./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/Dubois-080.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/xcsp/Dubois-080.c -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 a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:23:10,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:23:10,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:23:10,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:23:10,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:23:10,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:23:10,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:23:10,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:23:10,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:23:10,701 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:23:10,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:23:10,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:23:10,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:23:10,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:23:10,705 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:23:10,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:23:10,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:23:10,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:23:10,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:23:10,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:23:10,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:23:10,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:23:10,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:23:10,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:23:10,712 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:23:10,712 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:23:10,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:23:10,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:23:10,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:23:10,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:23:10,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:23:10,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:23:10,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:23:10,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:23:10,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:23:10,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:23:10,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:23:10,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:23:10,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:23:10,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:23:10,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:23:10,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:23:10,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd [2024-11-18 15:23:10,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:23:11,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:23:11,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:23:11,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:23:11,018 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:23:11,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/Dubois-080.c [2024-11-18 15:23:12,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:23:12,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:23:12,702 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-080.c [2024-11-18 15:23:12,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d696dbe/1b9247c84cef45fd9f69644b18bc6a39/FLAG497eb3f9d [2024-11-18 15:23:12,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d696dbe/1b9247c84cef45fd9f69644b18bc6a39 [2024-11-18 15:23:12,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:23:12,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:23:12,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:23:12,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:23:12,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:23:12,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:12" (1/1) ... [2024-11-18 15:23:12,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93fd1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:12, skipping insertion in model container [2024-11-18 15:23:12,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:12" (1/1) ... [2024-11-18 15:23:12,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:23:13,444 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-18 15:23:13,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:23:13,503 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:23:13,674 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-18 15:23:13,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:23:13,739 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:23:13,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13 WrapperNode [2024-11-18 15:23:13,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:23:13,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:23:13,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:23:13,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:23:13,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:13,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,058 INFO L138 Inliner]: procedures = 13, calls = 647, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15936 [2024-11-18 15:23:15,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:23:15,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:23:15,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:23:15,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:23:15,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,426 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]. [2024-11-18 15:23:15,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:15,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:16,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:16,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:16,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:16,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:23:16,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:23:16,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:23:16,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:23:16,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (1/1) ... [2024-11-18 15:23:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:23:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:16,256 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) [2024-11-18 15:23:16,260 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 [2024-11-18 15:23:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:23:16,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:23:16,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:23:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:23:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-18 15:23:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-18 15:23:16,779 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:23:16,781 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:23:37,353 INFO L? ?]: Removed 5525 outVars from TransFormulas that were not future-live. [2024-11-18 15:23:37,354 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:23:37,444 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:23:37,444 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:23:37,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:37 BoogieIcfgContainer [2024-11-18 15:23:37,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:23:37,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:23:37,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:23:37,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:23:37,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:23:12" (1/3) ... [2024-11-18 15:23:37,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c5b546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:37, skipping insertion in model container [2024-11-18 15:23:37,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:13" (2/3) ... [2024-11-18 15:23:37,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c5b546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:37, skipping insertion in model container [2024-11-18 15:23:37,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:37" (3/3) ... [2024-11-18 15:23:37,454 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-080.c [2024-11-18 15:23:37,469 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:23:37,469 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:23:37,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:23:37,681 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;@781b1679, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:23:37,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:23:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 6331 states, 5688 states have (on average 1.619198312236287) internal successors, (9210), 5689 states have internal predecessors, (9210), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-18 15:23:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5364 [2024-11-18 15:23:38,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:38,186 INFO L215 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:38,187 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:38,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1158448456, now seen corresponding path program 1 times [2024-11-18 15:23:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512686194] [2024-11-18 15:23:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 0 proven. 1278 refuted. 0 times theorem prover too weak. 816642 trivial. 0 not checked. [2024-11-18 15:23:43,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:43,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512686194] [2024-11-18 15:23:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512686194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545976239] [2024-11-18 15:23:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:43,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:43,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:43,736 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) [2024-11-18 15:23:43,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:23:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:46,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 15:23:46,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1278 proven. 0 refuted. 0 times theorem prover too weak. 816642 trivial. 0 not checked. [2024-11-18 15:23:46,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545976239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:46,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:46,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 15:23:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507002510] [2024-11-18 15:23:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:23:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:23:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:46,581 INFO L87 Difference]: Start difference. First operand has 6331 states, 5688 states have (on average 1.619198312236287) internal successors, (9210), 5689 states have internal predecessors, (9210), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) Second operand has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:23:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:46,844 INFO L93 Difference]: Finished difference Result 12656 states and 21614 transitions. [2024-11-18 15:23:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:23:46,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5363 [2024-11-18 15:23:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:46,911 INFO L225 Difference]: With dead ends: 12656 [2024-11-18 15:23:46,912 INFO L226 Difference]: Without dead ends: 6328 [2024-11-18 15:23:46,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5364 GetRequests, 5364 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:46,944 INFO L432 NwaCegarLoop]: 10486 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10486 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:46,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10486 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2024-11-18 15:23:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6328. [2024-11-18 15:23:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 5686 states have (on average 1.6190643686246922) internal successors, (9206), 5686 states have internal predecessors, (9206), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-18 15:23:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 10486 transitions. [2024-11-18 15:23:47,603 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 10486 transitions. Word has length 5363 [2024-11-18 15:23:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:47,606 INFO L471 AbstractCegarLoop]: Abstraction has 6328 states and 10486 transitions. [2024-11-18 15:23:47,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1084.0) internal successors, (2168), 2 states have internal predecessors, (2168), 2 states have call successors, (640), 2 states have call predecessors, (640), 1 states have return successors, (640), 1 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:23:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 10486 transitions. [2024-11-18 15:23:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5364 [2024-11-18 15:23:48,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:48,058 INFO L215 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:48,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:23:48,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:23:48,260 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:48,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1373673800, now seen corresponding path program 1 times [2024-11-18 15:23:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:48,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357442867] [2024-11-18 15:23:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:48,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-18 15:23:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357442867] [2024-11-18 15:23:59,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357442867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:59,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276165747] [2024-11-18 15:23:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:59,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:59,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:59,018 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) [2024-11-18 15:23:59,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:24:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:01,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 11706 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 15:24:01,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1917 proven. 0 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-18 15:24:01,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276165747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:01,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:01,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-18 15:24:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657370386] [2024-11-18 15:24:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:01,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:24:01,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:24:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:01,762 INFO L87 Difference]: Start difference. First operand 6328 states and 10486 transitions. Second operand has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:24:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:05,340 INFO L93 Difference]: Finished difference Result 6340 states and 10500 transitions. [2024-11-18 15:24:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:24:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5363 [2024-11-18 15:24:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:05,379 INFO L225 Difference]: With dead ends: 6340 [2024-11-18 15:24:05,380 INFO L226 Difference]: Without dead ends: 6330 [2024-11-18 15:24:05,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5368 GetRequests, 5362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:05,385 INFO L432 NwaCegarLoop]: 9842 mSDtfsCounter, 1 mSDsluCounter, 38075 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47917 SdHoareTripleChecker+Invalid, 4510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:05,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47917 Invalid, 4510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-18 15:24:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2024-11-18 15:24:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 6330. [2024-11-18 15:24:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 5688 states have (on average 1.6188466947960618) internal successors, (9208), 5688 states have internal predecessors, (9208), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-18 15:24:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 10488 transitions. [2024-11-18 15:24:05,707 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 10488 transitions. Word has length 5363 [2024-11-18 15:24:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:05,725 INFO L471 AbstractCegarLoop]: Abstraction has 6330 states and 10488 transitions. [2024-11-18 15:24:05,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 433.8) internal successors, (2169), 6 states have internal predecessors, (2169), 2 states have call successors, (640), 1 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:24:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 10488 transitions. [2024-11-18 15:24:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5365 [2024-11-18 15:24:05,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:24:05,910 INFO L215 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:24:05,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:24:06,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 15:24:06,111 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:24:06,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:24:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash 280795830, now seen corresponding path program 1 times [2024-11-18 15:24:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:24:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63155074] [2024-11-18 15:24:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:06,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:24:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 1440 proven. 477 refuted. 0 times theorem prover too weak. 816003 trivial. 0 not checked. [2024-11-18 15:24:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:24:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63155074] [2024-11-18 15:24:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63155074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:24:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276937362] [2024-11-18 15:24:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:13,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:24:13,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:24:13,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:24:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:15,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 11709 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:24:15,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 817920 backedges. 2556 proven. 0 refuted. 0 times theorem prover too weak. 815364 trivial. 0 not checked. [2024-11-18 15:24:15,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276937362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 15:24:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96454897] [2024-11-18 15:24:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:24:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:24:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:15,955 INFO L87 Difference]: Start difference. First operand 6330 states and 10488 transitions. Second operand has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:24:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:16,238 INFO L93 Difference]: Finished difference Result 6360 states and 10530 transitions. [2024-11-18 15:24:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:24:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) Word has length 5364 [2024-11-18 15:24:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:16,278 INFO L225 Difference]: With dead ends: 6360 [2024-11-18 15:24:16,278 INFO L226 Difference]: Without dead ends: 6339 [2024-11-18 15:24:16,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5369 GetRequests, 5363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:16,285 INFO L432 NwaCegarLoop]: 10482 mSDtfsCounter, 9 mSDsluCounter, 20951 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31433 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:16,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31433 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:24:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2024-11-18 15:24:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6339. [2024-11-18 15:24:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 5697 states have (on average 1.618571177812884) internal successors, (9221), 5697 states have internal predecessors, (9221), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-18 15:24:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 10501 transitions. [2024-11-18 15:24:16,743 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 10501 transitions. Word has length 5364 [2024-11-18 15:24:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:16,752 INFO L471 AbstractCegarLoop]: Abstraction has 6339 states and 10501 transitions. [2024-11-18 15:24:16,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 542.5) internal successors, (2170), 4 states have internal predecessors, (2170), 2 states have call successors, (640), 2 states have call predecessors, (640), 2 states have return successors, (640), 2 states have call predecessors, (640), 2 states have call successors, (640) [2024-11-18 15:24:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 10501 transitions. [2024-11-18 15:24:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5365 [2024-11-18 15:24:17,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:24:17,026 INFO L215 NwaCegarLoop]: trace histogram [640, 640, 640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:24:17,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:24:17,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:17,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:24:17,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:24:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1149127280, now seen corresponding path program 1 times [2024-11-18 15:24:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:24:17,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114166902] [2024-11-18 15:24:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:24:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat