java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:03,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:03,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:03,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:03,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:03,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:03,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:03,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:03,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:03,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:03,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:03,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:03,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:03,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:03,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:03,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:03,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:03,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:03,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:04,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:04,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:04,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:04,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:04,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:04,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:04,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:04,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:04,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:04,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:04,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:04,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:04,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:04,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:04,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:04,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:04,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:04,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:04,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:04,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:04,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:04,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:04,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:07:04,074 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:04,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:04,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:04,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:04,079 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:04,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:04,079 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:04,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:04,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:04,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:04,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:04,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:04,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:04,084 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:04,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:04,085 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:04,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:04,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:04,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:04,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:04,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:04,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:04,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:04,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:04,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:04,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:04,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:04,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:04,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:07:04,465 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:04,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:04,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:04,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:04,499 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:04,499 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-15 03:07:04,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c77928/3abf21f565b2461aabfc740fe58e7c5f/FLAG650f0cecb [2019-10-15 03:07:05,266 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:05,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-15 03:07:05,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c77928/3abf21f565b2461aabfc740fe58e7c5f/FLAG650f0cecb [2019-10-15 03:07:05,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2c77928/3abf21f565b2461aabfc740fe58e7c5f [2019-10-15 03:07:05,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:05,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:05,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:05,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:05,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:05,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:05" (1/1) ... [2019-10-15 03:07:05,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39284e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:05, skipping insertion in model container [2019-10-15 03:07:05,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:05" (1/1) ... [2019-10-15 03:07:05,483 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:05,581 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:06,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:06,460 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:06,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:06,713 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:06,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06 WrapperNode [2019-10-15 03:07:06,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:06,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:06,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:06,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:06,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... [2019-10-15 03:07:06,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:06,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:06,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:06,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:06,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:07,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:07,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:07,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:07,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:07,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-15 03:07:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:07,032 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:07,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-15 03:07:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-15 03:07:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:07,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:07,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:14,425 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:14,426 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:14,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:14 BoogieIcfgContainer [2019-10-15 03:07:14,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:14,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:14,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:14,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:14,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:05" (1/3) ... [2019-10-15 03:07:14,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d83d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:14, skipping insertion in model container [2019-10-15 03:07:14,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:06" (2/3) ... [2019-10-15 03:07:14,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d83d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:14, skipping insertion in model container [2019-10-15 03:07:14,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:14" (3/3) ... [2019-10-15 03:07:14,436 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2019-10-15 03:07:14,447 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:14,457 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:14,469 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:14,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:14,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:14,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:14,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:14,568 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:14,568 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:14,568 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:14,568 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states. [2019-10-15 03:07:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:07:14,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:14,634 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:14,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:14,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1941866427, now seen corresponding path program 1 times [2019-10-15 03:07:14,663 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:14,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445484008] [2019-10-15 03:07:14,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:14,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:14,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:15,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445484008] [2019-10-15 03:07:15,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:15,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:07:15,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097711126] [2019-10-15 03:07:15,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:07:15,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:07:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:15,482 INFO L87 Difference]: Start difference. First operand 558 states. Second operand 2 states. [2019-10-15 03:07:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:15,646 INFO L93 Difference]: Finished difference Result 461 states and 690 transitions. [2019-10-15 03:07:15,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:07:15,651 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-10-15 03:07:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:15,693 INFO L225 Difference]: With dead ends: 461 [2019-10-15 03:07:15,693 INFO L226 Difference]: Without dead ends: 427 [2019-10-15 03:07:15,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:07:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-15 03:07:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-15 03:07:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-15 03:07:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 639 transitions. [2019-10-15 03:07:15,862 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 639 transitions. Word has length 97 [2019-10-15 03:07:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:15,864 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 639 transitions. [2019-10-15 03:07:15,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:07:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 639 transitions. [2019-10-15 03:07:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 03:07:15,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:15,873 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:15,873 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:15,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1144477141, now seen corresponding path program 1 times [2019-10-15 03:07:15,874 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:15,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360071385] [2019-10-15 03:07:15,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:15,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:15,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:16,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360071385] [2019-10-15 03:07:16,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:16,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:16,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042406724] [2019-10-15 03:07:16,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:16,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:16,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:16,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:16,432 INFO L87 Difference]: Start difference. First operand 427 states and 639 transitions. Second operand 9 states. [2019-10-15 03:07:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:24,495 INFO L93 Difference]: Finished difference Result 1142 states and 1751 transitions. [2019-10-15 03:07:24,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 03:07:24,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-15 03:07:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:24,503 INFO L225 Difference]: With dead ends: 1142 [2019-10-15 03:07:24,504 INFO L226 Difference]: Without dead ends: 768 [2019-10-15 03:07:24,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:07:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-15 03:07:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 737. [2019-10-15 03:07:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-10-15 03:07:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1094 transitions. [2019-10-15 03:07:24,622 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1094 transitions. Word has length 98 [2019-10-15 03:07:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:24,624 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 1094 transitions. [2019-10-15 03:07:24,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1094 transitions. [2019-10-15 03:07:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:07:24,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:24,644 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:24,645 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -580814009, now seen corresponding path program 1 times [2019-10-15 03:07:24,646 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:24,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734299694] [2019-10-15 03:07:24,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:24,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:24,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:25,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734299694] [2019-10-15 03:07:25,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:25,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:07:25,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037916628] [2019-10-15 03:07:25,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:07:25,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:07:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:07:25,072 INFO L87 Difference]: Start difference. First operand 737 states and 1094 transitions. Second operand 3 states. [2019-10-15 03:07:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:25,267 INFO L93 Difference]: Finished difference Result 2097 states and 3165 transitions. [2019-10-15 03:07:25,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:07:25,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-15 03:07:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:25,292 INFO L225 Difference]: With dead ends: 2097 [2019-10-15 03:07:25,293 INFO L226 Difference]: Without dead ends: 1415 [2019-10-15 03:07:25,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:07:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2019-10-15 03:07:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1408. [2019-10-15 03:07:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2019-10-15 03:07:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2116 transitions. [2019-10-15 03:07:25,499 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2116 transitions. Word has length 99 [2019-10-15 03:07:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:25,502 INFO L462 AbstractCegarLoop]: Abstraction has 1408 states and 2116 transitions. [2019-10-15 03:07:25,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:07:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2116 transitions. [2019-10-15 03:07:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:07:25,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:25,508 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:25,508 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:25,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -825660218, now seen corresponding path program 1 times [2019-10-15 03:07:25,509 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:25,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918918847] [2019-10-15 03:07:25,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:26,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918918847] [2019-10-15 03:07:26,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:26,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:26,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139397664] [2019-10-15 03:07:26,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:26,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:26,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:26,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:26,079 INFO L87 Difference]: Start difference. First operand 1408 states and 2116 transitions. Second operand 6 states. [2019-10-15 03:07:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:30,792 INFO L93 Difference]: Finished difference Result 4505 states and 6913 transitions. [2019-10-15 03:07:30,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:07:30,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-10-15 03:07:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:30,832 INFO L225 Difference]: With dead ends: 4505 [2019-10-15 03:07:30,832 INFO L226 Difference]: Without dead ends: 3153 [2019-10-15 03:07:30,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-10-15 03:07:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2842. [2019-10-15 03:07:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2019-10-15 03:07:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4359 transitions. [2019-10-15 03:07:31,126 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4359 transitions. Word has length 100 [2019-10-15 03:07:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:31,127 INFO L462 AbstractCegarLoop]: Abstraction has 2842 states and 4359 transitions. [2019-10-15 03:07:31,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4359 transitions. [2019-10-15 03:07:31,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:07:31,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:31,131 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:31,132 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash -821262406, now seen corresponding path program 1 times [2019-10-15 03:07:31,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:31,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620078277] [2019-10-15 03:07:31,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:31,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:31,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:31,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620078277] [2019-10-15 03:07:31,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:31,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:31,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493206270] [2019-10-15 03:07:31,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:31,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:31,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:31,431 INFO L87 Difference]: Start difference. First operand 2842 states and 4359 transitions. Second operand 8 states. [2019-10-15 03:07:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:31,732 INFO L93 Difference]: Finished difference Result 6001 states and 9352 transitions. [2019-10-15 03:07:31,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:31,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2019-10-15 03:07:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:31,771 INFO L225 Difference]: With dead ends: 6001 [2019-10-15 03:07:31,772 INFO L226 Difference]: Without dead ends: 3218 [2019-10-15 03:07:31,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2019-10-15 03:07:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2874. [2019-10-15 03:07:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2874 states. [2019-10-15 03:07:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4391 transitions. [2019-10-15 03:07:32,074 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4391 transitions. Word has length 126 [2019-10-15 03:07:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:32,076 INFO L462 AbstractCegarLoop]: Abstraction has 2874 states and 4391 transitions. [2019-10-15 03:07:32,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4391 transitions. [2019-10-15 03:07:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 03:07:32,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:32,085 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:32,086 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1069297882, now seen corresponding path program 1 times [2019-10-15 03:07:32,087 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:32,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378179934] [2019-10-15 03:07:32,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:07:32,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378179934] [2019-10-15 03:07:32,409 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:32,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:07:32,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909248237] [2019-10-15 03:07:32,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:07:32,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:32,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:07:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:07:32,412 INFO L87 Difference]: Start difference. First operand 2874 states and 4391 transitions. Second operand 12 states. [2019-10-15 03:07:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:42,582 INFO L93 Difference]: Finished difference Result 8568 states and 13108 transitions. [2019-10-15 03:07:42,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:07:42,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2019-10-15 03:07:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:42,637 INFO L225 Difference]: With dead ends: 8568 [2019-10-15 03:07:42,637 INFO L226 Difference]: Without dead ends: 5749 [2019-10-15 03:07:42,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:07:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2019-10-15 03:07:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 5647. [2019-10-15 03:07:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5647 states. [2019-10-15 03:07:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 8550 transitions. [2019-10-15 03:07:43,131 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 8550 transitions. Word has length 129 [2019-10-15 03:07:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:43,132 INFO L462 AbstractCegarLoop]: Abstraction has 5647 states and 8550 transitions. [2019-10-15 03:07:43,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:07:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 8550 transitions. [2019-10-15 03:07:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 03:07:43,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:43,137 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:43,138 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:43,138 INFO L82 PathProgramCache]: Analyzing trace with hash -750649053, now seen corresponding path program 1 times [2019-10-15 03:07:43,138 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:43,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773267009] [2019-10-15 03:07:43,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:43,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:43,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat