./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-048.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:47,797 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:47,899 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbeb53-1a83-421e-ab9f-943573df046f/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:47,906 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:47,907 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:47,940 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:47,942 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:47,942 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:47,943 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:47,944 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:47,944 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:47,945 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:47,945 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:47,945 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:47,946 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:47,946 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:47,946 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:47,946 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:47,947 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:47,947 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:47,948 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:47,948 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:48,289 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:48,300 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:48,302 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:48,305 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:48,305 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:48,306 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbeb53-1a83-421e-ab9f-943573df046f/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-048.smt2
[2025-04-28 21:21:48,308 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:48,315 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:48,644 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbeb53-1a83-421e-ab9f-943573df046f/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-048.smt2
[2025-04-28 21:21:48,648 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:48,649 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:48,650 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:48,650 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:48,650 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:48,653 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,689 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48 Unit
[2025-04-28 21:21:48,689 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:48,690 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:48,690 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:48,690 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:48,707 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,707 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,738 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,739 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,743 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,744 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,746 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,747 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,748 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,762 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:48,763 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:48,763 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:48,764 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:48,765 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (1/1) ...
[2025-04-28 21:21:48,767 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:48,785 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:48,800 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2025-04-28 21:21:48,805 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-04-28 21:21:48,815 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:48,815 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:48,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:48,816 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:48,816 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:48,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:48,816 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:48,816 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:48,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:48,816 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__syn given in one single declaration
[2025-04-28 21:21:48,816 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__syn
[2025-04-28 21:21:48,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__syn
[2025-04-28 21:21:48,816 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE1__syn given in one single declaration
[2025-04-28 21:21:48,817 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE1__syn
[2025-04-28 21:21:48,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE1__syn
[2025-04-28 21:21:48,817 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__syn given in one single declaration
[2025-04-28 21:21:48,817 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__syn
[2025-04-28 21:21:48,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__syn
[2025-04-28 21:21:48,817 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__syn given in one single declaration
[2025-04-28 21:21:48,817 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__syn
[2025-04-28 21:21:48,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__syn
[2025-04-28 21:21:48,817 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__sem given in one single declaration
[2025-04-28 21:21:48,817 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__sem
[2025-04-28 21:21:48,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__sem
[2025-04-28 21:21:48,817 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__sem given in one single declaration
[2025-04-28 21:21:48,818 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__sem
[2025-04-28 21:21:48,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__sem
[2025-04-28 21:21:48,818 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__sem given in one single declaration
[2025-04-28 21:21:48,818 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__sem
[2025-04-28 21:21:48,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__sem
[2025-04-28 21:21:48,818 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__sem given in one single declaration
[2025-04-28 21:21:48,818 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__sem
[2025-04-28 21:21:48,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__sem
[2025-04-28 21:21:48,818 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE1__sem given in one single declaration
[2025-04-28 21:21:48,818 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE1__sem
[2025-04-28 21:21:48,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE1__sem
[2025-04-28 21:21:48,818 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:48,819 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:48,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:48,975 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:48,978 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:49,300 INFO  L?                        ?]: Removed 32 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:49,301 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:49,315 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:49,316 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:49,317 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:49 BoogieIcfgContainer
[2025-04-28 21:21:49,317 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:49,320 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:49,320 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:49,324 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:49,324 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:48" (1/3) ...
[2025-04-28 21:21:49,325 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329e57df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:49, skipping insertion in model container
[2025-04-28 21:21:49,325 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:48" (2/3) ...
[2025-04-28 21:21:49,325 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329e57df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:49, skipping insertion in model container
[2025-04-28 21:21:49,325 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:49" (3/3) ...
[2025-04-28 21:21:49,327 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:49,341 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:49,343 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 13 procedures, 52 locations, 66 edges, 13 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:49,387 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:49,401 INFO  L340      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=None, 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;@646c781e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:49,403 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:49,407 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 52 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2025-04-28 21:21:49,416 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2025-04-28 21:21:49,417 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:49,418 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:49,420 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:49,426 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:49,427 INFO  L85        PathProgramCache]: Analyzing trace with hash 296565048, now seen corresponding path program 1 times
[2025-04-28 21:21:49,436 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:49,436 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754103054]
[2025-04-28 21:21:49,437 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:49,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:49,507 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes.
[2025-04-28 21:21:49,654 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements.
[2025-04-28 21:21:49,654 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:49,655 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:50,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:50,619 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:50,619 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754103054]
[2025-04-28 21:21:50,620 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754103054] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:50,620 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:50,623 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2025-04-28 21:21:50,626 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82602342]
[2025-04-28 21:21:50,627 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:50,632 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-04-28 21:21:50,632 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:50,668 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-04-28 21:21:50,669 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:50,672 INFO  L87              Difference]: Start difference. First operand  has 52 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8)
[2025-04-28 21:21:51,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:51,078 INFO  L93              Difference]: Finished difference Result 56 states and 59 transitions.
[2025-04-28 21:21:51,081 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-04-28 21:21:51,083 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32
[2025-04-28 21:21:51,084 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:51,096 INFO  L225             Difference]: With dead ends: 56
[2025-04-28 21:21:51,096 INFO  L226             Difference]: Without dead ends: 52
[2025-04-28 21:21:51,098 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2025-04-28 21:21:51,103 INFO  L437           NwaCegarLoop]: 46 mSDtfsCounter, 4 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:51,104 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 389 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:51,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2025-04-28 21:21:51,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2025-04-28 21:21:51,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 13 states have call successors, (13), 12 states have call predecessors, (13), 13 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14)
[2025-04-28 21:21:51,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions.
[2025-04-28 21:21:51,149 INFO  L79                 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 32
[2025-04-28 21:21:51,149 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:51,150 INFO  L485      AbstractCegarLoop]: Abstraction has 52 states and 53 transitions.
[2025-04-28 21:21:51,150 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8)
[2025-04-28 21:21:51,150 INFO  L278                IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions.
[2025-04-28 21:21:51,152 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2025-04-28 21:21:51,152 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:51,152 INFO  L218           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:51,153 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:51,153 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:51,154 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:51,154 INFO  L85        PathProgramCache]: Analyzing trace with hash 1834123550, now seen corresponding path program 1 times
[2025-04-28 21:21:51,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:51,154 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716533437]
[2025-04-28 21:21:51,154 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:51,154 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:51,198 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes.
[2025-04-28 21:21:51,263 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements.
[2025-04-28 21:21:51,263 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:51,264 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:51,731 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2025-04-28 21:21:51,732 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:51,733 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716533437]
[2025-04-28 21:21:51,733 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716533437] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:51,733 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:51,733 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-04-28 21:21:51,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231840955]
[2025-04-28 21:21:51,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:51,735 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-04-28 21:21:51,738 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:51,739 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-04-28 21:21:51,739 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2025-04-28 21:21:51,739 INFO  L87              Difference]: Start difference. First operand 52 states and 53 transitions. Second operand  has 8 states, 5 states have (on average 5.0) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)
[2025-04-28 21:21:51,854 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:51,855 INFO  L93              Difference]: Finished difference Result 46 states and 47 transitions.
[2025-04-28 21:21:51,855 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-04-28 21:21:51,856 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 5 states have (on average 5.0) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 52
[2025-04-28 21:21:51,856 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:51,856 INFO  L225             Difference]: With dead ends: 46
[2025-04-28 21:21:51,856 INFO  L226             Difference]: Without dead ends: 0
[2025-04-28 21:21:51,857 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:51,857 INFO  L437           NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:51,858 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 281 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:51,860 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-04-28 21:21:51,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-04-28 21:21:51,861 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)
[2025-04-28 21:21:51,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-04-28 21:21:51,861 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52
[2025-04-28 21:21:51,861 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:51,861 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-04-28 21:21:51,862 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 5 states have (on average 5.0) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)
[2025-04-28 21:21:51,862 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-04-28 21:21:51,862 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-04-28 21:21:51,865 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:51,866 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:51,870 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1]
[2025-04-28 21:21:51,872 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:51,878 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:51 BoogieIcfgContainer
[2025-04-28 21:21:51,878 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:51,879 INFO  L158              Benchmark]: Toolchain (without parser) took 3230.00ms. Allocated memory is still 234.9MB. Free memory was 159.2MB in the beginning and 98.2MB in the end (delta: 61.0MB). Peak memory consumption was 54.4MB. Max. memory is 33.6GB.
[2025-04-28 21:21:51,879 INFO  L158              Benchmark]: SmtParser took 0.38ms. Allocated memory is still 234.9MB. Free memory was 172.6MB in the beginning and 172.1MB in the end (delta: 587.2kB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:51,881 INFO  L158              Benchmark]: ChcToBoogie took 39.65ms. Allocated memory is still 234.9MB. Free memory was 159.2MB in the beginning and 157.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:51,882 INFO  L158              Benchmark]: Boogie Preprocessor took 72.77ms. Allocated memory is still 234.9MB. Free memory was 157.5MB in the beginning and 155.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:51,883 INFO  L158              Benchmark]: RCFGBuilder took 553.99ms. Allocated memory is still 234.9MB. Free memory was 155.1MB in the beginning and 135.9MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-04-28 21:21:51,883 INFO  L158              Benchmark]: TraceAbstraction took 2558.34ms. Allocated memory is still 234.9MB. Free memory was 135.3MB in the beginning and 98.2MB in the end (delta: 37.1MB). Peak memory consumption was 20.9MB. Max. memory is 33.6GB.
[2025-04-28 21:21:51,885 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.38ms. Allocated memory is still 234.9MB. Free memory was 172.6MB in the beginning and 172.1MB in the end (delta: 587.2kB). There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 39.65ms. Allocated memory is still 234.9MB. Free memory was 159.2MB in the beginning and 157.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 72.77ms. Allocated memory is still 234.9MB. Free memory was 157.5MB in the beginning and 155.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 553.99ms. Allocated memory is still 234.9MB. Free memory was 155.1MB in the beginning and 135.9MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 2558.34ms. Allocated memory is still 234.9MB. Free memory was 135.3MB in the beginning and 98.2MB in the end (delta: 37.1MB). Peak memory consumption was 20.9MB. Max. memory is 33.6GB.
 * 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 [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 13 procedures, 52 locations, 66 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 670 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 89 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 3/3 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!
[2025-04-28 21:21:51,903 INFO  L540       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
sat
