./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/recursive-simple/fibo_2calls_5-1.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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:04:13,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:04:13,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:04:13,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:04:13,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:04:13,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:04:13,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:04:13,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:04:13,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:04:13,355 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:04:13,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:04:13,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:04:13,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:04:13,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:04:13,357 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:04:13,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:04:13,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:04:13,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:04:13,358 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 -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2025-02-07 21:04:13,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:04:13,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:04:13,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:04:13,570 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:04:13,570 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:04:13,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2025-02-07 21:04:14,692 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96dd3ac0e/7b84f65ff63d41eaa33d47ed4ffb29fa/FLAG1dabca632 [2025-02-07 21:04:14,915 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:04:14,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2025-02-07 21:04:14,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96dd3ac0e/7b84f65ff63d41eaa33d47ed4ffb29fa/FLAG1dabca632 [2025-02-07 21:04:15,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96dd3ac0e/7b84f65ff63d41eaa33d47ed4ffb29fa [2025-02-07 21:04:15,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:04:15,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:04:15,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:04:15,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:04:15,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:04:15,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7fecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15, skipping insertion in model container [2025-02-07 21:04:15,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:04:15,352 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/recursive-simple/fibo_2calls_5-1.c[946,959] [2025-02-07 21:04:15,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:04:15,363 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:04:15,372 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/recursive-simple/fibo_2calls_5-1.c[946,959] [2025-02-07 21:04:15,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:04:15,383 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:04:15,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15 WrapperNode [2025-02-07 21:04:15,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:04:15,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:04:15,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:04:15,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:04:15,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,404 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-02-07 21:04:15,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:04:15,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:04:15,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:04:15,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:04:15,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,420 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]. [2025-02-07 21:04:15,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:04:15,432 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:04:15,432 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:04:15,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:04:15,433 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (1/1) ... [2025-02-07 21:04:15,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:04:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:15,455 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) [2025-02-07 21:04:15,457 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 [2025-02-07 21:04:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:04:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:04:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-02-07 21:04:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-02-07 21:04:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-02-07 21:04:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-02-07 21:04:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:04:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:04:15,518 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:04:15,520 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:04:15,598 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-02-07 21:04:15,615 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-02-07 21:04:15,621 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-07 21:04:15,621 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:04:15,626 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:04:15,626 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:04:15,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:15 BoogieIcfgContainer [2025-02-07 21:04:15,627 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:04:15,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:04:15,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:04:15,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:04:15,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:04:15" (1/3) ... [2025-02-07 21:04:15,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c49672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:04:15, skipping insertion in model container [2025-02-07 21:04:15,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:15" (2/3) ... [2025-02-07 21:04:15,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c49672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:04:15, skipping insertion in model container [2025-02-07 21:04:15,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:15" (3/3) ... [2025-02-07 21:04:15,632 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2025-02-07 21:04:15,643 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:04:15,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_5-1.c that has 3 procedures, 27 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 21:04:15,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:04:15,681 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a076d55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:04:15,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 21:04:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 21:04:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 21:04:15,691 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:15,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:15,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:15,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1202197486, now seen corresponding path program 1 times [2025-02-07 21:04:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:15,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017450639] [2025-02-07 21:04:15,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:15,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 21:04:15,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 21:04:15,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:15,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:04:15,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017450639] [2025-02-07 21:04:15,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017450639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:04:15,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:04:15,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:04:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503640060] [2025-02-07 21:04:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:04:15,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:04:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:15,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:04:15,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:15,867 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:04:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:15,922 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2025-02-07 21:04:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:04:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2025-02-07 21:04:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:15,928 INFO L225 Difference]: With dead ends: 38 [2025-02-07 21:04:15,928 INFO L226 Difference]: Without dead ends: 28 [2025-02-07 21:04:15,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:15,931 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:15,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:04:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-07 21:04:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-02-07 21:04:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-07 21:04:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2025-02-07 21:04:15,962 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2025-02-07 21:04:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:15,962 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2025-02-07 21:04:15,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:04:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2025-02-07 21:04:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-07 21:04:15,963 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:15,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:15,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:04:15,964 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:15,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash -362024635, now seen corresponding path program 1 times [2025-02-07 21:04:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:15,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221172827] [2025-02-07 21:04:15,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:15,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:15,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-07 21:04:15,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-07 21:04:15,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:15,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:04:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:16,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221172827] [2025-02-07 21:04:16,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221172827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:04:16,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:04:16,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:04:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061504530] [2025-02-07 21:04:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:04:16,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:04:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:16,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:04:16,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:16,028 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:04:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:16,068 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-02-07 21:04:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:04:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-02-07 21:04:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:16,069 INFO L225 Difference]: With dead ends: 32 [2025-02-07 21:04:16,069 INFO L226 Difference]: Without dead ends: 28 [2025-02-07 21:04:16,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:16,069 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:16,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:04:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-07 21:04:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2025-02-07 21:04:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-07 21:04:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2025-02-07 21:04:16,075 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2025-02-07 21:04:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:16,076 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2025-02-07 21:04:16,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:04:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2025-02-07 21:04:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-07 21:04:16,076 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:16,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:16,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 21:04:16,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:16,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1370279311, now seen corresponding path program 1 times [2025-02-07 21:04:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632444295] [2025-02-07 21:04:16,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:16,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 21:04:16,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 21:04:16,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:16,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632444295] [2025-02-07 21:04:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632444295] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463382911] [2025-02-07 21:04:16,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:16,170 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) [2025-02-07 21:04:16,172 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 [2025-02-07 21:04:16,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 21:04:16,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 21:04:16,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:16,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:16,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:04:16,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:16,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463382911] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:16,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:16,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-02-07 21:04:16,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218072132] [2025-02-07 21:04:16,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:16,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 21:04:16,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:16,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 21:04:16,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-02-07 21:04:16,472 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 21:04:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:16,586 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2025-02-07 21:04:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:04:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 22 [2025-02-07 21:04:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:16,588 INFO L225 Difference]: With dead ends: 54 [2025-02-07 21:04:16,588 INFO L226 Difference]: Without dead ends: 30 [2025-02-07 21:04:16,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-07 21:04:16,589 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:16,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 122 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-07 21:04:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2025-02-07 21:04:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-07 21:04:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2025-02-07 21:04:16,593 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 22 [2025-02-07 21:04:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:16,593 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2025-02-07 21:04:16,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 21:04:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2025-02-07 21:04:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 21:04:16,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:16,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:16,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 21:04:16,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:16,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:16,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1186636893, now seen corresponding path program 1 times [2025-02-07 21:04:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:16,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410033398] [2025-02-07 21:04:16,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:16,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 21:04:16,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 21:04:16,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:16,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:16,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:16,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410033398] [2025-02-07 21:04:16,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410033398] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:16,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293754267] [2025-02-07 21:04:16,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:16,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:16,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:16,874 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) [2025-02-07 21:04:16,875 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 [2025-02-07 21:04:16,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 21:04:16,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 21:04:16,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:16,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:16,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:04:16,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:16,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:04:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293754267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:17,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:17,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-02-07 21:04:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005228810] [2025-02-07 21:04:17,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:17,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 21:04:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:17,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 21:04:17,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-07 21:04:17,050 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 21:04:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:17,129 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2025-02-07 21:04:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 21:04:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2025-02-07 21:04:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:17,131 INFO L225 Difference]: With dead ends: 39 [2025-02-07 21:04:17,131 INFO L226 Difference]: Without dead ends: 35 [2025-02-07 21:04:17,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-07 21:04:17,131 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:17,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 102 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-07 21:04:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2025-02-07 21:04:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2025-02-07 21:04:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2025-02-07 21:04:17,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 23 [2025-02-07 21:04:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:17,139 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2025-02-07 21:04:17,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 21:04:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2025-02-07 21:04:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 21:04:17,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:17,141 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:17,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 21:04:17,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:17,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:17,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1599200641, now seen corresponding path program 1 times [2025-02-07 21:04:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090353344] [2025-02-07 21:04:17,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:17,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:04:17,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:04:17,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:17,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:04:17,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:17,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090353344] [2025-02-07 21:04:17,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090353344] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:17,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835559812] [2025-02-07 21:04:17,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:17,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:17,412 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) [2025-02-07 21:04:17,434 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 [2025-02-07 21:04:17,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 21:04:17,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 21:04:17,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:17,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:17,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:17,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 21:04:17,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:04:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835559812] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:17,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:17,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2025-02-07 21:04:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976545688] [2025-02-07 21:04:17,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 21:04:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:17,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 21:04:17,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-02-07 21:04:17,790 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-02-07 21:04:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:17,909 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2025-02-07 21:04:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:04:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 35 [2025-02-07 21:04:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:17,910 INFO L225 Difference]: With dead ends: 68 [2025-02-07 21:04:17,910 INFO L226 Difference]: Without dead ends: 37 [2025-02-07 21:04:17,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-02-07 21:04:17,911 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:17,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 132 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-07 21:04:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2025-02-07 21:04:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2025-02-07 21:04:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2025-02-07 21:04:17,919 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 35 [2025-02-07 21:04:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:17,920 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2025-02-07 21:04:17,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.0) internal successors, (44), 14 states have internal predecessors, (44), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2025-02-07 21:04:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2025-02-07 21:04:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-07 21:04:17,922 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:17,922 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:17,928 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 [2025-02-07 21:04:18,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:18,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:18,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -790926898, now seen corresponding path program 1 times [2025-02-07 21:04:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:18,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875368890] [2025-02-07 21:04:18,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:18,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:18,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 21:04:18,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:04:18,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:18,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 21:04:18,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:18,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875368890] [2025-02-07 21:04:18,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875368890] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:18,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649322294] [2025-02-07 21:04:18,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:18,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:18,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:18,220 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) [2025-02-07 21:04:18,220 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 [2025-02-07 21:04:18,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 21:04:18,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:04:18,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:18,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:18,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:18,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:04:18,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:04:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649322294] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:18,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-02-07 21:04:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276764021] [2025-02-07 21:04:18,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:18,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 21:04:18,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:18,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 21:04:18,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-02-07 21:04:18,568 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-02-07 21:04:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:18,851 INFO L93 Difference]: Finished difference Result 100 states and 160 transitions. [2025-02-07 21:04:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 21:04:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2025-02-07 21:04:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:18,852 INFO L225 Difference]: With dead ends: 100 [2025-02-07 21:04:18,852 INFO L226 Difference]: Without dead ends: 67 [2025-02-07 21:04:18,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2025-02-07 21:04:18,853 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:18,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 255 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:04:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-07 21:04:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2025-02-07 21:04:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 38 states have internal predecessors, (40), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2025-02-07 21:04:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 85 transitions. [2025-02-07 21:04:18,861 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 85 transitions. Word has length 36 [2025-02-07 21:04:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:18,862 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 85 transitions. [2025-02-07 21:04:18,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2025-02-07 21:04:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 85 transitions. [2025-02-07 21:04:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 21:04:18,863 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:18,863 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:18,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 21:04:19,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-07 21:04:19,066 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:19,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 559327794, now seen corresponding path program 1 times [2025-02-07 21:04:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580417985] [2025-02-07 21:04:19,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:19,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-07 21:04:19,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:04:19,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:19,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 21:04:19,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:19,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580417985] [2025-02-07 21:04:19,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580417985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:19,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370815789] [2025-02-07 21:04:19,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:19,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:19,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:19,141 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) [2025-02-07 21:04:19,143 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 [2025-02-07 21:04:19,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-07 21:04:19,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 21:04:19,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:19,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:19,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 21:04:19,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 21:04:19,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 21:04:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370815789] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:19,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:19,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 16 [2025-02-07 21:04:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460117976] [2025-02-07 21:04:19,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:19,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 21:04:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:19,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 21:04:19,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-02-07 21:04:19,607 INFO L87 Difference]: Start difference. First operand 55 states and 85 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 11 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-02-07 21:04:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:19,741 INFO L93 Difference]: Finished difference Result 101 states and 192 transitions. [2025-02-07 21:04:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-07 21:04:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 11 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) Word has length 50 [2025-02-07 21:04:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:19,743 INFO L225 Difference]: With dead ends: 101 [2025-02-07 21:04:19,743 INFO L226 Difference]: Without dead ends: 97 [2025-02-07 21:04:19,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:04:19,744 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:19,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 139 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-07 21:04:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 63. [2025-02-07 21:04:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 43 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2025-02-07 21:04:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 105 transitions. [2025-02-07 21:04:19,755 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 105 transitions. Word has length 50 [2025-02-07 21:04:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:19,755 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 105 transitions. [2025-02-07 21:04:19,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 16 states have internal predecessors, (53), 11 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2025-02-07 21:04:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 105 transitions. [2025-02-07 21:04:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-07 21:04:19,757 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:19,757 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:19,763 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 [2025-02-07 21:04:19,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:19,962 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1781014353, now seen corresponding path program 1 times [2025-02-07 21:04:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:19,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858807839] [2025-02-07 21:04:19,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:19,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:19,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-07 21:04:20,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-07 21:04:20,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:20,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-02-07 21:04:20,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858807839] [2025-02-07 21:04:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858807839] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423137988] [2025-02-07 21:04:20,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:20,154 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) [2025-02-07 21:04:20,156 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 [2025-02-07 21:04:20,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-07 21:04:20,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-07 21:04:20,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:20,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:20,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:20,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-02-07 21:04:20,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-02-07 21:04:20,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423137988] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:20,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2025-02-07 21:04:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671118244] [2025-02-07 21:04:20,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:20,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 21:04:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:20,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 21:04:20,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-07 21:04:20,657 INFO L87 Difference]: Start difference. First operand 63 states and 105 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:20,754 INFO L93 Difference]: Finished difference Result 88 states and 164 transitions. [2025-02-07 21:04:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:04:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 106 [2025-02-07 21:04:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:20,756 INFO L225 Difference]: With dead ends: 88 [2025-02-07 21:04:20,756 INFO L226 Difference]: Without dead ends: 84 [2025-02-07 21:04:20,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:04:20,757 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:20,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 114 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-07 21:04:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 63. [2025-02-07 21:04:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 43 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2025-02-07 21:04:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 105 transitions. [2025-02-07 21:04:20,774 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 105 transitions. Word has length 106 [2025-02-07 21:04:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:20,774 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 105 transitions. [2025-02-07 21:04:20,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 105 transitions. [2025-02-07 21:04:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-07 21:04:20,777 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:20,777 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:20,782 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 [2025-02-07 21:04:20,977 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,SelfDestructingSolverStorable7 [2025-02-07 21:04:20,978 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:20,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash 434659535, now seen corresponding path program 1 times [2025-02-07 21:04:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971440231] [2025-02-07 21:04:20,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:20,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-07 21:04:21,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-07 21:04:21,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:21,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 69 proven. 74 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2025-02-07 21:04:21,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971440231] [2025-02-07 21:04:21,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971440231] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681541608] [2025-02-07 21:04:21,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:21,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:21,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:21,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 21:04:21,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-07 21:04:21,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-07 21:04:21,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:21,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:21,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 21:04:21,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 77 proven. 83 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2025-02-07 21:04:21,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 77 proven. 91 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-02-07 21:04:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681541608] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:22,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:22,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13] total 18 [2025-02-07 21:04:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117742958] [2025-02-07 21:04:22,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:22,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 21:04:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:22,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 21:04:22,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-02-07 21:04:22,380 INFO L87 Difference]: Start difference. First operand 63 states and 105 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 12 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2025-02-07 21:04:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:22,754 INFO L93 Difference]: Finished difference Result 108 states and 215 transitions. [2025-02-07 21:04:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 21:04:22,755 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 12 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) Word has length 119 [2025-02-07 21:04:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:22,756 INFO L225 Difference]: With dead ends: 108 [2025-02-07 21:04:22,756 INFO L226 Difference]: Without dead ends: 66 [2025-02-07 21:04:22,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2025-02-07 21:04:22,757 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:22,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 337 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 21:04:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-07 21:04:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-02-07 21:04:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (35), 16 states have call predecessors, (35), 11 states have call successors, (35) [2025-02-07 21:04:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2025-02-07 21:04:22,810 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 119 [2025-02-07 21:04:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:22,810 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2025-02-07 21:04:22,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 12 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2025-02-07 21:04:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2025-02-07 21:04:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-07 21:04:22,811 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:22,826 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:23,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:23,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:23,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 403125880, now seen corresponding path program 2 times [2025-02-07 21:04:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865478943] [2025-02-07 21:04:23,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:23,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-02-07 21:04:23,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-02-07 21:04:23,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:23,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-02-07 21:04:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865478943] [2025-02-07 21:04:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865478943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067417015] [2025-02-07 21:04:23,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:23,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:23,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:23,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 21:04:23,148 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 92 statements into 2 equivalence classes. [2025-02-07 21:04:23,172 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-02-07 21:04:23,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:23,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:23,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:23,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-02-07 21:04:23,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-02-07 21:04:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067417015] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:23,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:23,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2025-02-07 21:04:23,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780711006] [2025-02-07 21:04:23,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:23,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 21:04:23,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:23,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 21:04:23,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-07 21:04:23,736 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:23,868 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2025-02-07 21:04:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:04:23,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 92 [2025-02-07 21:04:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:23,873 INFO L225 Difference]: With dead ends: 84 [2025-02-07 21:04:23,873 INFO L226 Difference]: Without dead ends: 80 [2025-02-07 21:04:23,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:04:23,873 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:23,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 103 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-07 21:04:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2025-02-07 21:04:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 11 states have call successors, (11), 4 states have call predecessors, (11), 12 states have return successors, (35), 16 states have call predecessors, (35), 11 states have call successors, (35) [2025-02-07 21:04:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2025-02-07 21:04:23,894 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 92 [2025-02-07 21:04:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:23,894 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2025-02-07 21:04:23,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 11 states have internal predecessors, (44), 7 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2025-02-07 21:04:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-07 21:04:23,895 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:23,895 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:23,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 21:04:24,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:24,099 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:24,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 951551356, now seen corresponding path program 3 times [2025-02-07 21:04:24,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:24,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659112014] [2025-02-07 21:04:24,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:04:24,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:24,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 6 equivalence classes. [2025-02-07 21:04:24,126 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 105 of 105 statements. [2025-02-07 21:04:24,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:04:24,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-02-07 21:04:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659112014] [2025-02-07 21:04:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659112014] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066796635] [2025-02-07 21:04:24,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:04:24,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:24,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:24,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 21:04:24,676 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 105 statements into 6 equivalence classes. [2025-02-07 21:04:24,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 105 of 105 statements. [2025-02-07 21:04:24,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:04:24,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:24,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-07 21:04:24,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-02-07 21:04:24,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-02-07 21:04:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066796635] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:25,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2025-02-07 21:04:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687814248] [2025-02-07 21:04:25,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:25,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-07 21:04:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:25,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-07 21:04:25,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2025-02-07 21:04:25,301 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-07 21:04:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:25,686 INFO L93 Difference]: Finished difference Result 125 states and 215 transitions. [2025-02-07 21:04:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 21:04:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) Word has length 105 [2025-02-07 21:04:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:25,691 INFO L225 Difference]: With dead ends: 125 [2025-02-07 21:04:25,691 INFO L226 Difference]: Without dead ends: 121 [2025-02-07 21:04:25,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2025-02-07 21:04:25,692 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:25,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1049 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 21:04:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-07 21:04:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 89. [2025-02-07 21:04:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 59 states have internal predecessors, (62), 15 states have call successors, (15), 4 states have call predecessors, (15), 17 states have return successors, (73), 25 states have call predecessors, (73), 15 states have call successors, (73) [2025-02-07 21:04:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2025-02-07 21:04:25,722 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 105 [2025-02-07 21:04:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:25,722 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2025-02-07 21:04:25,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 15 states have internal predecessors, (38), 5 states have call successors, (7), 1 states have call predecessors, (7), 8 states have return successors, (17), 17 states have call predecessors, (17), 5 states have call successors, (17) [2025-02-07 21:04:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2025-02-07 21:04:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-07 21:04:25,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:25,725 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:25,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:25,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:25,929 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:25,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1943377412, now seen corresponding path program 4 times [2025-02-07 21:04:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545500272] [2025-02-07 21:04:25,930 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:04:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:25,936 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 106 statements into 2 equivalence classes. [2025-02-07 21:04:25,940 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 90 of 106 statements. [2025-02-07 21:04:25,940 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:04:25,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 74 proven. 102 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-07 21:04:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545500272] [2025-02-07 21:04:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545500272] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292325018] [2025-02-07 21:04:26,132 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:04:26,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:26,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 21:04:26,212 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 106 statements into 2 equivalence classes. [2025-02-07 21:04:26,243 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 90 of 106 statements. [2025-02-07 21:04:26,244 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:04:26,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:26,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 21:04:26,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 74 proven. 102 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-07 21:04:26,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 74 proven. 108 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-07 21:04:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292325018] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:27,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 17] total 21 [2025-02-07 21:04:27,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808215051] [2025-02-07 21:04:27,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:27,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 21:04:27,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:27,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 21:04:27,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:04:27,036 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 15 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) [2025-02-07 21:04:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:27,426 INFO L93 Difference]: Finished difference Result 228 states and 490 transitions. [2025-02-07 21:04:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 21:04:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 15 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) Word has length 106 [2025-02-07 21:04:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:27,433 INFO L225 Difference]: With dead ends: 228 [2025-02-07 21:04:27,433 INFO L226 Difference]: Without dead ends: 139 [2025-02-07 21:04:27,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 205 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 21:04:27,439 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 76 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:27,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 295 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:04:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-02-07 21:04:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2025-02-07 21:04:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 79 states have internal predecessors, (92), 21 states have call successors, (21), 11 states have call predecessors, (21), 19 states have return successors, (81), 31 states have call predecessors, (81), 21 states have call successors, (81) [2025-02-07 21:04:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2025-02-07 21:04:27,496 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 106 [2025-02-07 21:04:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:27,496 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2025-02-07 21:04:27,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 states have internal predecessors, (73), 15 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) [2025-02-07 21:04:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2025-02-07 21:04:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-02-07 21:04:27,498 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:27,498 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:27,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 21:04:27,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 21:04:27,699 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:27,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash -762096573, now seen corresponding path program 1 times [2025-02-07 21:04:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:27,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405316704] [2025-02-07 21:04:27,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:27,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:27,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-07 21:04:27,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-07 21:04:27,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:27,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-07 21:04:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405316704] [2025-02-07 21:04:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405316704] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54341383] [2025-02-07 21:04:27,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:27,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:27,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:27,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:27,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 21:04:27,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-02-07 21:04:28,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-02-07 21:04:28,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:28,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:28,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 21:04:28,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-07 21:04:28,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2025-02-07 21:04:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54341383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2025-02-07 21:04:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646970996] [2025-02-07 21:04:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 21:04:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:28,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 21:04:28,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-07 21:04:28,854 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2025-02-07 21:04:29,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:29,023 INFO L93 Difference]: Finished difference Result 147 states and 240 transitions. [2025-02-07 21:04:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:04:29,023 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 106 [2025-02-07 21:04:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:29,024 INFO L225 Difference]: With dead ends: 147 [2025-02-07 21:04:29,025 INFO L226 Difference]: Without dead ends: 96 [2025-02-07 21:04:29,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 204 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-02-07 21:04:29,026 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:29,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 296 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-07 21:04:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-02-07 21:04:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 64 states have internal predecessors, (76), 15 states have call successors, (15), 10 states have call predecessors, (15), 15 states have return successors, (37), 21 states have call predecessors, (37), 15 states have call successors, (37) [2025-02-07 21:04:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2025-02-07 21:04:29,034 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 106 [2025-02-07 21:04:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:29,034 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2025-02-07 21:04:29,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 15 states have internal predecessors, (55), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2025-02-07 21:04:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2025-02-07 21:04:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-07 21:04:29,036 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:29,036 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:29,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 21:04:29,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-07 21:04:29,240 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:29,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2116067114, now seen corresponding path program 2 times [2025-02-07 21:04:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:29,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999820479] [2025-02-07 21:04:29,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:29,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:29,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-02-07 21:04:29,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 21:04:29,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:29,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 105 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2025-02-07 21:04:29,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999820479] [2025-02-07 21:04:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999820479] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472222688] [2025-02-07 21:04:29,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:29,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:29,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:04:29,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 21:04:29,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-02-07 21:04:29,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 21:04:29,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:29,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:29,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 21:04:29,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 49 proven. 165 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-02-07 21:04:29,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 49 proven. 179 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2025-02-07 21:04:30,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472222688] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:30,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:30,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 21 [2025-02-07 21:04:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317358061] [2025-02-07 21:04:30,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:30,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 21:04:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:30,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 21:04:30,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:04:30,407 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2025-02-07 21:04:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:30,591 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2025-02-07 21:04:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 21:04:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) Word has length 132 [2025-02-07 21:04:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:30,592 INFO L225 Difference]: With dead ends: 119 [2025-02-07 21:04:30,592 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 21:04:30,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 247 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2025-02-07 21:04:30,593 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:30,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 311 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 21:04:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 21:04:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-02-07 21:04:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 21:04:30,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 132 [2025-02-07 21:04:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:30,594 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 21:04:30,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.4) internal successors, (68), 21 states have internal predecessors, (68), 15 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 11 states have call predecessors, (26), 15 states have call successors, (26) [2025-02-07 21:04:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 21:04:30,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 21:04:30,596 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 21:04:30,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:30,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:30,800 INFO L422 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:30,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 21:04:35,023 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 21:04:35,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 09:04:35 BoogieIcfgContainer [2025-02-07 21:04:35,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 21:04:35,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 21:04:35,027 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 21:04:35,027 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 21:04:35,028 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:15" (3/4) ... [2025-02-07 21:04:35,029 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 21:04:35,032 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo2 [2025-02-07 21:04:35,032 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fibo1 [2025-02-07 21:04:35,034 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-07 21:04:35,035 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 21:04:35,035 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 21:04:35,035 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 21:04:35,080 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 21:04:35,081 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 21:04:35,081 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 21:04:35,081 INFO L158 Benchmark]: Toolchain (without parser) took 19843.88ms. Allocated memory was 142.6MB in the beginning and 738.2MB in the end (delta: 595.6MB). Free memory was 106.4MB in the beginning and 681.9MB in the end (delta: -575.5MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:35,081 INFO L158 Benchmark]: CDTParser took 0.89ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:35,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.58ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 95.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:35,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.00ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:35,082 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:35,082 INFO L158 Benchmark]: IcfgBuilder took 194.76ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 81.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:35,082 INFO L158 Benchmark]: TraceAbstraction took 19398.61ms. Allocated memory was 142.6MB in the beginning and 738.2MB in the end (delta: 595.6MB). Free memory was 80.9MB in the beginning and 685.8MB in the end (delta: -605.0MB). Peak memory consumption was 410.2MB. Max. memory is 16.1GB. [2025-02-07 21:04:35,083 INFO L158 Benchmark]: Witness Printer took 53.73ms. Allocated memory is still 738.2MB. Free memory was 685.8MB in the beginning and 681.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:35,084 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.58ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 95.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.00ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 94.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 194.76ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 81.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19398.61ms. Allocated memory was 142.6MB in the beginning and 738.2MB in the end (delta: 595.6MB). Free memory was 80.9MB in the beginning and 685.8MB in the end (delta: -605.0MB). Peak memory consumption was 410.2MB. Max. memory is 16.1GB. * Witness Printer took 53.73ms. Allocated memory is still 738.2MB. Free memory was 685.8MB in the beginning and 681.9MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 14, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 300 mSDsluCounter, 3421 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3026 mSDsCounter, 274 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2972 IncrementalHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 274 mSolverCounterUnsat, 395 mSDtfsCounter, 2972 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1783 SyntacticMatches, 50 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=12, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 140 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1883 NumberOfCodeBlocks, 1851 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2777 ConstructedInterpolants, 0 QuantifiedInterpolants, 5445 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2253 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 4660/6507 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-07 21:04:35,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE