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_spec14_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:27,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:27,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:27,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:27,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:27,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:27,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:27,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:27,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:27,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:27,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:27,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:27,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:27,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:27,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:27,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:27,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:27,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:27,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:27,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:27,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:27,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:27,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:27,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:27,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:27,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:27,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:27,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:27,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:27,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:27,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:27,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:27,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:27,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:27,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:27,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:27,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:27,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:27,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:27,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:27,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:27,246 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 23:02:27,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:27,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:27,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:27,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:27,273 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:27,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:27,274 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:27,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:27,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:27,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:27,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:27,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:27,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:27,275 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:27,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:27,276 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:27,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:27,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:27,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:27,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:27,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:27,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:27,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:27,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:27,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:27,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:27,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:27,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:27,278 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 23:02:27,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:27,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:27,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:27,556 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:27,556 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:27,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-13 23:02:27,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cd222f4/272b2c21d13443db8a288127947af3d6/FLAGfe25a31fa [2019-10-13 23:02:28,285 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:28,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product31.cil.c [2019-10-13 23:02:28,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cd222f4/272b2c21d13443db8a288127947af3d6/FLAGfe25a31fa [2019-10-13 23:02:28,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14cd222f4/272b2c21d13443db8a288127947af3d6 [2019-10-13 23:02:28,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:28,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:28,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:28,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:28,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:28,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:28" (1/1) ... [2019-10-13 23:02:28,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ec9a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:28, skipping insertion in model container [2019-10-13 23:02:28,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:28" (1/1) ... [2019-10-13 23:02:28,480 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:28,566 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:29,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:29,276 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:29,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:29,488 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:29,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29 WrapperNode [2019-10-13 23:02:29,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:29,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:29,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:29,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:29,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (1/1) ... [2019-10-13 23:02:29,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:29,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:29,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:29,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:29,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (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 23:02:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:02:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:02:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:02:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:02:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:02:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:29,807 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:29,810 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:02:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:02:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:34,480 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:34,481 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:34,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:34 BoogieIcfgContainer [2019-10-13 23:02:34,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:34,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:34,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:34,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:34,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:28" (1/3) ... [2019-10-13 23:02:34,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:34, skipping insertion in model container [2019-10-13 23:02:34,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:29" (2/3) ... [2019-10-13 23:02:34,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715998c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:34, skipping insertion in model container [2019-10-13 23:02:34,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:34" (3/3) ... [2019-10-13 23:02:34,492 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2019-10-13 23:02:34,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:34,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:34,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:34,564 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:34,565 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:34,565 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:34,565 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:34,565 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:34,565 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:34,565 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:34,565 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:34,604 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states. [2019-10-13 23:02:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:02:34,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:34,637 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:34,639 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:34,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:34,645 INFO L82 PathProgramCache]: Analyzing trace with hash -2098909853, now seen corresponding path program 1 times [2019-10-13 23:02:34,654 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:34,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391063189] [2019-10-13 23:02:34,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:34,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:35,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391063189] [2019-10-13 23:02:35,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:35,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:35,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444718432] [2019-10-13 23:02:35,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:35,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:35,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:35,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:35,393 INFO L87 Difference]: Start difference. First operand 572 states. Second operand 7 states. [2019-10-13 23:02:36,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:36,973 INFO L93 Difference]: Finished difference Result 1029 states and 1503 transitions. [2019-10-13 23:02:36,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:36,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-13 23:02:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,015 INFO L225 Difference]: With dead ends: 1029 [2019-10-13 23:02:37,016 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 23:02:37,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 23:02:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 573. [2019-10-13 23:02:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-13 23:02:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 815 transitions. [2019-10-13 23:02:37,159 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 815 transitions. Word has length 110 [2019-10-13 23:02:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,160 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 815 transitions. [2019-10-13 23:02:37,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 815 transitions. [2019-10-13 23:02:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:37,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,174 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:37,174 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1562840757, now seen corresponding path program 1 times [2019-10-13 23:02:37,175 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436787200] [2019-10-13 23:02:37,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 23:02:37,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436787200] [2019-10-13 23:02:37,508 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:37,508 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:37,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101779301] [2019-10-13 23:02:37,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:37,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:37,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:37,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:37,522 INFO L87 Difference]: Start difference. First operand 573 states and 815 transitions. Second operand 5 states. [2019-10-13 23:02:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:37,589 INFO L93 Difference]: Finished difference Result 1121 states and 1609 transitions. [2019-10-13 23:02:37,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:37,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 23:02:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,595 INFO L225 Difference]: With dead ends: 1121 [2019-10-13 23:02:37,596 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 23:02:37,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 23:02:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-10-13 23:02:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-13 23:02:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 821 transitions. [2019-10-13 23:02:37,669 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 821 transitions. Word has length 150 [2019-10-13 23:02:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,670 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 821 transitions. [2019-10-13 23:02:37,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 821 transitions. [2019-10-13 23:02:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 23:02:37,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,679 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:37,679 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1474737883, now seen corresponding path program 1 times [2019-10-13 23:02:37,679 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928828679] [2019-10-13 23:02:37,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:37,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928828679] [2019-10-13 23:02:37,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155540381] [2019-10-13 23:02:37,976 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 23:02:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:38,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:38,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 23:02:38,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:38,891 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:38,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:02:38,891 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199330914] [2019-10-13 23:02:38,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:38,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:38,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:38,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:38,895 INFO L87 Difference]: Start difference. First operand 579 states and 821 transitions. Second operand 4 states. [2019-10-13 23:02:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:39,119 INFO L93 Difference]: Finished difference Result 1166 states and 1693 transitions. [2019-10-13 23:02:39,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:39,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-13 23:02:39,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:39,125 INFO L225 Difference]: With dead ends: 1166 [2019-10-13 23:02:39,126 INFO L226 Difference]: Without dead ends: 618 [2019-10-13 23:02:39,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-10-13 23:02:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2019-10-13 23:02:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-13 23:02:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 894 transitions. [2019-10-13 23:02:39,163 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 894 transitions. Word has length 159 [2019-10-13 23:02:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:39,164 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 894 transitions. [2019-10-13 23:02:39,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 894 transitions. [2019-10-13 23:02:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 23:02:39,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:39,171 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:02:39,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:39,377 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2112092363, now seen corresponding path program 1 times [2019-10-13 23:02:39,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:39,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30013708] [2019-10-13 23:02:39,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2019-10-13 23:02:39,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30013708] [2019-10-13 23:02:39,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388271445] [2019-10-13 23:02:39,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 3698 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:40,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2019-10-13 23:02:40,659 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2019-10-13 23:02:41,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:41,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-13 23:02:41,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541847249] [2019-10-13 23:02:41,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:41,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:41,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:41,076 INFO L87 Difference]: Start difference. First operand 618 states and 894 transitions. Second operand 4 states. [2019-10-13 23:02:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,299 INFO L93 Difference]: Finished difference Result 1244 states and 1838 transitions. [2019-10-13 23:02:41,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:41,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2019-10-13 23:02:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,305 INFO L225 Difference]: With dead ends: 1244 [2019-10-13 23:02:41,305 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 23:02:41,308 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:02:41,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 23:02:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 23:02:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 23:02:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 967 transitions. [2019-10-13 23:02:41,338 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 967 transitions. Word has length 286 [2019-10-13 23:02:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,339 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 967 transitions. [2019-10-13 23:02:41,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 967 transitions. [2019-10-13 23:02:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 23:02:41,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,345 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2019-10-13 23:02:41,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:41,554 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,555 INFO L82 PathProgramCache]: Analyzing trace with hash -761072811, now seen corresponding path program 1 times [2019-10-13 23:02:41,555 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786440147] [2019-10-13 23:02:41,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-10-13 23:02:41,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786440147] [2019-10-13 23:02:41,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611960061] [2019-10-13 23:02:41,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:42,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-13 23:02:42,476 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2019-10-13 23:02:42,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:42,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:42,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022160699] [2019-10-13 23:02:42,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:42,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:42,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:42,705 INFO L87 Difference]: Start difference. First operand 657 states and 967 transitions. Second operand 4 states. [2019-10-13 23:02:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:42,924 INFO L93 Difference]: Finished difference Result 1322 states and 1983 transitions. [2019-10-13 23:02:42,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:42,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2019-10-13 23:02:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:42,930 INFO L225 Difference]: With dead ends: 1322 [2019-10-13 23:02:42,930 INFO L226 Difference]: Without dead ends: 696 [2019-10-13 23:02:42,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-13 23:02:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-10-13 23:02:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-13 23:02:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1040 transitions. [2019-10-13 23:02:42,964 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1040 transitions. Word has length 229 [2019-10-13 23:02:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:42,965 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 1040 transitions. [2019-10-13 23:02:42,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1040 transitions. [2019-10-13 23:02:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 23:02:42,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:42,971 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2019-10-13 23:02:43,178 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:43,179 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:43,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1917654357, now seen corresponding path program 1 times [2019-10-13 23:02:43,180 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:43,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977601155] [2019-10-13 23:02:43,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:43,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2019-10-13 23:02:43,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977601155] [2019-10-13 23:02:43,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360581216] [2019-10-13 23:02:43,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:44,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 3323 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:44,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 23:02:44,714 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-10-13 23:02:44,982 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:44,982 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 4] total 15 [2019-10-13 23:02:44,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134022248] [2019-10-13 23:02:44,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:44,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:02:44,984 INFO L87 Difference]: Start difference. First operand 696 states and 1040 transitions. Second operand 4 states. [2019-10-13 23:02:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:45,168 INFO L93 Difference]: Finished difference Result 1400 states and 2128 transitions. [2019-10-13 23:02:45,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:45,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2019-10-13 23:02:45,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:45,174 INFO L225 Difference]: With dead ends: 1400 [2019-10-13 23:02:45,174 INFO L226 Difference]: Without dead ends: 735 [2019-10-13 23:02:45,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:02:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-10-13 23:02:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2019-10-13 23:02:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-10-13 23:02:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1113 transitions. [2019-10-13 23:02:45,206 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1113 transitions. Word has length 232 [2019-10-13 23:02:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:45,206 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 1113 transitions. [2019-10-13 23:02:45,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1113 transitions. [2019-10-13 23:02:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 23:02:45,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:45,214 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 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] [2019-10-13 23:02:45,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:45,430 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -772632551, now seen corresponding path program 1 times [2019-10-13 23:02:45,430 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:45,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895476999] [2019-10-13 23:02:45,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:45,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-10-13 23:02:45,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895476999] [2019-10-13 23:02:45,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342210651] [2019-10-13 23:02:45,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:46,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 23:02:46,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-13 23:02:46,536 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-10-13 23:02:46,846 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:46,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [12] total 19 [2019-10-13 23:02:46,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542548411] [2019-10-13 23:02:46,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:46,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:46,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:46,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:02:46,849 INFO L87 Difference]: Start difference. First operand 735 states and 1113 transitions. Second operand 9 states. [2019-10-13 23:02:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:50,359 INFO L93 Difference]: Finished difference Result 2064 states and 3185 transitions. [2019-10-13 23:02:50,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:50,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-10-13 23:02:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:50,366 INFO L225 Difference]: With dead ends: 2064 [2019-10-13 23:02:50,366 INFO L226 Difference]: Without dead ends: 1360 [2019-10-13 23:02:50,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:02:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2019-10-13 23:02:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1321. [2019-10-13 23:02:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2019-10-13 23:02:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 2045 transitions. [2019-10-13 23:02:50,430 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 2045 transitions. Word has length 234 [2019-10-13 23:02:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:50,430 INFO L462 AbstractCegarLoop]: Abstraction has 1321 states and 2045 transitions. [2019-10-13 23:02:50,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 2045 transitions. [2019-10-13 23:02:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:02:50,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:50,437 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 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] [2019-10-13 23:02:50,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:50,644 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash 441714739, now seen corresponding path program 1 times [2019-10-13 23:02:50,646 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:50,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758442601] [2019-10-13 23:02:50,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:50,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:50,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:50,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758442601] [2019-10-13 23:02:50,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361175409] [2019-10-13 23:02:50,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:51,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-13 23:02:51,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 23:02:51,569 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:51,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:51,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:51,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:51,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 23:02:51,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857121544] [2019-10-13 23:02:51,889 INFO L162 IcfgInterpreter]: Started Sifa with 135 locations of interest [2019-10-13 23:02:51,889 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:02:51,895 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:02:51,902 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:02:51,903 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs