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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:10,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:10,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:10,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:10,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:10,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:10,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:10,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:10,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:10,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:10,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:10,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:10,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:10,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:10,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:10,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:10,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:10,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:10,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:10,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:10,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:10,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:10,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:10,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:10,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:10,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:10,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:10,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:10,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:10,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:10,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:10,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:10,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:10,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:10,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:10,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:10,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:10,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:10,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:10,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:10,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:10,108 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 03:07:10,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:10,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:10,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:10,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:10,146 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:10,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:10,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:10,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:10,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:10,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:10,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:10,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:10,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:10,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:10,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:10,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:10,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:10,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:10,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:10,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:10,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:10,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:10,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:10,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:10,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:10,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:10,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:10,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:10,158 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 03:07:10,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:10,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:10,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:10,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:10,502 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:10,503 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-15 03:07:10,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bd3ad03/334e99451ecd4b89bda7add128bc1048/FLAG588d2300a [2019-10-15 03:07:11,290 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:11,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-15 03:07:11,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bd3ad03/334e99451ecd4b89bda7add128bc1048/FLAG588d2300a [2019-10-15 03:07:11,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bd3ad03/334e99451ecd4b89bda7add128bc1048 [2019-10-15 03:07:11,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:11,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:11,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:11,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:11,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:11,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27396f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:11, skipping insertion in model container [2019-10-15 03:07:11,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:11" (1/1) ... [2019-10-15 03:07:11,466 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:11,562 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:12,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:12,409 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:12,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:12,687 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:12,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12 WrapperNode [2019-10-15 03:07:12,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:12,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:12,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:12,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:12,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (1/1) ... [2019-10-15 03:07:12,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:12,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:12,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:12,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:12,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (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 03:07:12,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:13,006 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:13,008 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:13,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:13,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:13,018 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:13,018 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:13,026 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:13,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:13,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:13,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:13,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:13,037 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:07:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:07:13,038 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:07:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:07:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:13,060 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:13,060 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:07:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:07:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:07:19,101 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:07:19,102 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:07:19,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:19 BoogieIcfgContainer [2019-10-15 03:07:19,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:07:19,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:07:19,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:07:19,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:07:19,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:11" (1/3) ... [2019-10-15 03:07:19,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8cfb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:19, skipping insertion in model container [2019-10-15 03:07:19,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:12" (2/3) ... [2019-10-15 03:07:19,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8cfb07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:19, skipping insertion in model container [2019-10-15 03:07:19,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:19" (3/3) ... [2019-10-15 03:07:19,111 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2019-10-15 03:07:19,122 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:07:19,131 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:07:19,142 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:07:19,174 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:07:19,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:07:19,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:07:19,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:07:19,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:07:19,175 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:07:19,175 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:07:19,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:07:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states. [2019-10-15 03:07:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:07:19,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:19,235 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] [2019-10-15 03:07:19,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1952285522, now seen corresponding path program 1 times [2019-10-15 03:07:19,254 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:19,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11891505] [2019-10-15 03:07:19,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:19,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:19,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:20,128 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 03:07:20,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11891505] [2019-10-15 03:07:20,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:20,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:20,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425210285] [2019-10-15 03:07:20,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:20,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:20,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:20,154 INFO L87 Difference]: Start difference. First operand 550 states. Second operand 8 states. [2019-10-15 03:07:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:20,417 INFO L93 Difference]: Finished difference Result 853 states and 1312 transitions. [2019-10-15 03:07:20,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:20,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-15 03:07:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:20,453 INFO L225 Difference]: With dead ends: 853 [2019-10-15 03:07:20,453 INFO L226 Difference]: Without dead ends: 464 [2019-10-15 03:07:20,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-10-15 03:07:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 429. [2019-10-15 03:07:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-15 03:07:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 637 transitions. [2019-10-15 03:07:20,603 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 637 transitions. Word has length 115 [2019-10-15 03:07:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:20,604 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 637 transitions. [2019-10-15 03:07:20,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 637 transitions. [2019-10-15 03:07:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:07:20,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:20,675 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] [2019-10-15 03:07:20,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1054827528, now seen corresponding path program 1 times [2019-10-15 03:07:20,676 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:20,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144411437] [2019-10-15 03:07:20,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:20,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:20,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:21,089 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 03:07:21,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144411437] [2019-10-15 03:07:21,089 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:21,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:21,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264705282] [2019-10-15 03:07:21,092 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:21,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:21,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:21,093 INFO L87 Difference]: Start difference. First operand 429 states and 637 transitions. Second operand 7 states. [2019-10-15 03:07:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:25,811 INFO L93 Difference]: Finished difference Result 1296 states and 1994 transitions. [2019-10-15 03:07:25,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:07:25,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:07:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:25,820 INFO L225 Difference]: With dead ends: 1296 [2019-10-15 03:07:25,820 INFO L226 Difference]: Without dead ends: 920 [2019-10-15 03:07:25,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:07:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2019-10-15 03:07:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 893. [2019-10-15 03:07:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2019-10-15 03:07:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1376 transitions. [2019-10-15 03:07:25,905 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1376 transitions. Word has length 120 [2019-10-15 03:07:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:25,906 INFO L462 AbstractCegarLoop]: Abstraction has 893 states and 1376 transitions. [2019-10-15 03:07:25,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1376 transitions. [2019-10-15 03:07:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:07:25,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:25,911 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] [2019-10-15 03:07:25,911 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1595381557, now seen corresponding path program 1 times [2019-10-15 03:07:25,912 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:25,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930268055] [2019-10-15 03:07:25,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:25,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:26,286 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 03:07:26,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930268055] [2019-10-15 03:07:26,289 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:26,289 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:07:26,289 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151929998] [2019-10-15 03:07:26,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:07:26,290 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:26,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:07:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:07:26,291 INFO L87 Difference]: Start difference. First operand 893 states and 1376 transitions. Second operand 5 states. [2019-10-15 03:07:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:26,384 INFO L93 Difference]: Finished difference Result 1406 states and 2182 transitions. [2019-10-15 03:07:26,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:26,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-15 03:07:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:26,398 INFO L225 Difference]: With dead ends: 1406 [2019-10-15 03:07:26,398 INFO L226 Difference]: Without dead ends: 915 [2019-10-15 03:07:26,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:07:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-15 03:07:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2019-10-15 03:07:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2019-10-15 03:07:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1391 transitions. [2019-10-15 03:07:26,489 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1391 transitions. Word has length 124 [2019-10-15 03:07:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:26,492 INFO L462 AbstractCegarLoop]: Abstraction has 905 states and 1391 transitions. [2019-10-15 03:07:26,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:07:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1391 transitions. [2019-10-15 03:07:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:07:26,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:26,497 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] [2019-10-15 03:07:26,497 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:26,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1852638131, now seen corresponding path program 1 times [2019-10-15 03:07:26,498 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:26,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037175084] [2019-10-15 03:07:26,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:26,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:26,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:26,836 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 03:07:26,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037175084] [2019-10-15 03:07:26,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:26,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:26,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956284564] [2019-10-15 03:07:26,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:26,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:26,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:26,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:26,839 INFO L87 Difference]: Start difference. First operand 905 states and 1391 transitions. Second operand 8 states. [2019-10-15 03:07:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:31,553 INFO L93 Difference]: Finished difference Result 1904 states and 2936 transitions. [2019-10-15 03:07:31,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:31,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-15 03:07:31,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:31,563 INFO L225 Difference]: With dead ends: 1904 [2019-10-15 03:07:31,564 INFO L226 Difference]: Without dead ends: 1305 [2019-10-15 03:07:31,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2019-10-15 03:07:31,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1255. [2019-10-15 03:07:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-15 03:07:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1888 transitions. [2019-10-15 03:07:31,637 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1888 transitions. Word has length 128 [2019-10-15 03:07:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:31,638 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1888 transitions. [2019-10-15 03:07:31,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1888 transitions. [2019-10-15 03:07:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:07:31,642 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:31,642 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, 1] [2019-10-15 03:07:31,642 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:31,643 INFO L82 PathProgramCache]: Analyzing trace with hash -954095009, now seen corresponding path program 1 times [2019-10-15 03:07:31,643 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:31,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149143375] [2019-10-15 03:07:31,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:31,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:31,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:31,870 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 03:07:31,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149143375] [2019-10-15 03:07:31,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:31,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:31,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921501779] [2019-10-15 03:07:31,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:31,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:31,873 INFO L87 Difference]: Start difference. First operand 1255 states and 1888 transitions. Second operand 7 states. [2019-10-15 03:07:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:32,317 INFO L93 Difference]: Finished difference Result 2348 states and 3621 transitions. [2019-10-15 03:07:32,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:32,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 03:07:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:32,331 INFO L225 Difference]: With dead ends: 2348 [2019-10-15 03:07:32,331 INFO L226 Difference]: Without dead ends: 1255 [2019-10-15 03:07:32,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2019-10-15 03:07:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2019-10-15 03:07:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-15 03:07:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1856 transitions. [2019-10-15 03:07:32,422 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1856 transitions. Word has length 131 [2019-10-15 03:07:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:32,422 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1856 transitions. [2019-10-15 03:07:32,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:32,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1856 transitions. [2019-10-15 03:07:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:07:32,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:32,426 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:32,426 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1846314582, now seen corresponding path program 1 times [2019-10-15 03:07:32,430 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:32,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921072491] [2019-10-15 03:07:32,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:32,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:07:32,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921072491] [2019-10-15 03:07:32,759 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:32,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:07:32,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479715364] [2019-10-15 03:07:32,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:32,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:32,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:32,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:32,767 INFO L87 Difference]: Start difference. First operand 1255 states and 1856 transitions. Second operand 7 states. [2019-10-15 03:07:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:38,722 INFO L93 Difference]: Finished difference Result 2217 states and 3291 transitions. [2019-10-15 03:07:38,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:07:38,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-15 03:07:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:38,734 INFO L225 Difference]: With dead ends: 2217 [2019-10-15 03:07:38,734 INFO L226 Difference]: Without dead ends: 1325 [2019-10-15 03:07:38,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:07:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2019-10-15 03:07:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1282. [2019-10-15 03:07:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2019-10-15 03:07:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1890 transitions. [2019-10-15 03:07:38,801 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1890 transitions. Word has length 133 [2019-10-15 03:07:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:38,803 INFO L462 AbstractCegarLoop]: Abstraction has 1282 states and 1890 transitions. [2019-10-15 03:07:38,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1890 transitions. [2019-10-15 03:07:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:07:38,806 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:38,807 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:07:38,807 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash -358357125, now seen corresponding path program 1 times [2019-10-15 03:07:38,808 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:38,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212959036] [2019-10-15 03:07:38,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:38,808 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:38,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:07:39,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212959036] [2019-10-15 03:07:39,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:39,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 03:07:39,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394167579] [2019-10-15 03:07:39,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 03:07:39,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:39,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 03:07:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-15 03:07:39,557 INFO L87 Difference]: Start difference. First operand 1282 states and 1890 transitions. Second operand 26 states.