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_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:05:45,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:05:45,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:05:45,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:05:45,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:05:45,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:05:45,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:05:45,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:05:45,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:05:45,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:05:45,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:05:45,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:05:45,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:05:45,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:05:45,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:05:45,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:05:45,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:05:46,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:05:46,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:05:46,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:05:46,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:05:46,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:05:46,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:05:46,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:05:46,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:05:46,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:05:46,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:05:46,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:05:46,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:05:46,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:05:46,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:05:46,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:05:46,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:05:46,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:05:46,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:05:46,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:05:46,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:05:46,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:05:46,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:05:46,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:05:46,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:05:46,035 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 23:05:46,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:05:46,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:05:46,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:05:46,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:05:46,056 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:05:46,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:05:46,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:05:46,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:05:46,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:05:46,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:05:46,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:05:46,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:05:46,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:05:46,058 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:05:46,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:05:46,059 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:05:46,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:05:46,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:05:46,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:05:46,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:05:46,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:05:46,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:05:46,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:05:46,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:05:46,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:05:46,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:05:46,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:05:46,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:05:46,061 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 23:05:46,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:05:46,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:05:46,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:05:46,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:05:46,358 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:05:46,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-13 23:05:46,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c55f7953/325195f8b8a74edc940e1244472abba4/FLAG893a6b33b [2019-10-13 23:05:47,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:05:47,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-13 23:05:47,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c55f7953/325195f8b8a74edc940e1244472abba4/FLAG893a6b33b [2019-10-13 23:05:47,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c55f7953/325195f8b8a74edc940e1244472abba4 [2019-10-13 23:05:47,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:05:47,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:05:47,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:47,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:05:47,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:05:47,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:47" (1/1) ... [2019-10-13 23:05:47,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aed49ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:47, skipping insertion in model container [2019-10-13 23:05:47,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:47" (1/1) ... [2019-10-13 23:05:47,196 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:05:47,275 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:05:48,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:48,049 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:05:48,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:05:48,206 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:05:48,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48 WrapperNode [2019-10-13 23:05:48,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:05:48,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:05:48,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:05:48,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:05:48,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (1/1) ... [2019-10-13 23:05:48,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:05:48,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:05:48,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:05:48,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:05:48,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (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 23:05:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:05:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:05:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:05:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:05:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:05:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:05:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:05:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:05:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:05:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:05:48,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:05:48,485 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:05:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:05:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:05:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:05:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:05:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:05:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:05:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:05:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:05:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:05:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:05:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:05:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:05:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:05:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:05:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:05:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:05:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:05:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:05:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:05:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:05:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:05:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:05:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:05:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:05:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:05:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:05:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:05:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:05:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:05:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:05:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:05:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:05:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:05:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:05:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:05:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:05:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:05:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:05:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:05:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:05:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:05:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:05:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:05:48,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:05:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:05:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:05:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:05:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:05:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:05:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:05:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:05:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:05:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:05:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:05:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:05:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:05:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:05:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:05:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:05:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:05:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:05:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:05:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:05:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:05:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:05:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:05:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:05:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:05:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:05:48,513 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:05:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:05:48,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:05:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:05:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:05:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:05:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:05:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:05:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:05:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:05:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:05:48,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:05:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:05:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:05:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:05:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:05:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:05:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:05:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:05:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:05:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:05:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:05:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:05:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:05:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:05:48,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:05:53,535 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:05:53,536 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:05:53,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:53 BoogieIcfgContainer [2019-10-13 23:05:53,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:05:53,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:05:53,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:05:53,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:05:53,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:47" (1/3) ... [2019-10-13 23:05:53,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e61f455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:53, skipping insertion in model container [2019-10-13 23:05:53,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:48" (2/3) ... [2019-10-13 23:05:53,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e61f455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:53, skipping insertion in model container [2019-10-13 23:05:53,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:53" (3/3) ... [2019-10-13 23:05:53,546 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2019-10-13 23:05:53,556 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:05:53,564 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:05:53,576 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:05:53,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:05:53,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:05:53,607 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:05:53,607 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:05:53,607 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:05:53,607 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:05:53,607 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:05:53,607 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:05:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2019-10-13 23:05:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:05:53,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:53,650 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] [2019-10-13 23:05:53,652 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash -834099698, now seen corresponding path program 1 times [2019-10-13 23:05:53,667 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:53,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328825069] [2019-10-13 23:05:53,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:53,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:54,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328825069] [2019-10-13 23:05:54,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:54,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:05:54,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625597380] [2019-10-13 23:05:54,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:05:54,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:54,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:05:54,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:05:54,207 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 2 states. [2019-10-13 23:05:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:54,290 INFO L93 Difference]: Finished difference Result 504 states and 739 transitions. [2019-10-13 23:05:54,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:05:54,292 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:05:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:54,333 INFO L225 Difference]: With dead ends: 504 [2019-10-13 23:05:54,333 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 23:05:54,339 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 23:05:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 23:05:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-13 23:05:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-13 23:05:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 688 transitions. [2019-10-13 23:05:54,482 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 688 transitions. Word has length 74 [2019-10-13 23:05:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:54,484 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 688 transitions. [2019-10-13 23:05:54,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:05:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 688 transitions. [2019-10-13 23:05:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:05:54,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:54,490 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] [2019-10-13 23:05:54,490 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:54,491 INFO L82 PathProgramCache]: Analyzing trace with hash 201643010, now seen corresponding path program 1 times [2019-10-13 23:05:54,491 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:54,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91893293] [2019-10-13 23:05:54,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:54,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:54,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:54,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91893293] [2019-10-13 23:05:54,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:54,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:54,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470742903] [2019-10-13 23:05:54,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:54,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:54,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:54,759 INFO L87 Difference]: Start difference. First operand 470 states and 688 transitions. Second operand 3 states. [2019-10-13 23:05:54,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:54,903 INFO L93 Difference]: Finished difference Result 1301 states and 1956 transitions. [2019-10-13 23:05:54,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:54,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-13 23:05:54,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:54,913 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 23:05:54,913 INFO L226 Difference]: Without dead ends: 873 [2019-10-13 23:05:54,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-10-13 23:05:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 856. [2019-10-13 23:05:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2019-10-13 23:05:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1283 transitions. [2019-10-13 23:05:55,066 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1283 transitions. Word has length 75 [2019-10-13 23:05:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:55,069 INFO L462 AbstractCegarLoop]: Abstraction has 856 states and 1283 transitions. [2019-10-13 23:05:55,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1283 transitions. [2019-10-13 23:05:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 23:05:55,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:55,079 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, 1] [2019-10-13 23:05:55,079 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1954770670, now seen corresponding path program 1 times [2019-10-13 23:05:55,080 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:55,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258765569] [2019-10-13 23:05:55,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:55,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258765569] [2019-10-13 23:05:55,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:55,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:55,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947756910] [2019-10-13 23:05:55,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:55,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:55,299 INFO L87 Difference]: Start difference. First operand 856 states and 1283 transitions. Second operand 3 states. [2019-10-13 23:05:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:55,412 INFO L93 Difference]: Finished difference Result 2460 states and 3754 transitions. [2019-10-13 23:05:55,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:55,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-13 23:05:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:55,428 INFO L225 Difference]: With dead ends: 2460 [2019-10-13 23:05:55,428 INFO L226 Difference]: Without dead ends: 1647 [2019-10-13 23:05:55,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2019-10-13 23:05:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1629. [2019-10-13 23:05:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2019-10-13 23:05:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2482 transitions. [2019-10-13 23:05:55,521 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2482 transitions. Word has length 76 [2019-10-13 23:05:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:55,522 INFO L462 AbstractCegarLoop]: Abstraction has 1629 states and 2482 transitions. [2019-10-13 23:05:55,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2482 transitions. [2019-10-13 23:05:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:05:55,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:55,525 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, 1, 1] [2019-10-13 23:05:55,525 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 467157188, now seen corresponding path program 1 times [2019-10-13 23:05:55,525 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:55,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317694817] [2019-10-13 23:05:55,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:55,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:55,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317694817] [2019-10-13 23:05:55,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:55,687 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:55,687 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367551570] [2019-10-13 23:05:55,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:55,689 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:55,690 INFO L87 Difference]: Start difference. First operand 1629 states and 2482 transitions. Second operand 3 states. [2019-10-13 23:05:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:55,833 INFO L93 Difference]: Finished difference Result 4779 states and 7392 transitions. [2019-10-13 23:05:55,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:55,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-13 23:05:55,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:55,856 INFO L225 Difference]: With dead ends: 4779 [2019-10-13 23:05:55,856 INFO L226 Difference]: Without dead ends: 3195 [2019-10-13 23:05:55,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2019-10-13 23:05:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2019-10-13 23:05:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2019-10-13 23:05:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4910 transitions. [2019-10-13 23:05:56,090 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4910 transitions. Word has length 77 [2019-10-13 23:05:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:56,090 INFO L462 AbstractCegarLoop]: Abstraction has 3176 states and 4910 transitions. [2019-10-13 23:05:56,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4910 transitions. [2019-10-13 23:05:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:05:56,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:56,092 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, 1, 1, 1] [2019-10-13 23:05:56,092 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:56,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1595783408, now seen corresponding path program 1 times [2019-10-13 23:05:56,093 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:56,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79654284] [2019-10-13 23:05:56,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:56,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79654284] [2019-10-13 23:05:56,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:56,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:56,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721261271] [2019-10-13 23:05:56,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:56,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:56,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:56,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:56,212 INFO L87 Difference]: Start difference. First operand 3176 states and 4910 transitions. Second operand 3 states. [2019-10-13 23:05:56,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:56,429 INFO L93 Difference]: Finished difference Result 9418 states and 14821 transitions. [2019-10-13 23:05:56,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:56,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2019-10-13 23:05:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:56,477 INFO L225 Difference]: With dead ends: 9418 [2019-10-13 23:05:56,477 INFO L226 Difference]: Without dead ends: 6291 [2019-10-13 23:05:56,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2019-10-13 23:05:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6271. [2019-10-13 23:05:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6271 states. [2019-10-13 23:05:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9878 transitions. [2019-10-13 23:05:56,906 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9878 transitions. Word has length 78 [2019-10-13 23:05:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:56,906 INFO L462 AbstractCegarLoop]: Abstraction has 6271 states and 9878 transitions. [2019-10-13 23:05:56,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9878 transitions. [2019-10-13 23:05:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:05:56,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:56,913 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, 1, 1, 1, 1] [2019-10-13 23:05:56,914 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2071505530, now seen corresponding path program 1 times [2019-10-13 23:05:56,914 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:56,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95297817] [2019-10-13 23:05:56,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:56,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:57,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95297817] [2019-10-13 23:05:57,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:57,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:57,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455615306] [2019-10-13 23:05:57,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:57,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:57,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:57,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:57,029 INFO L87 Difference]: Start difference. First operand 6271 states and 9878 transitions. Second operand 3 states. [2019-10-13 23:05:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:57,232 INFO L93 Difference]: Finished difference Result 6679 states and 10543 transitions. [2019-10-13 23:05:57,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:57,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2019-10-13 23:05:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:57,293 INFO L225 Difference]: With dead ends: 6679 [2019-10-13 23:05:57,293 INFO L226 Difference]: Without dead ends: 6666 [2019-10-13 23:05:57,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2019-10-13 23:05:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6651. [2019-10-13 23:05:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6651 states. [2019-10-13 23:05:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6651 states to 6651 states and 10506 transitions. [2019-10-13 23:05:57,623 INFO L78 Accepts]: Start accepts. Automaton has 6651 states and 10506 transitions. Word has length 79 [2019-10-13 23:05:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:57,623 INFO L462 AbstractCegarLoop]: Abstraction has 6651 states and 10506 transitions. [2019-10-13 23:05:57,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6651 states and 10506 transitions. [2019-10-13 23:05:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 23:05:57,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:57,643 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:57,644 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1116033143, now seen corresponding path program 1 times [2019-10-13 23:05:57,644 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:57,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101103331] [2019-10-13 23:05:57,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:57,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:57,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-10-13 23:05:58,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101103331] [2019-10-13 23:05:58,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280059386] [2019-10-13 23:05:58,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:59,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 4079 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:05:59,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-13 23:05:59,777 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:06:00,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:06:00,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:06:00,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:06:00,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:06:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-13 23:06:00,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802495461] [2019-10-13 23:06:00,570 INFO L162 IcfgInterpreter]: Started Sifa with 186 locations of interest [2019-10-13 23:06:00,571 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:06:00,578 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:06:00,586 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:06:00,586 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs