10-07 14:37:34,115 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 675 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:37:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76106 states. [2019-10-07 14:37:35,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76106 to 76106. [2019-10-07 14:37:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76106 states. [2019-10-07 14:37:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76106 states to 76106 states and 126378 transitions. [2019-10-07 14:37:35,665 INFO L78 Accepts]: Start accepts. Automaton has 76106 states and 126378 transitions. Word has length 335 [2019-10-07 14:37:35,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:35,666 INFO L462 AbstractCegarLoop]: Abstraction has 76106 states and 126378 transitions. [2019-10-07 14:37:35,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:37:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 76106 states and 126378 transitions. [2019-10-07 14:37:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-10-07 14:37:35,685 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:35,685 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:35,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:35,888 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1481271912, now seen corresponding path program 1 times [2019-10-07 14:37:35,889 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:35,890 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:35,890 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:35,890 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-07 14:37:36,170 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:36,170 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:40,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 4696 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:37:40,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-07 14:37:40,222 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-10-07 14:37:40,981 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:37:40,981 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11] total 14 [2019-10-07 14:37:40,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:37:40,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:37:40,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:37:40,983 INFO L87 Difference]: Start difference. First operand 76106 states and 126378 transitions. Second operand 5 states. [2019-10-07 14:37:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:42,171 INFO L93 Difference]: Finished difference Result 157360 states and 267182 transitions. [2019-10-07 14:37:42,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:37:42,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2019-10-07 14:37:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:42,460 INFO L225 Difference]: With dead ends: 157360 [2019-10-07 14:37:42,460 INFO L226 Difference]: Without dead ends: 81410 [2019-10-07 14:37:42,977 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 679 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:37:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81410 states. [2019-10-07 14:37:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81410 to 81410. [2019-10-07 14:37:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81410 states. [2019-10-07 14:37:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81410 states to 81410 states and 136306 transitions. [2019-10-07 14:37:44,523 INFO L78 Accepts]: Start accepts. Automaton has 81410 states and 136306 transitions. Word has length 337 [2019-10-07 14:37:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:37:44,524 INFO L462 AbstractCegarLoop]: Abstraction has 81410 states and 136306 transitions. [2019-10-07 14:37:44,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:37:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 81410 states and 136306 transitions. [2019-10-07 14:37:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-07 14:37:44,545 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:37:44,545 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:37:44,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:44,758 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:37:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:37:44,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1262939682, now seen corresponding path program 1 times [2019-10-07 14:37:44,759 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:37:44,759 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:44,759 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:44,759 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:37:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:37:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 14:37:45,182 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:37:45,182 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:37:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:37:46,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 3931 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 14:37:46,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:37:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-07 14:37:46,799 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:37:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-07 14:37:47,621 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:37:47,621 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [20] total 28 [2019-10-07 14:37:47,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:37:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:37:47,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:37:47,623 INFO L87 Difference]: Start difference. First operand 81410 states and 136306 transitions. Second operand 10 states. [2019-10-07 14:37:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:37:52,606 INFO L93 Difference]: Finished difference Result 214960 states and 360066 transitions. [2019-10-07 14:37:52,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:37:52,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 235 [2019-10-07 14:37:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:37:53,124 INFO L225 Difference]: With dead ends: 214960 [2019-10-07 14:37:53,124 INFO L226 Difference]: Without dead ends: 133826 [2019-10-07 14:37:53,247 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 471 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:37:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133826 states. [2019-10-07 14:38:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133826 to 132798. [2019-10-07 14:38:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132798 states. [2019-10-07 14:38:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132798 states to 132798 states and 221510 transitions. [2019-10-07 14:38:00,609 INFO L78 Accepts]: Start accepts. Automaton has 132798 states and 221510 transitions. Word has length 235 [2019-10-07 14:38:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:38:00,610 INFO L462 AbstractCegarLoop]: Abstraction has 132798 states and 221510 transitions. [2019-10-07 14:38:00,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:38:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 132798 states and 221510 transitions. [2019-10-07 14:38:00,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-07 14:38:00,640 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:38:00,640 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:38:00,850 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:38:00,851 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:38:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:38:00,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1511378303, now seen corresponding path program 1 times [2019-10-07 14:38:00,852 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:38:00,852 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:00,853 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:00,853 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:38:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-07 14:38:01,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:01,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:38:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:38:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:02,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 3937 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:38:02,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:38:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-07 14:38:03,058 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:38:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-10-07 14:38:03,622 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:38:03,622 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [20] total 27 [2019-10-07 14:38:03,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:38:03,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:38:03,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:38:03,624 INFO L87 Difference]: Start difference. First operand 132798 states and 221510 transitions. Second operand 9 states. [2019-10-07 14:38:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:38:07,812 INFO L93 Difference]: Finished difference Result 139348 states and 250362 transitions. [2019-10-07 14:38:07,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:38:07,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 238 [2019-10-07 14:38:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:38:08,627 INFO L225 Difference]: With dead ends: 139348 [2019-10-07 14:38:08,627 INFO L226 Difference]: Without dead ends: 139038 [2019-10-07 14:38:08,695 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 479 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2019-10-07 14:38:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139038 states. [2019-10-07 14:38:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139038 to 135318. [2019-10-07 14:38:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135318 states. [2019-10-07 14:38:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135318 states to 135318 states and 229882 transitions. [2019-10-07 14:38:19,483 INFO L78 Accepts]: Start accepts. Automaton has 135318 states and 229882 transitions. Word has length 238 [2019-10-07 14:38:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:38:19,484 INFO L462 AbstractCegarLoop]: Abstraction has 135318 states and 229882 transitions. [2019-10-07 14:38:19,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:38:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 135318 states and 229882 transitions. [2019-10-07 14:38:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2019-10-07 14:38:19,521 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:38:19,522 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:38:19,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:38:19,733 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:38:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:38:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1732790548, now seen corresponding path program 1 times [2019-10-07 14:38:19,734 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:38:19,734 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:19,734 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:19,735 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:38:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:38:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-10-07 14:38:20,017 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:38:20,017 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:38:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:38:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:38:21,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 5797 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 14:38:21,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:38:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2019-10-07 14:38:21,729 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:38:22,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:22,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:22,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:22,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:22,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:38:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-10-07 14:38:23,245 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:38:23,282 INFO L162 IcfgInterpreter]: Started Sifa with 263 locations of interest [2019-10-07 14:38:23,283 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:38:23,291 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:38:23,299 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:38:23,300 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:39:18,526 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 791 [2019-10-07 14:39:23,922 WARN L191 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:39:24,347 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:39:24,949 WARN L191 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:39:25,221 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:39:25,880 WARN L191 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:26,451 WARN L191 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:27,104 WARN L191 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:27,700 WARN L191 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:28,891 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1094 DAG size of output: 1092 [2019-10-07 14:39:29,532 WARN L191 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:30,131 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:30,663 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:31,315 WARN L191 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:31,896 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:39:31,919 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 421 for LOIs [2019-10-07 14:39:32,179 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 759 [2019-10-07 14:39:32,296 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 759 [2019-10-07 14:39:32,704 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 967 [2019-10-07 14:39:32,706 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1146 for LOIs [2019-10-07 14:39:33,347 WARN L191 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 1146 [2019-10-07 14:39:33,856 WARN L191 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 1146 [2019-10-07 14:39:34,011 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:34,885 WARN L191 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:35,532 WARN L191 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 1146 [2019-10-07 14:39:36,050 WARN L191 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 1146 [2019-10-07 14:39:36,369 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:37,333 WARN L191 SmtUtils]: Spent 961.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:38,022 WARN L191 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:38,541 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:38,707 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:39,709 WARN L191 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:41,617 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 1346 DAG size of output: 1148 [2019-10-07 14:39:42,209 WARN L191 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:42,378 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:43,380 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:43,905 WARN L191 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:44,416 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:44,567 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:45,577 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:46,090 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:46,608 WARN L191 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:46,758 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:47,764 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:48,281 WARN L191 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:48,798 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:48,950 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:49,955 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:50,462 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:50,980 WARN L191 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:51,133 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:52,015 WARN L191 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:52,653 WARN L191 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:53,166 WARN L191 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:53,317 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:54,226 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:54,864 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:55,374 WARN L191 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:55,524 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:56,390 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:56,902 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:57,549 WARN L191 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:57,703 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:39:58,582 WARN L191 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:39:59,098 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:59,610 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:39:59,761 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:40:00,650 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:40:01,162 WARN L191 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:40:01,688 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:40:01,840 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:40:02,726 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:40:03,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:40:03,024 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:40:03,032 INFO L168 Benchmark]: Toolchain (without parser) took 218638.64 ms. Allocated memory was 146.3 MB in the beginning and 3.9 GB in the end (delta: 3.8 GB). Free memory was 100.1 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,037 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1186.35 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 136.4 MB in the end (delta: -36.5 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,041 INFO L168 Benchmark]: Boogie Preprocessor took 261.10 ms. Allocated memory is still 205.5 MB. Free memory was 136.4 MB in the beginning and 126.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,045 INFO L168 Benchmark]: RCFGBuilder took 5092.76 ms. Allocated memory was 205.5 MB in the beginning and 292.6 MB in the end (delta: 87.0 MB). Free memory was 126.0 MB in the beginning and 135.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,049 INFO L168 Benchmark]: TraceAbstraction took 212093.43 ms. Allocated memory was 292.6 MB in the beginning and 3.9 GB in the end (delta: 3.6 GB). Free memory was 132.8 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-10-07 14:40:03,061 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1186.35 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 99.9 MB in the beginning and 136.4 MB in the end (delta: -36.5 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.10 ms. Allocated memory is still 205.5 MB. Free memory was 136.4 MB in the beginning and 126.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5092.76 ms. Allocated memory was 205.5 MB in the beginning and 292.6 MB in the end (delta: 87.0 MB). Free memory was 126.0 MB in the beginning and 135.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212093.43 ms. Allocated memory was 292.6 MB in the beginning and 3.9 GB in the end (delta: 3.6 GB). Free memory was 132.8 MB in the beginning and 2.5 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...