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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:07,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:07,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:07,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:07,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:07,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:07,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:07,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:07,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:07,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:07,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:07,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:07,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:07,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:07,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:07,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:07,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:07,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:07,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:07,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:07,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:07,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:07,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:07,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:07,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:07,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:07,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:07,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:07,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:07,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:07,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:07,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:07,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:07,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:07,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:07,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:07,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:07,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:07,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:07,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:07,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:07,080 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 03:07:07,095 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:07,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:07,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:07,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:07,097 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:07,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:07,098 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:07,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:07,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:07,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:07,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:07,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:07,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:07,099 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:07,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:07,099 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:07,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:07,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:07,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:07,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:07,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:07,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:07,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:07,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:07,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:07,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:07,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:07,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:07,102 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 03:07:07,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:07,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:07,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:07,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:07,413 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:07,414 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-10-15 03:07:07,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9361d543/09d5a021dd674ee9a22b5c97beee1d01/FLAGfcccdd4ea [2019-10-15 03:07:08,155 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:08,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-10-15 03:07:08,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9361d543/09d5a021dd674ee9a22b5c97beee1d01/FLAGfcccdd4ea [2019-10-15 03:07:08,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9361d543/09d5a021dd674ee9a22b5c97beee1d01 [2019-10-15 03:07:08,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:08,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:08,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:08,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:08,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:08,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:08" (1/1) ... [2019-10-15 03:07:08,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75521bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:08, skipping insertion in model container [2019-10-15 03:07:08,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:08" (1/1) ... [2019-10-15 03:07:08,389 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:08,491 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:09,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:09,424 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:09,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:09,718 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:09,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09 WrapperNode [2019-10-15 03:07:09,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:09,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:09,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:09,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:09,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (1/1) ... [2019-10-15 03:07:09,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:09,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:09,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:09,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:09,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (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 03:07:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:10,031 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:10,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:10,032 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:10,032 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:10,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:07:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:07:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:07:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:07:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:07:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:07:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:07:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:07:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:07:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:07:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:10,073 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:10,073 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:16,508 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:16,508 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:16,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:16 BoogieIcfgContainer [2019-10-15 03:07:16,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:16,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:16,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:16,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:16,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:08" (1/3) ... [2019-10-15 03:07:16,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef3a5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:16, skipping insertion in model container [2019-10-15 03:07:16,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:09" (2/3) ... [2019-10-15 03:07:16,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef3a5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:16, skipping insertion in model container [2019-10-15 03:07:16,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:16" (3/3) ... [2019-10-15 03:07:16,524 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2019-10-15 03:07:16,535 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:16,546 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:16,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:16,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:16,594 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:16,594 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:16,594 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:16,594 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:16,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:16,594 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:16,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states. [2019-10-15 03:07:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:07:16,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:16,645 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 03:07:16,647 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:16,654 INFO L82 PathProgramCache]: Analyzing trace with hash -482573627, now seen corresponding path program 1 times [2019-10-15 03:07:16,665 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:16,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122990594] [2019-10-15 03:07:16,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:16,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:16,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:17,587 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 03:07:17,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122990594] [2019-10-15 03:07:17,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:17,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:17,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602642847] [2019-10-15 03:07:17,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:17,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:17,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:17,624 INFO L87 Difference]: Start difference. First operand 585 states. Second operand 6 states. [2019-10-15 03:07:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:22,187 INFO L93 Difference]: Finished difference Result 1390 states and 2150 transitions. [2019-10-15 03:07:22,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:07:22,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 03:07:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:22,222 INFO L225 Difference]: With dead ends: 1390 [2019-10-15 03:07:22,222 INFO L226 Difference]: Without dead ends: 964 [2019-10-15 03:07:22,233 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 03:07:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-10-15 03:07:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 875. [2019-10-15 03:07:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-10-15 03:07:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1346 transitions. [2019-10-15 03:07:22,457 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1346 transitions. Word has length 97 [2019-10-15 03:07:22,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:22,458 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 1346 transitions. [2019-10-15 03:07:22,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1346 transitions. [2019-10-15 03:07:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:07:22,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:22,479 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:22,479 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1422196509, now seen corresponding path program 1 times [2019-10-15 03:07:22,481 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:22,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624322177] [2019-10-15 03:07:22,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:22,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:22,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:22,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624322177] [2019-10-15 03:07:22,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:22,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:07:22,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776728464] [2019-10-15 03:07:22,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:07:22,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:07:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:07:22,971 INFO L87 Difference]: Start difference. First operand 875 states and 1346 transitions. Second operand 6 states. [2019-10-15 03:07:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:23,671 INFO L93 Difference]: Finished difference Result 914 states and 1402 transitions. [2019-10-15 03:07:23,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:23,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-15 03:07:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:23,686 INFO L225 Difference]: With dead ends: 914 [2019-10-15 03:07:23,686 INFO L226 Difference]: Without dead ends: 897 [2019-10-15 03:07:23,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2019-10-15 03:07:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 879. [2019-10-15 03:07:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2019-10-15 03:07:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1350 transitions. [2019-10-15 03:07:23,780 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1350 transitions. Word has length 146 [2019-10-15 03:07:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:23,781 INFO L462 AbstractCegarLoop]: Abstraction has 879 states and 1350 transitions. [2019-10-15 03:07:23,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:07:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1350 transitions. [2019-10-15 03:07:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:07:23,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:23,797 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:23,797 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash 482572223, now seen corresponding path program 1 times [2019-10-15 03:07:23,797 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:23,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249551932] [2019-10-15 03:07:23,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:23,798 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:23,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:24,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249551932] [2019-10-15 03:07:24,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:24,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:07:24,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222036806] [2019-10-15 03:07:24,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:07:24,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:07:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:07:24,135 INFO L87 Difference]: Start difference. First operand 879 states and 1350 transitions. Second operand 12 states. [2019-10-15 03:07:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:34,509 INFO L93 Difference]: Finished difference Result 2653 states and 4096 transitions. [2019-10-15 03:07:34,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:07:34,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2019-10-15 03:07:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:34,523 INFO L225 Difference]: With dead ends: 2653 [2019-10-15 03:07:34,524 INFO L226 Difference]: Without dead ends: 1827 [2019-10-15 03:07:34,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:07:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2019-10-15 03:07:34,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1768. [2019-10-15 03:07:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1768 states. [2019-10-15 03:07:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2706 transitions. [2019-10-15 03:07:34,666 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2706 transitions. Word has length 150 [2019-10-15 03:07:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:34,669 INFO L462 AbstractCegarLoop]: Abstraction has 1768 states and 2706 transitions. [2019-10-15 03:07:34,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:07:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2706 transitions. [2019-10-15 03:07:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 03:07:34,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:34,677 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:34,678 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:34,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:34,678 INFO L82 PathProgramCache]: Analyzing trace with hash 215831978, now seen corresponding path program 1 times [2019-10-15 03:07:34,678 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:34,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610240196] [2019-10-15 03:07:34,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:34,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:34,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:07:35,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610240196] [2019-10-15 03:07:35,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:35,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:07:35,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017221683] [2019-10-15 03:07:35,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:35,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:35,094 INFO L87 Difference]: Start difference. First operand 1768 states and 2706 transitions. Second operand 9 states. [2019-10-15 03:07:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:35,945 INFO L93 Difference]: Finished difference Result 1881 states and 2855 transitions. [2019-10-15 03:07:35,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:07:35,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2019-10-15 03:07:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:35,962 INFO L225 Difference]: With dead ends: 1881 [2019-10-15 03:07:35,962 INFO L226 Difference]: Without dead ends: 1864 [2019-10-15 03:07:35,964 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:07:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2019-10-15 03:07:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1815. [2019-10-15 03:07:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2019-10-15 03:07:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2767 transitions. [2019-10-15 03:07:36,094 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2767 transitions. Word has length 151 [2019-10-15 03:07:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:36,098 INFO L462 AbstractCegarLoop]: Abstraction has 1815 states and 2767 transitions. [2019-10-15 03:07:36,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2767 transitions. [2019-10-15 03:07:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 03:07:36,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:36,103 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:36,104 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:36,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1389201064, now seen corresponding path program 1 times [2019-10-15 03:07:36,104 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:36,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695361659] [2019-10-15 03:07:36,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:36,105 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:36,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:07:37,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695361659] [2019-10-15 03:07:37,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231087892] [2019-10-15 03:07:37,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:38,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 3542 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:07:38,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:07:38,715 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:07:39,726 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:07:39,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 39 [2019-10-15 03:07:39,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513981801] [2019-10-15 03:07:39,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:07:39,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:39,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:07:39,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 03:07:39,729 INFO L87 Difference]: Start difference. First operand 1815 states and 2767 transitions. Second operand 9 states. [2019-10-15 03:07:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:44,999 INFO L93 Difference]: Finished difference Result 4500 states and 6909 transitions. [2019-10-15 03:07:44,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:07:44,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-10-15 03:07:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:45,017 INFO L225 Difference]: With dead ends: 4500 [2019-10-15 03:07:45,018 INFO L226 Difference]: Without dead ends: 2744 [2019-10-15 03:07:45,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2019-10-15 03:07:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2019-10-15 03:07:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2703. [2019-10-15 03:07:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2703 states. [2019-10-15 03:07:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4140 transitions. [2019-10-15 03:07:45,202 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4140 transitions. Word has length 166 [2019-10-15 03:07:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:45,205 INFO L462 AbstractCegarLoop]: Abstraction has 2703 states and 4140 transitions. [2019-10-15 03:07:45,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4140 transitions. [2019-10-15 03:07:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:07:45,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:45,211 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:45,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:45,429 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -73532161, now seen corresponding path program 1 times [2019-10-15 03:07:45,431 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:45,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375409884] [2019-10-15 03:07:45,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:45,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:45,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY