./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:49:07,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:49:07,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 12:49:07,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:49:07,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:49:07,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:49:07,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:49:07,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:49:07,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:49:07,480 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:49:07,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:49:07,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:49:07,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:49:07,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:49:07,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:49:07,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:49:07,483 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:49:07,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:49:07,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:49:07,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:49:07,485 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2025-02-05 12:49:07,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:49:07,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:49:07,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:49:07,732 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:49:07,732 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:49:07,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2025-02-05 12:49:08,882 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6da8f0465/b751b1904d594dfaa293fef4e3ce80f9/FLAGa748c104f [2025-02-05 12:49:09,113 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:49:09,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2025-02-05 12:49:09,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6da8f0465/b751b1904d594dfaa293fef4e3ce80f9/FLAGa748c104f [2025-02-05 12:49:09,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6da8f0465/b751b1904d594dfaa293fef4e3ce80f9 [2025-02-05 12:49:09,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:49:09,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:49:09,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:49:09,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:49:09,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:49:09,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5caa8ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09, skipping insertion in model container [2025-02-05 12:49:09,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:49:09,254 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2025-02-05 12:49:09,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:49:09,274 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:49:09,281 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2025-02-05 12:49:09,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:49:09,296 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:49:09,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09 WrapperNode [2025-02-05 12:49:09,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:49:09,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:49:09,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:49:09,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:49:09,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,317 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-02-05 12:49:09,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:49:09,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:49:09,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:49:09,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:49:09,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,335 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]. [2025-02-05 12:49:09,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:49:09,349 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:49:09,349 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:49:09,349 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:49:09,350 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (1/1) ... [2025-02-05 12:49:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:49:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:09,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 12:49:09,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 12:49:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:49:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-05 12:49:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-05 12:49:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-02-05 12:49:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-02-05 12:49:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 12:49:09,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:49:09,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:49:09,431 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:49:09,432 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:49:09,543 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-02-05 12:49:09,543 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:49:09,549 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:49:09,549 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:49:09,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:49:09 BoogieIcfgContainer [2025-02-05 12:49:09,549 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:49:09,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:49:09,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:49:09,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:49:09,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:49:09" (1/3) ... [2025-02-05 12:49:09,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d2def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:49:09, skipping insertion in model container [2025-02-05 12:49:09,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:49:09" (2/3) ... [2025-02-05 12:49:09,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d2def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:49:09, skipping insertion in model container [2025-02-05 12:49:09,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:49:09" (3/3) ... [2025-02-05 12:49:09,555 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2025-02-05 12:49:09,564 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:49:09,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c that has 3 procedures, 34 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 12:49:09,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:49:09,599 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;@1cf9efc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:49:09,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:49:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 12:49:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 12:49:09,605 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:09,606 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:09,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:09,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash -949351409, now seen corresponding path program 1 times [2025-02-05 12:49:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:09,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513826653] [2025-02-05 12:49:09,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:49:09,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:09,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 12:49:09,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 12:49:09,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:49:09,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 12:49:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:09,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513826653] [2025-02-05 12:49:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513826653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:49:09,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:49:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 12:49:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398403616] [2025-02-05 12:49:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:49:09,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 12:49:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:09,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 12:49:09,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 12:49:09,771 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:49:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:09,804 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2025-02-05 12:49:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 12:49:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2025-02-05 12:49:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:09,810 INFO L225 Difference]: With dead ends: 69 [2025-02-05 12:49:09,810 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 12:49:09,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 12:49:09,815 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:09,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:49:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 12:49:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2025-02-05 12:49:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 12:49:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-02-05 12:49:09,839 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-02-05 12:49:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:09,839 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-02-05 12:49:09,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-05 12:49:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-02-05 12:49:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 12:49:09,840 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:09,841 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:09,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 12:49:09,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:09,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1438058731, now seen corresponding path program 1 times [2025-02-05 12:49:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051442117] [2025-02-05 12:49:09,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:49:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:09,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 12:49:09,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 12:49:09,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:49:09,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 12:49:09,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051442117] [2025-02-05 12:49:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051442117] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:09,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612303067] [2025-02-05 12:49:09,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:49:09,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:09,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:09,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:09,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 12:49:10,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-05 12:49:10,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 12:49:10,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:49:10,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:10,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 12:49:10,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 12:49:10,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 12:49:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612303067] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:10,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:10,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 12:49:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490489733] [2025-02-05 12:49:10,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:10,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 12:49:10,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:10,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 12:49:10,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 12:49:10,173 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 12:49:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:10,232 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2025-02-05 12:49:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 12:49:10,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 48 [2025-02-05 12:49:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:10,233 INFO L225 Difference]: With dead ends: 67 [2025-02-05 12:49:10,233 INFO L226 Difference]: Without dead ends: 64 [2025-02-05 12:49:10,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 12:49:10,234 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:10,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:49:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-05 12:49:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-02-05 12:49:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-05 12:49:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2025-02-05 12:49:10,241 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 48 [2025-02-05 12:49:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:10,241 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2025-02-05 12:49:10,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 12:49:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2025-02-05 12:49:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-05 12:49:10,243 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:10,243 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:10,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 12:49:10,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:10,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:10,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1442197873, now seen corresponding path program 2 times [2025-02-05 12:49:10,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:10,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017275288] [2025-02-05 12:49:10,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 12:49:10,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:10,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-02-05 12:49:10,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 12:49:10,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 12:49:10,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-05 12:49:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017275288] [2025-02-05 12:49:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017275288] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568634995] [2025-02-05 12:49:10,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 12:49:10,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:10,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:10,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:10,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 12:49:10,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-02-05 12:49:10,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 12:49:10,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 12:49:10,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:10,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 12:49:10,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-05 12:49:10,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-05 12:49:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568634995] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:10,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 12:49:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444023473] [2025-02-05 12:49:10,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:10,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 12:49:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:10,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 12:49:10,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 12:49:10,948 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-02-05 12:49:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:11,041 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2025-02-05 12:49:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 12:49:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 117 [2025-02-05 12:49:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:11,043 INFO L225 Difference]: With dead ends: 133 [2025-02-05 12:49:11,043 INFO L226 Difference]: Without dead ends: 130 [2025-02-05 12:49:11,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 12:49:11,043 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:11,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 12:49:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-05 12:49:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-02-05 12:49:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-05 12:49:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2025-02-05 12:49:11,065 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 117 [2025-02-05 12:49:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:11,065 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2025-02-05 12:49:11,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-02-05 12:49:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2025-02-05 12:49:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-02-05 12:49:11,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:11,069 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:11,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 12:49:11,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:11,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:11,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash 860949071, now seen corresponding path program 3 times [2025-02-05 12:49:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:11,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349815235] [2025-02-05 12:49:11,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 12:49:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:11,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-02-05 12:49:11,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-02-05 12:49:11,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-05 12:49:11,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-05 12:49:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349815235] [2025-02-05 12:49:11,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349815235] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693041876] [2025-02-05 12:49:11,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 12:49:11,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:11,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:11,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:11,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 12:49:11,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-02-05 12:49:11,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-02-05 12:49:11,811 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-05 12:49:11,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:11,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 12:49:11,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-05 12:49:11,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-02-05 12:49:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693041876] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:12,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 12:49:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226111523] [2025-02-05 12:49:12,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:12,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 12:49:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:12,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 12:49:12,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 12:49:12,427 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-02-05 12:49:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:12,679 INFO L93 Difference]: Finished difference Result 265 states and 366 transitions. [2025-02-05 12:49:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 12:49:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 255 [2025-02-05 12:49:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:12,682 INFO L225 Difference]: With dead ends: 265 [2025-02-05 12:49:12,682 INFO L226 Difference]: Without dead ends: 262 [2025-02-05 12:49:12,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 12:49:12,686 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:12,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 205 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 12:49:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-02-05 12:49:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2025-02-05 12:49:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 12:49:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2025-02-05 12:49:12,722 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 255 [2025-02-05 12:49:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:12,722 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2025-02-05 12:49:12,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-02-05 12:49:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2025-02-05 12:49:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2025-02-05 12:49:12,733 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:12,734 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:12,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 12:49:12,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:12,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:12,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2083549647, now seen corresponding path program 4 times [2025-02-05 12:49:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151339131] [2025-02-05 12:49:12,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 12:49:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:12,981 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-02-05 12:49:13,014 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-02-05 12:49:13,015 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 12:49:13,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-05 12:49:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151339131] [2025-02-05 12:49:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151339131] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089522726] [2025-02-05 12:49:13,911 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 12:49:13,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:13,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:13,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 12:49:14,003 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-02-05 12:49:14,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-02-05 12:49:14,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 12:49:14,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:14,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 12:49:14,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-05 12:49:14,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-02-05 12:49:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089522726] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:15,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-02-05 12:49:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358920755] [2025-02-05 12:49:15,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:15,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 12:49:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:15,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 12:49:15,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 12:49:15,395 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-02-05 12:49:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:15,780 INFO L93 Difference]: Finished difference Result 529 states and 738 transitions. [2025-02-05 12:49:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 12:49:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 531 [2025-02-05 12:49:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:15,785 INFO L225 Difference]: With dead ends: 529 [2025-02-05 12:49:15,785 INFO L226 Difference]: Without dead ends: 526 [2025-02-05 12:49:15,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 12:49:15,786 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:15,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 347 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 12:49:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-02-05 12:49:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2025-02-05 12:49:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 335 states have (on average 1.0029850746268656) internal successors, (336), 335 states have internal predecessors, (336), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-02-05 12:49:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2025-02-05 12:49:15,816 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 531 [2025-02-05 12:49:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:15,817 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2025-02-05 12:49:15,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-02-05 12:49:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2025-02-05 12:49:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2025-02-05 12:49:15,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:15,840 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:15,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 12:49:16,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:16,044 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:16,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1170014001, now seen corresponding path program 5 times [2025-02-05 12:49:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71990839] [2025-02-05 12:49:16,045 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 12:49:16,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:16,102 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-02-05 12:49:16,259 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-02-05 12:49:16,259 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-02-05 12:49:16,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-05 12:49:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71990839] [2025-02-05 12:49:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71990839] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402626074] [2025-02-05 12:49:19,458 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 12:49:19,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:19,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:19,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 12:49:19,627 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-02-05 12:49:19,931 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-02-05 12:49:19,931 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-02-05 12:49:19,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:19,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 12:49:19,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-05 12:49:20,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-02-05 12:49:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402626074] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:23,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-05 12:49:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637773643] [2025-02-05 12:49:23,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:23,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-05 12:49:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:23,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-05 12:49:23,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 12:49:23,268 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-02-05 12:49:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:24,218 INFO L93 Difference]: Finished difference Result 1057 states and 1482 transitions. [2025-02-05 12:49:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 12:49:24,219 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1083 [2025-02-05 12:49:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:24,227 INFO L225 Difference]: With dead ends: 1057 [2025-02-05 12:49:24,227 INFO L226 Difference]: Without dead ends: 1054 [2025-02-05 12:49:24,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 12:49:24,230 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:24,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 631 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 12:49:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2025-02-05 12:49:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2025-02-05 12:49:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 671 states have (on average 1.0014903129657229) internal successors, (672), 671 states have internal predecessors, (672), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-05 12:49:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1432 transitions. [2025-02-05 12:49:24,299 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1432 transitions. Word has length 1083 [2025-02-05 12:49:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:24,300 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1432 transitions. [2025-02-05 12:49:24,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-02-05 12:49:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1432 transitions. [2025-02-05 12:49:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2188 [2025-02-05 12:49:24,359 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:24,359 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:24,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 12:49:24,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:24,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:24,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1472782641, now seen corresponding path program 6 times [2025-02-05 12:49:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:24,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301379231] [2025-02-05 12:49:24,566 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 12:49:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:24,680 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-02-05 12:49:24,885 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-02-05 12:49:24,885 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-02-05 12:49:24,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-05 12:49:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:49:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301379231] [2025-02-05 12:49:39,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301379231] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:49:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696403577] [2025-02-05 12:49:39,243 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 12:49:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:49:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:49:39,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 12:49:39,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 12:49:39,574 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-02-05 12:49:40,470 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-02-05 12:49:40,470 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-02-05 12:49:40,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:49:40,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 4754 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 12:49:40,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:49:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-05 12:49:41,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:49:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-02-05 12:49:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696403577] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:49:49,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:49:49,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-05 12:49:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525664508] [2025-02-05 12:49:49,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:49:49,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-05 12:49:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:49:49,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-05 12:49:49,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 12:49:49,986 INFO L87 Difference]: Start difference. First operand 1054 states and 1432 transitions. Second operand has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-02-05 12:49:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:49:53,092 INFO L93 Difference]: Finished difference Result 2113 states and 2970 transitions. [2025-02-05 12:49:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-05 12:49:53,094 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2187 [2025-02-05 12:49:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:49:53,105 INFO L225 Difference]: With dead ends: 2113 [2025-02-05 12:49:53,105 INFO L226 Difference]: Without dead ends: 2110 [2025-02-05 12:49:53,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4469 GetRequests, 4278 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 12:49:53,109 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 12:49:53,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1067 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 12:49:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2025-02-05 12:49:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2110. [2025-02-05 12:49:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1343 states have (on average 1.0007446016381236) internal successors, (1344), 1343 states have internal predecessors, (1344), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2025-02-05 12:49:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2872 transitions. [2025-02-05 12:49:53,170 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2872 transitions. Word has length 2187 [2025-02-05 12:49:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:49:53,173 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 2872 transitions. [2025-02-05 12:49:53,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-02-05 12:49:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2872 transitions. [2025-02-05 12:49:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4396 [2025-02-05 12:49:53,283 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:49:53,284 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:49:53,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 12:49:53,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 12:49:53,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:49:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:49:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -816096561, now seen corresponding path program 7 times [2025-02-05 12:49:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:49:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481403372] [2025-02-05 12:49:53,490 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 12:49:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:49:53,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4395 statements into 1 equivalence classes. [2025-02-05 12:49:53,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4395 of 4395 statements. [2025-02-05 12:49:53,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:49:53,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat