./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init5_ground-2.i --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/array-examples/standard_init5_ground-2.i -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 a4846ac0596361a9114a94843302c8ab94d86ee4373eaf89126c12ed566c8536 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:55:26,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:55:26,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:55:26,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:55:26,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:55:26,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:55:26,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:55:26,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:55:26,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:55:26,435 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:55:26,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:55:26,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:55:26,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:55:26,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:55:26,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:55:26,437 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:55:26,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:55:26,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:55:26,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:55:26,438 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 -> a4846ac0596361a9114a94843302c8ab94d86ee4373eaf89126c12ed566c8536 [2025-02-05 09:55:26,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:55:26,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:55:26,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:55:26,672 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:55:26,672 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:55:26,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init5_ground-2.i [2025-02-05 09:55:27,916 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94b786f91/ddba188e283142329d51101b5b364ef9/FLAG04b3ac4a7 [2025-02-05 09:55:28,158 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:55:28,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init5_ground-2.i [2025-02-05 09:55:28,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94b786f91/ddba188e283142329d51101b5b364ef9/FLAG04b3ac4a7 [2025-02-05 09:55:28,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94b786f91/ddba188e283142329d51101b5b364ef9 [2025-02-05 09:55:28,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:55:28,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:55:28,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:55:28,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:55:28,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:55:28,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203c7686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:55:28,343 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/array-examples/standard_init5_ground-2.i[816,829] [2025-02-05 09:55:28,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:55:28,363 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:55:28,372 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/array-examples/standard_init5_ground-2.i[816,829] [2025-02-05 09:55:28,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:55:28,390 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:55:28,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28 WrapperNode [2025-02-05 09:55:28,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:55:28,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:55:28,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:55:28,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:55:28,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,415 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2025-02-05 09:55:28,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:55:28,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:55:28,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:55:28,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:55:28,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,432 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-02-05 09:55:28,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:55:28,440 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:55:28,440 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:55:28,440 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:55:28,441 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (1/1) ... [2025-02-05 09:55:28,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:55:28,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:28,473 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 09:55:28,480 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 09:55:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:55:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:55:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:55:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:55:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:55:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:55:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:55:28,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:55:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:55:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:55:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:55:28,553 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:55:28,555 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:55:28,666 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-05 09:55:28,673 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 09:55:28,673 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:55:28,678 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:55:28,679 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:55:28,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:55:28 BoogieIcfgContainer [2025-02-05 09:55:28,679 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:55:28,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:55:28,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:55:28,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:55:28,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:55:28" (1/3) ... [2025-02-05 09:55:28,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16759742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:55:28" (2/3) ... [2025-02-05 09:55:28,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16759742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:55:28, skipping insertion in model container [2025-02-05 09:55:28,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:55:28" (3/3) ... [2025-02-05 09:55:28,687 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init5_ground-2.i [2025-02-05 09:55:28,696 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:55:28,697 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init5_ground-2.i that has 1 procedures, 15 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-05 09:55:28,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:55:28,758 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;@1b2e58b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:55:28,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:55:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 09:55:28,774 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:28,774 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:28,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:28,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -384949446, now seen corresponding path program 1 times [2025-02-05 09:55:28,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:28,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465802476] [2025-02-05 09:55:28,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:28,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 09:55:28,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 09:55:28,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:28,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:55:28,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:28,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465802476] [2025-02-05 09:55:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465802476] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:55:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:55:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:55:28,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722947794] [2025-02-05 09:55:28,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:55:28,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:55:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:28,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:55:28,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:55:28,990 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:29,029 INFO L93 Difference]: Finished difference Result 32 states and 48 transitions. [2025-02-05 09:55:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:55:29,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 09:55:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:29,036 INFO L225 Difference]: With dead ends: 32 [2025-02-05 09:55:29,037 INFO L226 Difference]: Without dead ends: 17 [2025-02-05 09:55:29,039 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 09:55:29,041 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:29,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:55:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-02-05 09:55:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-02-05 09:55:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-02-05 09:55:29,067 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2025-02-05 09:55:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:29,067 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-02-05 09:55:29,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-02-05 09:55:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 09:55:29,068 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:29,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:29,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:55:29,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:29,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1862349453, now seen corresponding path program 1 times [2025-02-05 09:55:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189072730] [2025-02-05 09:55:29,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:29,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 09:55:29,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 09:55:29,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:29,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 09:55:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189072730] [2025-02-05 09:55:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189072730] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:29,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929743360] [2025-02-05 09:55:29,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:55:29,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:29,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:29,205 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 09:55:29,206 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 09:55:29,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 09:55:29,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 09:55:29,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:55:29,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:55:29,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 09:55:29,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 09:55:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929743360] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:29,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:29,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:55:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661785166] [2025-02-05 09:55:29,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:29,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:55:29,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:29,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:55:29,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:55:29,304 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:29,418 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2025-02-05 09:55:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:55:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-05 09:55:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:29,419 INFO L225 Difference]: With dead ends: 45 [2025-02-05 09:55:29,420 INFO L226 Difference]: Without dead ends: 32 [2025-02-05 09:55:29,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 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 09:55:29,421 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:29,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:55:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-05 09:55:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-05 09:55:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2025-02-05 09:55:29,433 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 15 [2025-02-05 09:55:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:29,433 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2025-02-05 09:55:29,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2025-02-05 09:55:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 09:55:29,434 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:29,435 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:29,440 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 09:55:29,635 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 09:55:29,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:29,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1721656058, now seen corresponding path program 2 times [2025-02-05 09:55:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126466499] [2025-02-05 09:55:29,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:55:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:29,658 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-05 09:55:29,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 09:55:29,683 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:55:29,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-05 09:55:29,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126466499] [2025-02-05 09:55:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126466499] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949134082] [2025-02-05 09:55:29,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:55:29,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:29,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:29,838 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 09:55:29,839 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 09:55:29,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-05 09:55:29,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 09:55:29,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:55:29,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:29,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:55:29,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-05 09:55:29,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-05 09:55:29,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949134082] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:29,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 09:55:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121441287] [2025-02-05 09:55:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:29,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:55:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:29,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:55:29,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:55:29,983 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:30,110 INFO L93 Difference]: Finished difference Result 87 states and 126 transitions. [2025-02-05 09:55:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 09:55:30,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-05 09:55:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:30,111 INFO L225 Difference]: With dead ends: 87 [2025-02-05 09:55:30,111 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 09:55:30,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 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 09:55:30,112 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:30,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:55:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 09:55:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-02-05 09:55:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2025-02-05 09:55:30,118 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 30 [2025-02-05 09:55:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:30,118 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2025-02-05 09:55:30,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2025-02-05 09:55:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-05 09:55:30,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:30,119 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:30,125 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 09:55:30,323 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 09:55:30,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:30,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash 130723482, now seen corresponding path program 3 times [2025-02-05 09:55:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432561008] [2025-02-05 09:55:30,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:55:30,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:30,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 6 equivalence classes. [2025-02-05 09:55:30,403 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-02-05 09:55:30,403 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:55:30,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 09:55:30,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432561008] [2025-02-05 09:55:30,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432561008] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235818780] [2025-02-05 09:55:30,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:55:30,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:30,665 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 09:55:30,671 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 09:55:30,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 6 equivalence classes. [2025-02-05 09:55:34,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-02-05 09:55:34,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 09:55:34,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:34,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 09:55:34,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:55:34,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-02-05 09:55:34,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235818780] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:34,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:34,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2025-02-05 09:55:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175583567] [2025-02-05 09:55:34,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:34,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 09:55:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:34,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 09:55:34,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=327, Unknown=0, NotChecked=0, Total=650 [2025-02-05 09:55:34,545 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:34,922 INFO L93 Difference]: Finished difference Result 171 states and 240 transitions. [2025-02-05 09:55:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 09:55:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-05 09:55:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:34,924 INFO L225 Difference]: With dead ends: 171 [2025-02-05 09:55:34,924 INFO L226 Difference]: Without dead ends: 122 [2025-02-05 09:55:34,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2025-02-05 09:55:34,925 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:34,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 09:55:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-02-05 09:55:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2025-02-05 09:55:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0495867768595042) internal successors, (127), 121 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2025-02-05 09:55:34,945 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 60 [2025-02-05 09:55:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:34,945 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2025-02-05 09:55:34,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2025-02-05 09:55:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 09:55:34,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:34,949 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:34,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 09:55:35,151 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 09:55:35,151 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:35,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash -879428134, now seen corresponding path program 4 times [2025-02-05 09:55:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870986196] [2025-02-05 09:55:35,153 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:55:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:35,199 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 120 statements into 2 equivalence classes. [2025-02-05 09:55:35,237 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 09:55:35,238 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:55:35,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-02-05 09:55:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870986196] [2025-02-05 09:55:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870986196] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357525385] [2025-02-05 09:55:36,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:55:36,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:36,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:36,044 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 09:55:36,045 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 09:55:36,136 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 120 statements into 2 equivalence classes. [2025-02-05 09:55:36,220 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 09:55:36,221 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:55:36,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:36,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:55:36,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:55:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-02-05 09:55:36,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:55:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-02-05 09:55:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357525385] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:55:36,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:55:36,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:55:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470350105] [2025-02-05 09:55:36,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:55:36,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:55:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:55:36,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:55:36,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:55:36,988 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:55:37,576 INFO L93 Difference]: Finished difference Result 339 states and 468 transitions. [2025-02-05 09:55:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:55:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2025-02-05 09:55:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:55:37,578 INFO L225 Difference]: With dead ends: 339 [2025-02-05 09:55:37,578 INFO L226 Difference]: Without dead ends: 242 [2025-02-05 09:55:37,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:55:37,579 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 09:55:37,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 09:55:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-02-05 09:55:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2025-02-05 09:55:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.0248962655601659) internal successors, (247), 241 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 247 transitions. [2025-02-05 09:55:37,594 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 247 transitions. Word has length 120 [2025-02-05 09:55:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:55:37,594 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 247 transitions. [2025-02-05 09:55:37,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:55:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 247 transitions. [2025-02-05 09:55:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-02-05 09:55:37,596 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:55:37,596 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:55:37,606 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 09:55:37,797 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 09:55:37,799 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:55:37,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:55:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1086880858, now seen corresponding path program 5 times [2025-02-05 09:55:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:55:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776647786] [2025-02-05 09:55:37,800 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:55:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:55:37,852 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 240 statements into 24 equivalence classes. [2025-02-05 09:55:38,117 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 240 of 240 statements. [2025-02-05 09:55:38,117 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-05 09:55:38,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:55:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-02-05 09:55:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:55:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776647786] [2025-02-05 09:55:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776647786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:55:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137553009] [2025-02-05 09:55:40,669 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:55:40,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:55:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:55:40,671 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 09:55:40,673 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 09:55:40,855 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 240 statements into 24 equivalence classes.