./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 65bb5f28ce2302db3c80c9935e6eed9106d6fbf57e5569c324ee02f0d52a42b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 02:09:39,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 02:09:39,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 02:09:39,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 02:09:39,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 02:09:39,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 02:09:39,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 02:09:39,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 02:09:39,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 02:09:39,356 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 02:09:39,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 02:09:39,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 02:09:39,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 02:09:39,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 02:09:39,360 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 02:09:39,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 02:09:39,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 02:09:39,361 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 02:09:39,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 02:09:39,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 02:09:39,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 02:09:39,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 02:09:39,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 02:09:39,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 02:09:39,367 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 02:09:39,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 02:09:39,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 02:09:39,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 02:09:39,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 02:09:39,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 02:09:39,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 02:09:39,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 02:09:39,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 02:09:39,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 02:09:39,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 02:09:39,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 02:09:39,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 02:09:39,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 02:09:39,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 02:09:39,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 02:09:39,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 02:09:39,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 02:09:39,375 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bb5f28ce2302db3c80c9935e6eed9106d6fbf57e5569c324ee02f0d52a42b4 [2024-10-13 02:09:39,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 02:09:39,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 02:09:39,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 02:09:39,655 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 02:09:39,656 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 02:09:39,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i [2024-10-13 02:09:41,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 02:09:41,291 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 02:09:41,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i [2024-10-13 02:09:41,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8eb12ef/f73fa8db3dd94d848e16794ec35ea72a/FLAG43c699141 [2024-10-13 02:09:41,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8eb12ef/f73fa8db3dd94d848e16794ec35ea72a [2024-10-13 02:09:41,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 02:09:41,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 02:09:41,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 02:09:41,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 02:09:41,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 02:09:41,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6934bc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41, skipping insertion in model container [2024-10-13 02:09:41,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 02:09:41,540 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i[919,932] [2024-10-13 02:09:41,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 02:09:41,616 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 02:09:41,629 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i[919,932] [2024-10-13 02:09:41,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 02:09:41,689 INFO L204 MainTranslator]: Completed translation [2024-10-13 02:09:41,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41 WrapperNode [2024-10-13 02:09:41,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 02:09:41,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 02:09:41,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 02:09:41,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 02:09:41,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,771 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 183 [2024-10-13 02:09:41,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 02:09:41,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 02:09:41,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 02:09:41,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 02:09:41,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,822 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 02:09:41,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 02:09:41,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 02:09:41,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 02:09:41,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 02:09:41,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (1/1) ... [2024-10-13 02:09:41,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 02:09:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 02:09:41,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 02:09:41,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 02:09:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 02:09:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-13 02:09:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-13 02:09:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 02:09:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 02:09:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 02:09:42,025 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 02:09:42,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 02:09:42,401 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-10-13 02:09:42,403 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 02:09:42,451 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 02:09:42,470 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 02:09:42,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:09:42 BoogieIcfgContainer [2024-10-13 02:09:42,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 02:09:42,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 02:09:42,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 02:09:42,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 02:09:42,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:09:41" (1/3) ... [2024-10-13 02:09:42,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d78531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:09:42, skipping insertion in model container [2024-10-13 02:09:42,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:09:41" (2/3) ... [2024-10-13 02:09:42,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d78531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:09:42, skipping insertion in model container [2024-10-13 02:09:42,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:09:42" (3/3) ... [2024-10-13 02:09:42,483 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-41.i [2024-10-13 02:09:42,512 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 02:09:42,513 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 02:09:42,573 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 02:09:42,579 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@650cc614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 02:09:42,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 02:09:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 50 states have (on average 1.54) internal successors, (77), 51 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-13 02:09:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-13 02:09:42,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 02:09:42,601 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 02:09:42,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 02:09:42,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 02:09:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -392106809, now seen corresponding path program 1 times [2024-10-13 02:09:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 02:09:42,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300026842] [2024-10-13 02:09:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 02:09:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 02:09:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 02:09:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 02:09:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-13 02:09:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-13 02:09:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-13 02:09:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-13 02:09:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-13 02:09:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-13 02:09:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-13 02:09:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-13 02:09:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-13 02:09:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-13 02:09:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-13 02:09:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-13 02:09:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-13 02:09:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-13 02:09:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-13 02:09:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-13 02:09:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-13 02:09:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-13 02:09:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 02:09:43,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300026842] [2024-10-13 02:09:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300026842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 02:09:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 02:09:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 02:09:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067476305] [2024-10-13 02:09:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 02:09:43,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 02:09:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 02:09:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 02:09:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 02:09:43,611 INFO L87 Difference]: Start difference. First operand has 72 states, 50 states have (on average 1.54) internal successors, (77), 51 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-13 02:09:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 02:09:43,740 INFO L93 Difference]: Finished difference Result 177 states and 308 transitions. [2024-10-13 02:09:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 02:09:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 130 [2024-10-13 02:09:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 02:09:43,755 INFO L225 Difference]: With dead ends: 177 [2024-10-13 02:09:43,756 INFO L226 Difference]: Without dead ends: 106 [2024-10-13 02:09:43,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 02:09:43,778 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 53 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 02:09:43,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 273 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 02:09:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-13 02:09:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2024-10-13 02:09:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 80 states have internal predecessors, (116), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 02:09:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 158 transitions. [2024-10-13 02:09:43,878 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 158 transitions. Word has length 130 [2024-10-13 02:09:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 02:09:43,879 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 158 transitions. [2024-10-13 02:09:43,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-10-13 02:09:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 158 transitions. [2024-10-13 02:09:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-13 02:09:43,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 02:09:43,885 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 02:09:43,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 02:09:43,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 02:09:43,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 02:09:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1296836933, now seen corresponding path program 1 times [2024-10-13 02:09:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 02:09:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001375004] [2024-10-13 02:09:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 02:09:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 02:09:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 02:09:44,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874184963] [2024-10-13 02:09:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 02:09:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 02:09:44,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 02:09:44,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 02:09:44,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 02:09:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:09:44,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 02:09:44,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 02:09:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 348 proven. 21 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-13 02:09:44,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 02:10:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 02:10:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001375004] [2024-10-13 02:10:22,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 02:10:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874184963] [2024-10-13 02:10:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874184963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 02:10:22,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-13 02:10:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-13 02:10:22,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707028158] [2024-10-13 02:10:22,906 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-13 02:10:22,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 02:10:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 02:10:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 02:10:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=123, Unknown=8, NotChecked=0, Total=182 [2024-10-13 02:10:22,910 INFO L87 Difference]: Start difference. First operand 103 states and 158 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-13 02:10:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 02:10:30,473 INFO L93 Difference]: Finished difference Result 294 states and 429 transitions. [2024-10-13 02:10:30,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 02:10:30,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 130 [2024-10-13 02:10:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 02:10:30,479 INFO L225 Difference]: With dead ends: 294 [2024-10-13 02:10:30,479 INFO L226 Difference]: Without dead ends: 192 [2024-10-13 02:10:30,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=215, Invalid=533, Unknown=8, NotChecked=0, Total=756 [2024-10-13 02:10:30,482 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 133 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-13 02:10:30,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 445 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-13 02:10:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-13 02:10:30,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 144. [2024-10-13 02:10:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.3333333333333333) internal successors, (140), 107 states have internal predecessors, (140), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-13 02:10:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 204 transitions. [2024-10-13 02:10:30,513 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 204 transitions. Word has length 130 [2024-10-13 02:10:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 02:10:30,514 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 204 transitions. [2024-10-13 02:10:30,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-10-13 02:10:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 204 transitions. [2024-10-13 02:10:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-13 02:10:30,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 02:10:30,520 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 02:10:30,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 02:10:30,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 02:10:30,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 02:10:30,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 02:10:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1976895303, now seen corresponding path program 1 times [2024-10-13 02:10:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 02:10:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821713262] [2024-10-13 02:10:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 02:10:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 02:10:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 02:10:30,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992664640] [2024-10-13 02:10:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 02:10:30,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 02:10:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 02:10:30,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 02:10:30,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 02:10:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 02:10:31,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 02:10:31,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 02:10:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 348 proven. 21 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-13 02:10:33,810 INFO L311 TraceCheckSpWp]: Computing backward predicates...