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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:00,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:00,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:00,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:00,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:00,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:00,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:00,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:00,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:00,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:00,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:00,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:00,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:00,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:00,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:00,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:00,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:00,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:00,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:00,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:00,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:00,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:00,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:00,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:00,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:00,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:00,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:00,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:00,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:00,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:00,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:00,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:00,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:00,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:00,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:00,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:00,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:00,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:00,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:00,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:00,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:00,252 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 [2019-10-13 23:03:00,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:00,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:00,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:00,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:00,267 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:00,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:00,267 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:00,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:00,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:00,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:00,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:00,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:00,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:00,269 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:00,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:00,269 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:00,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:00,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:00,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:00,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:00,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:00,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:00,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:00,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:00,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:00,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:00,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:00,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:00,272 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 [2019-10-13 23:03:00,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:00,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:00,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:00,577 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:00,578 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:00,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-13 23:03:00,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15a4c9f6/c7e9014718c84a558a9fc5084c7a44cb/FLAG77babfea4 [2019-10-13 23:03:01,317 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:01,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-13 23:03:01,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15a4c9f6/c7e9014718c84a558a9fc5084c7a44cb/FLAG77babfea4 [2019-10-13 23:03:01,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15a4c9f6/c7e9014718c84a558a9fc5084c7a44cb [2019-10-13 23:03:01,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:01,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:01,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:01,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:01,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:01,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:01" (1/1) ... [2019-10-13 23:03:01,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9fe496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:01, skipping insertion in model container [2019-10-13 23:03:01,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:01" (1/1) ... [2019-10-13 23:03:01,572 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:01,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:02,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:02,352 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:02,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:02,599 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02 WrapperNode [2019-10-13 23:03:02,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:02,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:02,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:02,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:02,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (1/1) ... [2019-10-13 23:03:02,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:02,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:02,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:02,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:02,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (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 [2019-10-13 23:03:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:02,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:07,917 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:07,917 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:07,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:07 BoogieIcfgContainer [2019-10-13 23:03:07,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:07,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:07,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:07,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:07,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:01" (1/3) ... [2019-10-13 23:03:07,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5a39fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:07, skipping insertion in model container [2019-10-13 23:03:07,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:02" (2/3) ... [2019-10-13 23:03:07,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5a39fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:07, skipping insertion in model container [2019-10-13 23:03:07,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:07" (3/3) ... [2019-10-13 23:03:07,927 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2019-10-13 23:03:07,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:07,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:07,959 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:07,992 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:07,992 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:07,992 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:07,992 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:07,992 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:07,993 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:07,993 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:07,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states. [2019-10-13 23:03:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:03:08,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:08,050 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] [2019-10-13 23:03:08,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:08,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1489499019, now seen corresponding path program 1 times [2019-10-13 23:03:08,070 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:08,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898079255] [2019-10-13 23:03:08,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,071 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:08,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898079255] [2019-10-13 23:03:08,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:08,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:08,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125901843] [2019-10-13 23:03:08,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:08,841 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:08,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:08,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:08,858 INFO L87 Difference]: Start difference. First operand 568 states. Second operand 2 states. [2019-10-13 23:03:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:08,961 INFO L93 Difference]: Finished difference Result 477 states and 709 transitions. [2019-10-13 23:03:08,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:08,964 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 129 [2019-10-13 23:03:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:08,999 INFO L225 Difference]: With dead ends: 477 [2019-10-13 23:03:08,999 INFO L226 Difference]: Without dead ends: 443 [2019-10-13 23:03:09,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2019-10-13 23:03:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2019-10-13 23:03:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-13 23:03:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 658 transitions. [2019-10-13 23:03:09,105 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 658 transitions. Word has length 129 [2019-10-13 23:03:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:09,108 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 658 transitions. [2019-10-13 23:03:09,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 658 transitions. [2019-10-13 23:03:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 23:03:09,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:09,119 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] [2019-10-13 23:03:09,119 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash -879383074, now seen corresponding path program 1 times [2019-10-13 23:03:09,120 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:09,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024633273] [2019-10-13 23:03:09,120 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:09,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:09,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:09,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024633273] [2019-10-13 23:03:09,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:09,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:09,648 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528090505] [2019-10-13 23:03:09,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:09,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:09,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:09,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:09,652 INFO L87 Difference]: Start difference. First operand 443 states and 658 transitions. Second operand 9 states. [2019-10-13 23:03:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:14,895 INFO L93 Difference]: Finished difference Result 1368 states and 2097 transitions. [2019-10-13 23:03:14,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:03:14,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2019-10-13 23:03:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:14,915 INFO L225 Difference]: With dead ends: 1368 [2019-10-13 23:03:14,915 INFO L226 Difference]: Without dead ends: 978 [2019-10-13 23:03:14,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:03:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2019-10-13 23:03:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 946. [2019-10-13 23:03:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2019-10-13 23:03:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1451 transitions. [2019-10-13 23:03:15,061 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1451 transitions. Word has length 130 [2019-10-13 23:03:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,062 INFO L462 AbstractCegarLoop]: Abstraction has 946 states and 1451 transitions. [2019-10-13 23:03:15,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1451 transitions. [2019-10-13 23:03:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:15,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,067 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, 1, 1] [2019-10-13 23:03:15,067 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1221597036, now seen corresponding path program 1 times [2019-10-13 23:03:15,068 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276176411] [2019-10-13 23:03:15,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,069 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:15,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276176411] [2019-10-13 23:03:15,299 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:15,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:15,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025556741] [2019-10-13 23:03:15,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:15,300 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:15,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:15,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:15,301 INFO L87 Difference]: Start difference. First operand 946 states and 1451 transitions. Second operand 7 states. [2019-10-13 23:03:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,412 INFO L93 Difference]: Finished difference Result 1508 states and 2329 transitions. [2019-10-13 23:03:15,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:15,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 23:03:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,423 INFO L225 Difference]: With dead ends: 1508 [2019-10-13 23:03:15,423 INFO L226 Difference]: Without dead ends: 983 [2019-10-13 23:03:15,428 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 [2019-10-13 23:03:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2019-10-13 23:03:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 967. [2019-10-13 23:03:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-13 23:03:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1481 transitions. [2019-10-13 23:03:15,498 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1481 transitions. Word has length 135 [2019-10-13 23:03:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,499 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1481 transitions. [2019-10-13 23:03:15,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1481 transitions. [2019-10-13 23:03:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:03:15,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,505 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, 1, 1] [2019-10-13 23:03:15,505 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash -245024436, now seen corresponding path program 1 times [2019-10-13 23:03:15,506 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87672896] [2019-10-13 23:03:15,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:15,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87672896] [2019-10-13 23:03:15,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:15,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:15,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811296346] [2019-10-13 23:03:15,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:15,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:15,821 INFO L87 Difference]: Start difference. First operand 967 states and 1481 transitions. Second operand 7 states. [2019-10-13 23:03:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,926 INFO L93 Difference]: Finished difference Result 1537 states and 2367 transitions. [2019-10-13 23:03:15,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:15,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-13 23:03:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,936 INFO L225 Difference]: With dead ends: 1537 [2019-10-13 23:03:15,936 INFO L226 Difference]: Without dead ends: 998 [2019-10-13 23:03:15,941 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 [2019-10-13 23:03:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2019-10-13 23:03:16,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 970. [2019-10-13 23:03:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-13 23:03:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1484 transitions. [2019-10-13 23:03:16,023 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1484 transitions. Word has length 135 [2019-10-13 23:03:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:16,027 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1484 transitions. [2019-10-13 23:03:16,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1484 transitions. [2019-10-13 23:03:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 23:03:16,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,034 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, 1] [2019-10-13 23:03:16,035 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1927403097, now seen corresponding path program 1 times [2019-10-13 23:03:16,036 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400328260] [2019-10-13 23:03:16,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:16,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400328260] [2019-10-13 23:03:16,301 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,301 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:16,301 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396578613] [2019-10-13 23:03:16,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:16,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:16,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:16,303 INFO L87 Difference]: Start difference. First operand 970 states and 1484 transitions. Second operand 7 states. [2019-10-13 23:03:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:16,400 INFO L93 Difference]: Finished difference Result 1542 states and 2372 transitions. [2019-10-13 23:03:16,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:16,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-13 23:03:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:16,414 INFO L225 Difference]: With dead ends: 1542 [2019-10-13 23:03:16,414 INFO L226 Difference]: Without dead ends: 1001 [2019-10-13 23:03:16,417 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 [2019-10-13 23:03:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-13 23:03:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 973. [2019-10-13 23:03:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-13 23:03:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1487 transitions. [2019-10-13 23:03:16,478 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1487 transitions. Word has length 134 [2019-10-13 23:03:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:16,481 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 1487 transitions. [2019-10-13 23:03:16,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1487 transitions. [2019-10-13 23:03:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 23:03:16,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,485 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, 1, 1, 1, 1, 1] [2019-10-13 23:03:16,488 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1247424113, now seen corresponding path program 1 times [2019-10-13 23:03:16,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789751580] [2019-10-13 23:03:16,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:16,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789751580] [2019-10-13 23:03:16,914 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:16,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356403625] [2019-10-13 23:03:16,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:16,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:16,917 INFO L87 Difference]: Start difference. First operand 973 states and 1487 transitions. Second operand 8 states. [2019-10-13 23:03:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,368 INFO L93 Difference]: Finished difference Result 2075 states and 3194 transitions. [2019-10-13 23:03:20,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:20,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2019-10-13 23:03:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,380 INFO L225 Difference]: With dead ends: 2075 [2019-10-13 23:03:20,380 INFO L226 Difference]: Without dead ends: 1407 [2019-10-13 23:03:20,384 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 [2019-10-13 23:03:20,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2019-10-13 23:03:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1357. [2019-10-13 23:03:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-10-13 23:03:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2037 transitions. [2019-10-13 23:03:20,461 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2037 transitions. Word has length 138 [2019-10-13 23:03:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,462 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 2037 transitions. [2019-10-13 23:03:20,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2037 transitions. [2019-10-13 23:03:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:03:20,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:20,467 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1987904052, now seen corresponding path program 1 times [2019-10-13 23:03:20,467 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725048435] [2019-10-13 23:03:20,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:20,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725048435] [2019-10-13 23:03:20,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:03:20,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512978230] [2019-10-13 23:03:20,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:03:20,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:03:20,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:03:20,685 INFO L87 Difference]: Start difference. First operand 1357 states and 2037 transitions. Second operand 6 states. [2019-10-13 23:03:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:24,614 INFO L93 Difference]: Finished difference Result 5384 states and 8416 transitions. [2019-10-13 23:03:24,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:24,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-13 23:03:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:24,650 INFO L225 Difference]: With dead ends: 5384 [2019-10-13 23:03:24,651 INFO L226 Difference]: Without dead ends: 4081 [2019-10-13 23:03:24,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2019-10-13 23:03:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3796. [2019-10-13 23:03:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3796 states. [2019-10-13 23:03:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5842 transitions. [2019-10-13 23:03:24,873 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5842 transitions. Word has length 142 [2019-10-13 23:03:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:24,876 INFO L462 AbstractCegarLoop]: Abstraction has 3796 states and 5842 transitions. [2019-10-13 23:03:24,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:03:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5842 transitions. [2019-10-13 23:03:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 23:03:24,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:24,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:24,883 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 640300264, now seen corresponding path program 1 times [2019-10-13 23:03:24,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:24,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292674275] [2019-10-13 23:03:24,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:24,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:24,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:25,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292674275] [2019-10-13 23:03:25,196 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:25,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:25,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590250618] [2019-10-13 23:03:25,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:25,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:25,199 INFO L87 Difference]: Start difference. First operand 3796 states and 5842 transitions. Second operand 7 states. [2019-10-13 23:03:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:28,555 INFO L93 Difference]: Finished difference Result 6788 states and 10487 transitions. [2019-10-13 23:03:28,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:28,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-10-13 23:03:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:28,586 INFO L225 Difference]: With dead ends: 6788 [2019-10-13 23:03:28,587 INFO L226 Difference]: Without dead ends: 3966 [2019-10-13 23:03:28,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2019-10-13 23:03:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 3880. [2019-10-13 23:03:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3880 states. [2019-10-13 23:03:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 5948 transitions. [2019-10-13 23:03:28,788 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 5948 transitions. Word has length 144 [2019-10-13 23:03:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:28,788 INFO L462 AbstractCegarLoop]: Abstraction has 3880 states and 5948 transitions. [2019-10-13 23:03:28,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 5948 transitions. [2019-10-13 23:03:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 23:03:28,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:28,794 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:28,794 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 514592771, now seen corresponding path program 1 times [2019-10-13 23:03:28,799 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:28,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912239948] [2019-10-13 23:03:28,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:28,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:28,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:29,186 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2019-10-13 23:03:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:29,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912239948] [2019-10-13 23:03:29,272 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:29,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:03:29,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560571790] [2019-10-13 23:03:29,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:29,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:29,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:29,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:29,276 INFO L87 Difference]: Start difference. First operand 3880 states and 5948 transitions. Second operand 9 states.