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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:57,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:57,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:57,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:57,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:57,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:57,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:57,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:57,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:57,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:57,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:57,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:57,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:57,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:57,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:57,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:57,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:57,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:57,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:57,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:57,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:57,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:57,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:57,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:57,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:57,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:57,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:57,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:57,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:57,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:57,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:57,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:57,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:57,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:57,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:57,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:57,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:57,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:57,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:57,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:57,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:57,395 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 03:07:57,435 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:57,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:57,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:57,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:57,437 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:57,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:57,437 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:57,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:57,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:57,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:57,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:57,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:57,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:57,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:57,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:57,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:57,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:57,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:57,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:57,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:57,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:57,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:57,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:57,448 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 03:07:57,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:57,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:57,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:57,776 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:57,777 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:57,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-15 03:07:57,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358304d35/ae1b49a57c6842048e54e5e4b2186d91/FLAG7177c3fc3 [2019-10-15 03:07:58,650 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:58,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-15 03:07:58,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358304d35/ae1b49a57c6842048e54e5e4b2186d91/FLAG7177c3fc3 [2019-10-15 03:07:58,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358304d35/ae1b49a57c6842048e54e5e4b2186d91 [2019-10-15 03:07:58,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:58,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:58,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:58,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:58,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:58,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:58" (1/1) ... [2019-10-15 03:07:58,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39284e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:58, skipping insertion in model container [2019-10-15 03:07:58,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:58" (1/1) ... [2019-10-15 03:07:58,804 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:58,898 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:59,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:59,670 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:59,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:59,940 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:59,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59 WrapperNode [2019-10-15 03:07:59,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:59,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:59,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:59,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:59,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:07:59,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (1/1) ... [2019-10-15 03:08:00,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:00,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:00,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:00,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:00,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (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 03:08:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:08:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:08:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:00,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:08:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:08:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:08:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:08:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:08:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:08:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:00,340 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:00,342 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:00,343 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:00,344 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:06,837 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:06,837 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:06,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:06 BoogieIcfgContainer [2019-10-15 03:08:06,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:06,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:06,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:06,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:06,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:58" (1/3) ... [2019-10-15 03:08:06,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f4bc91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:06, skipping insertion in model container [2019-10-15 03:08:06,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:59" (2/3) ... [2019-10-15 03:08:06,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f4bc91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:06, skipping insertion in model container [2019-10-15 03:08:06,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:06" (3/3) ... [2019-10-15 03:08:06,847 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2019-10-15 03:08:06,857 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:06,867 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:06,879 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:06,911 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:06,911 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:06,911 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:06,911 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:06,911 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:06,911 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:06,912 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:06,912 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states. [2019-10-15 03:08:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 03:08:06,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:06,961 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:06,964 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1883644735, now seen corresponding path program 1 times [2019-10-15 03:08:06,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:06,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595689605] [2019-10-15 03:08:06,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:06,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:07,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595689605] [2019-10-15 03:08:07,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:07,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:07,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009535804] [2019-10-15 03:08:07,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:07,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:07,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:07,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:07,620 INFO L87 Difference]: Start difference. First operand 584 states. Second operand 2 states. [2019-10-15 03:08:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:07,691 INFO L93 Difference]: Finished difference Result 481 states and 716 transitions. [2019-10-15 03:08:07,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:07,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-15 03:08:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:07,719 INFO L225 Difference]: With dead ends: 481 [2019-10-15 03:08:07,719 INFO L226 Difference]: Without dead ends: 447 [2019-10-15 03:08:07,724 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-15 03:08:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2019-10-15 03:08:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2019-10-15 03:08:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 665 transitions. [2019-10-15 03:08:07,878 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 665 transitions. Word has length 74 [2019-10-15 03:08:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:07,882 INFO L462 AbstractCegarLoop]: Abstraction has 447 states and 665 transitions. [2019-10-15 03:08:07,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 665 transitions. [2019-10-15 03:08:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 03:08:07,889 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:07,889 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:07,890 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1118354277, now seen corresponding path program 1 times [2019-10-15 03:08:07,890 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:07,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19979947] [2019-10-15 03:08:07,891 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,891 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:07,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:08:08,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19979947] [2019-10-15 03:08:08,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:08,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:08:08,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599022723] [2019-10-15 03:08:08,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:08:08,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:08,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:08:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:08:08,301 INFO L87 Difference]: Start difference. First operand 447 states and 665 transitions. Second operand 6 states. [2019-10-15 03:08:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:13,074 INFO L93 Difference]: Finished difference Result 1366 states and 2101 transitions. [2019-10-15 03:08:13,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:08:13,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-15 03:08:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:13,088 INFO L225 Difference]: With dead ends: 1366 [2019-10-15 03:08:13,088 INFO L226 Difference]: Without dead ends: 961 [2019-10-15 03:08:13,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-15 03:08:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 868. [2019-10-15 03:08:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-15 03:08:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1337 transitions. [2019-10-15 03:08:13,191 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1337 transitions. Word has length 75 [2019-10-15 03:08:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:13,192 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1337 transitions. [2019-10-15 03:08:13,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:08:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1337 transitions. [2019-10-15 03:08:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 03:08:13,201 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:13,202 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:13,202 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -883527737, now seen corresponding path program 1 times [2019-10-15 03:08:13,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:13,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558708831] [2019-10-15 03:08:13,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:13,203 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:13,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:13,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558708831] [2019-10-15 03:08:13,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:13,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:08:13,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190183220] [2019-10-15 03:08:13,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:08:13,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:13,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:08:13,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:13,629 INFO L87 Difference]: Start difference. First operand 868 states and 1337 transitions. Second operand 12 states. [2019-10-15 03:08:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:24,905 INFO L93 Difference]: Finished difference Result 2640 states and 4081 transitions. [2019-10-15 03:08:24,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 03:08:24,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-15 03:08:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:24,929 INFO L225 Difference]: With dead ends: 2640 [2019-10-15 03:08:24,929 INFO L226 Difference]: Without dead ends: 1814 [2019-10-15 03:08:24,939 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:08:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2019-10-15 03:08:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1755. [2019-10-15 03:08:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2019-10-15 03:08:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2691 transitions. [2019-10-15 03:08:25,123 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2691 transitions. Word has length 122 [2019-10-15 03:08:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:25,125 INFO L462 AbstractCegarLoop]: Abstraction has 1755 states and 2691 transitions. [2019-10-15 03:08:25,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:08:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2691 transitions. [2019-10-15 03:08:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 03:08:25,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:25,134 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:25,135 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash -221211321, now seen corresponding path program 1 times [2019-10-15 03:08:25,137 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:25,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423877460] [2019-10-15 03:08:25,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:25,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:25,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423877460] [2019-10-15 03:08:25,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:25,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:25,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215016174] [2019-10-15 03:08:25,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:25,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:25,479 INFO L87 Difference]: Start difference. First operand 1755 states and 2691 transitions. Second operand 4 states. [2019-10-15 03:08:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:28,172 INFO L93 Difference]: Finished difference Result 4500 states and 7052 transitions. [2019-10-15 03:08:28,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:28,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-15 03:08:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:28,193 INFO L225 Difference]: With dead ends: 4500 [2019-10-15 03:08:28,194 INFO L226 Difference]: Without dead ends: 2787 [2019-10-15 03:08:28,204 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 03:08:28,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2019-10-15 03:08:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2706. [2019-10-15 03:08:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2019-10-15 03:08:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4195 transitions. [2019-10-15 03:08:28,361 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4195 transitions. Word has length 123 [2019-10-15 03:08:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:28,363 INFO L462 AbstractCegarLoop]: Abstraction has 2706 states and 4195 transitions. [2019-10-15 03:08:28,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4195 transitions. [2019-10-15 03:08:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:08:28,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:28,370 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:28,370 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:28,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1730704982, now seen corresponding path program 1 times [2019-10-15 03:08:28,371 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:28,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207898013] [2019-10-15 03:08:28,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:28,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207898013] [2019-10-15 03:08:28,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:28,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:28,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533238684] [2019-10-15 03:08:28,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:28,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:28,584 INFO L87 Difference]: Start difference. First operand 2706 states and 4195 transitions. Second operand 4 states. [2019-10-15 03:08:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:31,119 INFO L93 Difference]: Finished difference Result 7378 states and 11816 transitions. [2019-10-15 03:08:31,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:31,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-15 03:08:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:31,167 INFO L225 Difference]: With dead ends: 7378 [2019-10-15 03:08:31,168 INFO L226 Difference]: Without dead ends: 4715 [2019-10-15 03:08:31,185 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 03:08:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2019-10-15 03:08:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4601. [2019-10-15 03:08:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2019-10-15 03:08:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 7266 transitions. [2019-10-15 03:08:31,499 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 7266 transitions. Word has length 124 [2019-10-15 03:08:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:31,501 INFO L462 AbstractCegarLoop]: Abstraction has 4601 states and 7266 transitions. [2019-10-15 03:08:31,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 7266 transitions. [2019-10-15 03:08:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:08:31,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:31,509 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-15 03:08:31,510 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2110572137, now seen corresponding path program 1 times [2019-10-15 03:08:31,513 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:31,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517667529] [2019-10-15 03:08:31,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:31,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:31,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:31,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517667529] [2019-10-15 03:08:31,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:31,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:31,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50800335] [2019-10-15 03:08:31,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:31,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:31,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:31,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:31,938 INFO L87 Difference]: Start difference. First operand 4601 states and 7266 transitions. Second operand 4 states. [2019-10-15 03:08:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:34,564 INFO L93 Difference]: Finished difference Result 13150 states and 21872 transitions. [2019-10-15 03:08:34,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:34,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-15 03:08:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:34,630 INFO L225 Difference]: With dead ends: 13150 [2019-10-15 03:08:34,630 INFO L226 Difference]: Without dead ends: 8594 [2019-10-15 03:08:34,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 03:08:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2019-10-15 03:08:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8415. [2019-10-15 03:08:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8415 states. [2019-10-15 03:08:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 13726 transitions. [2019-10-15 03:08:35,236 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 13726 transitions. Word has length 125 [2019-10-15 03:08:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:35,238 INFO L462 AbstractCegarLoop]: Abstraction has 8415 states and 13726 transitions. [2019-10-15 03:08:35,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 13726 transitions. [2019-10-15 03:08:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-15 03:08:35,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:35,243 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:35,243 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1001555960, now seen corresponding path program 1 times [2019-10-15 03:08:35,244 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:35,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126543782] [2019-10-15 03:08:35,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:35,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:35,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:35,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126543782] [2019-10-15 03:08:35,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:35,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:35,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448963862] [2019-10-15 03:08:35,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:35,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:35,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:35,476 INFO L87 Difference]: Start difference. First operand 8415 states and 13726 transitions. Second operand 4 states.