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_spec2_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:58,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:58,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:58,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:58,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:58,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:58,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:58,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:58,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:58,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:58,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:58,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:58,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:58,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:58,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:58,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:58,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:58,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:58,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:58,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:58,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:58,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:58,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:58,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:58,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:58,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:58,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:58,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:58,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:58,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:58,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:58,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:58,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:58,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:58,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:58,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:58,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:58,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:58,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:58,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:58,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:58,108 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 03:07:58,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:58,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:58,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:58,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:58,137 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:58,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:58,138 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:58,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:58,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:58,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:58,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:58,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:58,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:58,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:58,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:58,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:58,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:58,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:58,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:58,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:58,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:58,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:58,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:58,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:58,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:58,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:58,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:58,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:58,146 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 03:07:58,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:58,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:58,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:58,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:58,576 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:58,577 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-15 03:07:58,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2697c08/6acac6334559481d98fbb0b0a75207c6/FLAGa12a82fcb [2019-10-15 03:07:59,480 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:59,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product21.cil.c [2019-10-15 03:07:59,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2697c08/6acac6334559481d98fbb0b0a75207c6/FLAGa12a82fcb [2019-10-15 03:07:59,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2697c08/6acac6334559481d98fbb0b0a75207c6 [2019-10-15 03:07:59,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:59,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:59,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:59,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:59,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:59,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:07:59,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9cbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59, skipping insertion in model container [2019-10-15 03:07:59,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:07:59,671 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:59,767 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:00,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:00,560 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:00,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:00,773 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:00,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00 WrapperNode [2019-10-15 03:08:00,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:00,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:00,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:00,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:00,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (1/1) ... [2019-10-15 03:08:00,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:00,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:00,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:01,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:01,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (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 03:08:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:07,536 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:07,537 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:07,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:07 BoogieIcfgContainer [2019-10-15 03:08:07,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:07,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:07,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:07,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:59" (1/3) ... [2019-10-15 03:08:07,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686b1439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:07, skipping insertion in model container [2019-10-15 03:08:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:00" (2/3) ... [2019-10-15 03:08:07,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686b1439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:07, skipping insertion in model container [2019-10-15 03:08:07,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:07" (3/3) ... [2019-10-15 03:08:07,550 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2019-10-15 03:08:07,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:07,571 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:07,588 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:07,638 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:07,639 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:07,639 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:07,639 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:07,640 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:07,640 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:07,640 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:07,641 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-10-15 03:08:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-15 03:08:07,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:07,713 INFO L380 BasicCegarLoop]: trace histogram [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 03:08:07,716 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:07,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1246126467, now seen corresponding path program 1 times [2019-10-15 03:08:07,736 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:07,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124259899] [2019-10-15 03:08:07,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:08,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124259899] [2019-10-15 03:08:08,673 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:08,673 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:08:08,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938427812] [2019-10-15 03:08:08,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:08:08,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:08:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:08,700 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 9 states. [2019-10-15 03:08:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:15,763 INFO L93 Difference]: Finished difference Result 1394 states and 2144 transitions. [2019-10-15 03:08:15,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 03:08:15,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-15 03:08:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:15,796 INFO L225 Difference]: With dead ends: 1394 [2019-10-15 03:08:15,796 INFO L226 Difference]: Without dead ends: 975 [2019-10-15 03:08:15,805 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-15 03:08:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-15 03:08:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 943. [2019-10-15 03:08:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-15 03:08:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1446 transitions. [2019-10-15 03:08:16,004 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1446 transitions. Word has length 106 [2019-10-15 03:08:16,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:16,007 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1446 transitions. [2019-10-15 03:08:16,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:08:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1446 transitions. [2019-10-15 03:08:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:16,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:16,021 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:16,021 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:16,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1358788791, now seen corresponding path program 1 times [2019-10-15 03:08:16,023 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:16,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884204389] [2019-10-15 03:08:16,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:16,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884204389] [2019-10-15 03:08:16,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:16,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:16,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279892969] [2019-10-15 03:08:16,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:16,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:16,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:16,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:16,414 INFO L87 Difference]: Start difference. First operand 943 states and 1446 transitions. Second operand 7 states. [2019-10-15 03:08:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:16,563 INFO L93 Difference]: Finished difference Result 1509 states and 2328 transitions. [2019-10-15 03:08:16,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:16,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-15 03:08:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:16,581 INFO L225 Difference]: With dead ends: 1509 [2019-10-15 03:08:16,581 INFO L226 Difference]: Without dead ends: 980 [2019-10-15 03:08:16,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2019-10-15 03:08:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 964. [2019-10-15 03:08:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-10-15 03:08:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1476 transitions. [2019-10-15 03:08:16,708 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1476 transitions. Word has length 112 [2019-10-15 03:08:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:16,709 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1476 transitions. [2019-10-15 03:08:16,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1476 transitions. [2019-10-15 03:08:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-15 03:08:16,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:16,715 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:16,715 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1366611604, now seen corresponding path program 1 times [2019-10-15 03:08:16,716 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:16,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995285329] [2019-10-15 03:08:16,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:16,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:17,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995285329] [2019-10-15 03:08:17,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:17,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:17,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672328265] [2019-10-15 03:08:17,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:17,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:17,013 INFO L87 Difference]: Start difference. First operand 964 states and 1476 transitions. Second operand 7 states. [2019-10-15 03:08:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:17,116 INFO L93 Difference]: Finished difference Result 1538 states and 2366 transitions. [2019-10-15 03:08:17,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:17,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-15 03:08:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:17,126 INFO L225 Difference]: With dead ends: 1538 [2019-10-15 03:08:17,127 INFO L226 Difference]: Without dead ends: 995 [2019-10-15 03:08:17,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2019-10-15 03:08:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2019-10-15 03:08:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-15 03:08:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1479 transitions. [2019-10-15 03:08:17,215 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1479 transitions. Word has length 111 [2019-10-15 03:08:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:17,218 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1479 transitions. [2019-10-15 03:08:17,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1479 transitions. [2019-10-15 03:08:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:17,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:17,232 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:17,233 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:17,233 INFO L82 PathProgramCache]: Analyzing trace with hash 107832681, now seen corresponding path program 1 times [2019-10-15 03:08:17,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:17,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963924123] [2019-10-15 03:08:17,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:17,234 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:17,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:17,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963924123] [2019-10-15 03:08:17,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:17,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:17,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107226006] [2019-10-15 03:08:17,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:17,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:17,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:17,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:17,596 INFO L87 Difference]: Start difference. First operand 967 states and 1479 transitions. Second operand 7 states. [2019-10-15 03:08:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:17,805 INFO L93 Difference]: Finished difference Result 1543 states and 2371 transitions. [2019-10-15 03:08:17,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:17,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-15 03:08:17,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:17,815 INFO L225 Difference]: With dead ends: 1543 [2019-10-15 03:08:17,815 INFO L226 Difference]: Without dead ends: 998 [2019-10-15 03:08:17,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2019-10-15 03:08:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 970. [2019-10-15 03:08:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-15 03:08:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1482 transitions. [2019-10-15 03:08:17,879 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1482 transitions. Word has length 112 [2019-10-15 03:08:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:17,879 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1482 transitions. [2019-10-15 03:08:17,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1482 transitions. [2019-10-15 03:08:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:08:17,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:17,883 INFO L380 BasicCegarLoop]: trace histogram [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 03:08:17,884 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash 906333268, now seen corresponding path program 1 times [2019-10-15 03:08:17,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:17,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181641102] [2019-10-15 03:08:17,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:17,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:17,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:18,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181641102] [2019-10-15 03:08:18,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:18,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:18,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904936458] [2019-10-15 03:08:18,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:18,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:18,171 INFO L87 Difference]: Start difference. First operand 970 states and 1482 transitions. Second operand 7 states. [2019-10-15 03:08:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:23,838 INFO L93 Difference]: Finished difference Result 2080 states and 3197 transitions. [2019-10-15 03:08:23,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:23,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 03:08:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:23,860 INFO L225 Difference]: With dead ends: 2080 [2019-10-15 03:08:23,861 INFO L226 Difference]: Without dead ends: 1408 [2019-10-15 03:08:23,941 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2019-10-15 03:08:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1358. [2019-10-15 03:08:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2019-10-15 03:08:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2036 transitions. [2019-10-15 03:08:24,046 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2036 transitions. Word has length 115 [2019-10-15 03:08:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:24,049 INFO L462 AbstractCegarLoop]: Abstraction has 1358 states and 2036 transitions. [2019-10-15 03:08:24,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2036 transitions. [2019-10-15 03:08:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:24,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:24,054 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:24,054 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:24,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1602196738, now seen corresponding path program 1 times [2019-10-15 03:08:24,055 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:24,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172372431] [2019-10-15 03:08:24,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:24,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:24,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:24,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172372431] [2019-10-15 03:08:24,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:24,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:08:24,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927029284] [2019-10-15 03:08:24,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:08:24,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:24,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:08:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:24,426 INFO L87 Difference]: Start difference. First operand 1358 states and 2036 transitions. Second operand 9 states. [2019-10-15 03:08:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:24,932 INFO L93 Difference]: Finished difference Result 2646 states and 4067 transitions. [2019-10-15 03:08:24,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:08:24,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2019-10-15 03:08:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:24,946 INFO L225 Difference]: With dead ends: 2646 [2019-10-15 03:08:24,946 INFO L226 Difference]: Without dead ends: 1562 [2019-10-15 03:08:24,955 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:08:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2019-10-15 03:08:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2019-10-15 03:08:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2019-10-15 03:08:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2340 transitions. [2019-10-15 03:08:25,035 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2340 transitions. Word has length 118 [2019-10-15 03:08:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:25,037 INFO L462 AbstractCegarLoop]: Abstraction has 1562 states and 2340 transitions. [2019-10-15 03:08:25,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:08:25,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2340 transitions. [2019-10-15 03:08:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:08:25,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:25,041 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:25,041 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1206469110, now seen corresponding path program 1 times [2019-10-15 03:08:25,042 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:25,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144004695] [2019-10-15 03:08:25,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:08:25,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144004695] [2019-10-15 03:08:25,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:25,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:25,233 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821440886] [2019-10-15 03:08:25,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:25,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:25,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:25,235 INFO L87 Difference]: Start difference. First operand 1562 states and 2340 transitions. Second operand 7 states. [2019-10-15 03:08:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:29,310 INFO L93 Difference]: Finished difference Result 2782 states and 4191 transitions. [2019-10-15 03:08:29,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:29,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2019-10-15 03:08:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:29,336 INFO L225 Difference]: With dead ends: 2782 [2019-10-15 03:08:29,339 INFO L226 Difference]: Without dead ends: 1632 [2019-10-15 03:08:29,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2019-10-15 03:08:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1589. [2019-10-15 03:08:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2019-10-15 03:08:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2374 transitions. [2019-10-15 03:08:29,455 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2374 transitions. Word has length 121 [2019-10-15 03:08:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:29,457 INFO L462 AbstractCegarLoop]: Abstraction has 1589 states and 2374 transitions. [2019-10-15 03:08:29,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2374 transitions. [2019-10-15 03:08:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:08:29,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:29,462 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:29,462 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1333707121, now seen corresponding path program 1 times [2019-10-15 03:08:29,463 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:29,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964703895] [2019-10-15 03:08:29,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:29,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:29,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:29,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964703895] [2019-10-15 03:08:29,723 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:29,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:29,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111206922] [2019-10-15 03:08:29,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:29,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:29,726 INFO L87 Difference]: Start difference. First operand 1589 states and 2374 transitions. Second operand 4 states. [2019-10-15 03:08:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:32,040 INFO L93 Difference]: Finished difference Result 4792 states and 7295 transitions. [2019-10-15 03:08:32,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:32,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-15 03:08:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:32,069 INFO L225 Difference]: With dead ends: 4792 [2019-10-15 03:08:32,070 INFO L226 Difference]: Without dead ends: 3245 [2019-10-15 03:08:32,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2019-10-15 03:08:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3100. [2019-10-15 03:08:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3100 states. [2019-10-15 03:08:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4694 transitions. [2019-10-15 03:08:32,285 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4694 transitions. Word has length 124 [2019-10-15 03:08:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:32,286 INFO L462 AbstractCegarLoop]: Abstraction has 3100 states and 4694 transitions. [2019-10-15 03:08:32,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4694 transitions. [2019-10-15 03:08:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:08:32,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:32,294 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:32,295 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1606328455, now seen corresponding path program 1 times [2019-10-15 03:08:32,296 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:32,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884238201] [2019-10-15 03:08:32,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:32,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:32,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:32,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884238201] [2019-10-15 03:08:32,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:32,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:32,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419689487] [2019-10-15 03:08:32,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:32,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:32,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:32,598 INFO L87 Difference]: Start difference. First operand 3100 states and 4694 transitions. Second operand 4 states. [2019-10-15 03:08:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:35,494 INFO L93 Difference]: Finished difference Result 9247 states and 14259 transitions. [2019-10-15 03:08:35,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:35,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-15 03:08:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:35,593 INFO L225 Difference]: With dead ends: 9247 [2019-10-15 03:08:35,594 INFO L226 Difference]: Without dead ends: 6190 [2019-10-15 03:08:35,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2019-10-15 03:08:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 6012. [2019-10-15 03:08:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6012 states. [2019-10-15 03:08:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9200 transitions. [2019-10-15 03:08:36,147 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9200 transitions. Word has length 125 [2019-10-15 03:08:36,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:36,148 INFO L462 AbstractCegarLoop]: Abstraction has 6012 states and 9200 transitions. [2019-10-15 03:08:36,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9200 transitions. [2019-10-15 03:08:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:08:36,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:36,154 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:08:36,155 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:36,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1741853107, now seen corresponding path program 1 times [2019-10-15 03:08:36,156 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:36,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176603808] [2019-10-15 03:08:36,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,156 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:36,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:36,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176603808] [2019-10-15 03:08:36,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:36,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:36,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618906797] [2019-10-15 03:08:36,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:36,429 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:36,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:36,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:36,430 INFO L87 Difference]: Start difference. First operand 6012 states and 9200 transitions. Second operand 4 states.