./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/Dubois-095.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/xcsp/Dubois-095.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 e238c288867a9be4c6a7e11a8e08267ab29e2230e0f2e873e7e484db35df0c2f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:09:33,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:09:33,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:09:33,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:09:33,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:09:33,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:09:33,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:09:33,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:09:33,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:09:33,420 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:09:33,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:09:33,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:09:33,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:09:33,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:09:33,424 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:09:33,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:09:33,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:09:33,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:09:33,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:09:33,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:09:33,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:09:33,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:09:33,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:09:33,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:09:33,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:09:33,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:09:33,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:09:33,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:09:33,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:09:33,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:09:33,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:09:33,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:09:33,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:09:33,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:09:33,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:09:33,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:09:33,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:09:33,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:09:33,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:09:33,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:09:33,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:09:33,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:09:33,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e238c288867a9be4c6a7e11a8e08267ab29e2230e0f2e873e7e484db35df0c2f [2024-11-22 03:09:33,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:09:33,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:09:33,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:09:33,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:09:33,742 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:09:33,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/Dubois-095.c [2024-11-22 03:09:35,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:09:35,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:09:35,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-095.c [2024-11-22 03:09:35,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62b3ea1fd/abc0bde0a939448ca74f18bb6f4facf7/FLAG1deb6f8f6 [2024-11-22 03:09:35,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62b3ea1fd/abc0bde0a939448ca74f18bb6f4facf7 [2024-11-22 03:09:35,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:09:35,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:09:35,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:09:35,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:09:35,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:09:35,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:35" (1/1) ... [2024-11-22 03:09:35,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1881c040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:35, skipping insertion in model container [2024-11-22 03:09:35,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:35" (1/1) ... [2024-11-22 03:09:36,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:09:36,548 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-095.c[67920,67933] [2024-11-22 03:09:36,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:09:36,604 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:09:36,753 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-095.c[67920,67933] [2024-11-22 03:09:36,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:09:36,789 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:09:36,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36 WrapperNode [2024-11-22 03:09:36,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:09:36,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:09:36,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:09:36,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:09:36,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:37,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:38,174 INFO L138 Inliner]: procedures = 13, calls = 767, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18921 [2024-11-22 03:09:38,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:09:38,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:09:38,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:09:38,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:09:38,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:38,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:38,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:38,511 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]. [2024-11-22 03:09:38,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:38,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:09:39,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:09:39,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:09:39,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:09:39,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (1/1) ... [2024-11-22 03:09:39,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:09:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:09:39,336 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) [2024-11-22 03:09:39,342 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 [2024-11-22 03:09:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:09:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:09:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:09:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:09:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-22 03:09:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-22 03:09:39,749 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:09:39,751 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:10:13,694 INFO L? ?]: Removed 6560 outVars from TransFormulas that were not future-live. [2024-11-22 03:10:13,695 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:10:13,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:10:13,791 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 03:10:13,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:13 BoogieIcfgContainer [2024-11-22 03:10:13,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:10:13,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:10:13,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:10:13,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:10:13,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:09:35" (1/3) ... [2024-11-22 03:10:13,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f731fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:13, skipping insertion in model container [2024-11-22 03:10:13,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:36" (2/3) ... [2024-11-22 03:10:13,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f731fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:13, skipping insertion in model container [2024-11-22 03:10:13,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:13" (3/3) ... [2024-11-22 03:10:13,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-095.c [2024-11-22 03:10:13,819 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:10:13,820 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 03:10:14,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:10:14,048 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;@1fe9693c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:10:14,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 03:10:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 7516 states, 6753 states have (on average 1.619280319857841) internal successors, (10935), 6754 states have internal predecessors, (10935), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-22 03:10:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6369 [2024-11-22 03:10:14,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:10:14,600 INFO L215 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 03:10:14,604 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:10:14,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:10:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 894710894, now seen corresponding path program 1 times [2024-11-22 03:10:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:10:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434310862] [2024-11-22 03:10:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:10:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 1152162 trivial. 0 not checked. [2024-11-22 03:10:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:10:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434310862] [2024-11-22 03:10:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434310862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:10:20,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058762715] [2024-11-22 03:10:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:20,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:10:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:10:20,894 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) [2024-11-22 03:10:20,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:10:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:23,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 13896 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 03:10:23,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:10:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1518 proven. 0 refuted. 0 times theorem prover too weak. 1152162 trivial. 0 not checked. [2024-11-22 03:10:23,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:10:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058762715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:10:23,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:10:23,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 03:10:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119116358] [2024-11-22 03:10:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:10:23,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 03:10:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:10:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 03:10:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 03:10:23,736 INFO L87 Difference]: Start difference. First operand has 7516 states, 6753 states have (on average 1.619280319857841) internal successors, (10935), 6754 states have internal predecessors, (10935), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) Second operand has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-22 03:10:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:10:23,969 INFO L93 Difference]: Finished difference Result 15026 states and 25664 transitions. [2024-11-22 03:10:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 03:10:23,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) Word has length 6368 [2024-11-22 03:10:23,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:10:24,020 INFO L225 Difference]: With dead ends: 15026 [2024-11-22 03:10:24,021 INFO L226 Difference]: Without dead ends: 7513 [2024-11-22 03:10:24,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6369 GetRequests, 6369 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 03:10:24,048 INFO L432 NwaCegarLoop]: 12451 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, 12451 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 [2024-11-22 03:10:24,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12451 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:10:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7513 states. [2024-11-22 03:10:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7513 to 7513. [2024-11-22 03:10:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 6751 states have (on average 1.6191675307361872) internal successors, (10931), 6751 states have internal predecessors, (10931), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-22 03:10:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 12451 transitions. [2024-11-22 03:10:24,643 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 12451 transitions. Word has length 6368 [2024-11-22 03:10:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:10:24,646 INFO L471 AbstractCegarLoop]: Abstraction has 7513 states and 12451 transitions. [2024-11-22 03:10:24,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1286.5) internal successors, (2573), 2 states have internal predecessors, (2573), 2 states have call successors, (760), 2 states have call predecessors, (760), 1 states have return successors, (760), 1 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-22 03:10:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 12451 transitions. [2024-11-22 03:10:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6369 [2024-11-22 03:10:24,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:10:24,924 INFO L215 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 03:10:24,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 03:10:25,125 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 [2024-11-22 03:10:25,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:10:25,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:10:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash 573663598, now seen corresponding path program 1 times [2024-11-22 03:10:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:10:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062877211] [2024-11-22 03:10:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:10:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1710 proven. 567 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-22 03:10:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:10:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062877211] [2024-11-22 03:10:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062877211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:10:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217591691] [2024-11-22 03:10:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:10:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:10:39,420 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) [2024-11-22 03:10:39,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:10:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:41,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 13896 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 03:10:41,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:10:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 2277 proven. 0 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-22 03:10:42,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:10:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217591691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:10:42,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:10:42,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-22 03:10:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83424658] [2024-11-22 03:10:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:10:42,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:10:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:10:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:10:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 03:10:42,140 INFO L87 Difference]: Start difference. First operand 7513 states and 12451 transitions. Second operand has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-22 03:10:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:10:45,779 INFO L93 Difference]: Finished difference Result 7525 states and 12465 transitions. [2024-11-22 03:10:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:10:45,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) Word has length 6368 [2024-11-22 03:10:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:10:45,814 INFO L225 Difference]: With dead ends: 7525 [2024-11-22 03:10:45,814 INFO L226 Difference]: Without dead ends: 7515 [2024-11-22 03:10:45,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6373 GetRequests, 6367 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 03:10:45,817 INFO L432 NwaCegarLoop]: 11687 mSDtfsCounter, 1 mSDsluCounter, 45215 mSDsCounter, 0 mSdLazyCounter, 5349 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56902 SdHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:10:45,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56902 Invalid, 5350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5349 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-22 03:10:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2024-11-22 03:10:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7515. [2024-11-22 03:10:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 6753 states have (on average 1.6189841551902857) internal successors, (10933), 6753 states have internal predecessors, (10933), 760 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 760 states have call predecessors, (760), 760 states have call successors, (760) [2024-11-22 03:10:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 12453 transitions. [2024-11-22 03:10:46,252 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 12453 transitions. Word has length 6368 [2024-11-22 03:10:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:10:46,271 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 12453 transitions. [2024-11-22 03:10:46,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 514.8) internal successors, (2574), 6 states have internal predecessors, (2574), 2 states have call successors, (760), 1 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760) [2024-11-22 03:10:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 12453 transitions. [2024-11-22 03:10:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6370 [2024-11-22 03:10:46,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:10:46,477 INFO L215 NwaCegarLoop]: trace histogram [760, 760, 760, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 03:10:46,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:10:46,682 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 [2024-11-22 03:10:46,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:10:46,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:10:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2128201547, now seen corresponding path program 1 times [2024-11-22 03:10:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:10:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399993878] [2024-11-22 03:10:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:10:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 1710 proven. 567 refuted. 0 times theorem prover too weak. 1151403 trivial. 0 not checked. [2024-11-22 03:10:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:10:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399993878] [2024-11-22 03:10:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399993878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:10:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214941049] [2024-11-22 03:10:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:10:55,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:10:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:10:55,766 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) [2024-11-22 03:10:55,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:10:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:10:58,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 13899 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 03:10:58,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:10:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1153680 backedges. 3036 proven. 0 refuted. 0 times theorem prover too weak. 1150644 trivial. 0 not checked. [2024-11-22 03:10:58,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:10:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214941049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:10:58,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:10:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 03:10:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039744085] [2024-11-22 03:10:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:10:58,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:10:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:10:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:10:58,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 03:10:58,689 INFO L87 Difference]: Start difference. First operand 7515 states and 12453 transitions. Second operand has 4 states, 4 states have (on average 643.75) internal successors, (2575), 4 states have internal predecessors, (2575), 2 states have call successors, (760), 2 states have call predecessors, (760), 2 states have return successors, (760), 2 states have call predecessors, (760), 2 states have call successors, (760)