./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-187.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:12,841 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:12,934 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305917f-f5f3-4541-a91a-d40182416d51/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:12,939 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:12,939 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:12,970 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:12,971 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:12,971 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:12,972 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:12,972 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:12,972 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:12,972 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:12,972 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:12,973 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:12,973 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:12,973 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:12,973 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:12,973 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:12,973 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:12,973 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:12,973 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:12,975 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:12,975 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:12,975 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:12,975 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:12,976 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:12,976 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:13,297 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:13,311 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:13,314 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:13,317 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:13,317 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:13,319 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305917f-f5f3-4541-a91a-d40182416d51/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-187.smt2
[2025-04-28 21:21:13,320 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:13,325 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:13,533 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6305917f-f5f3-4541-a91a-d40182416d51/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-187.smt2
[2025-04-28 21:21:13,541 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:13,544 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:13,545 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:13,546 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:13,546 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:13,549 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,576 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13 Unit
[2025-04-28 21:21:13,577 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:13,579 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:13,579 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:13,579 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:13,601 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,602 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,632 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,633 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,636 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,638 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,643 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,644 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,645 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,664 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:13,666 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:13,666 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:13,667 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:13,668 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (1/1) ...
[2025-04-28 21:21:13,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:13,686 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:13,701 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 21:21:13,705 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 21:21:13,721 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:13,721 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:13,722 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:13,722 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure inv_main38 given in one single declaration
[2025-04-28 21:21:13,722 INFO  L130     BoogieDeclarations]: Found specification of procedure inv_main38
[2025-04-28 21:21:13,722 INFO  L138     BoogieDeclarations]: Found implementation of procedure inv_main38
[2025-04-28 21:21:13,722 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure inv_main28 given in one single declaration
[2025-04-28 21:21:13,722 INFO  L130     BoogieDeclarations]: Found specification of procedure inv_main28
[2025-04-28 21:21:13,722 INFO  L138     BoogieDeclarations]: Found implementation of procedure inv_main28
[2025-04-28 21:21:13,722 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure inv_main12 given in one single declaration
[2025-04-28 21:21:13,722 INFO  L130     BoogieDeclarations]: Found specification of procedure inv_main12
[2025-04-28 21:21:13,722 INFO  L138     BoogieDeclarations]: Found implementation of procedure inv_main12
[2025-04-28 21:21:13,723 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure inv_main3 given in one single declaration
[2025-04-28 21:21:13,724 INFO  L130     BoogieDeclarations]: Found specification of procedure inv_main3
[2025-04-28 21:21:13,724 INFO  L138     BoogieDeclarations]: Found implementation of procedure inv_main3
[2025-04-28 21:21:13,725 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:13,725 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:13,725 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:13,790 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:13,793 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:13,945 INFO  L?                        ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:13,945 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:13,960 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:13,961 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:13,961 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:13 BoogieIcfgContainer
[2025-04-28 21:21:13,961 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:13,964 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:13,965 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:13,969 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:13,970 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:13" (1/3) ...
[2025-04-28 21:21:13,971 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d81312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:13, skipping insertion in model container
[2025-04-28 21:21:13,971 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:13" (2/3) ...
[2025-04-28 21:21:13,971 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d81312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:13, skipping insertion in model container
[2025-04-28 21:21:13,972 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:13" (3/3) ...
[2025-04-28 21:21:13,973 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:13,990 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:13,992 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 6 procedures, 26 locations, 39 edges, 6 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:14,041 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:14,059 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;@119d2b14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:14,059 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:14,064 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 15 states have internal predecessors, (15), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8)
[2025-04-28 21:21:14,073 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2025-04-28 21:21:14,073 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:14,074 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]
[2025-04-28 21:21:14,074 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:14,080 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:14,081 INFO  L85        PathProgramCache]: Analyzing trace with hash 1218426727, now seen corresponding path program 1 times
[2025-04-28 21:21:14,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:14,092 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275304449]
[2025-04-28 21:21:14,092 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:14,092 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:14,137 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes.
[2025-04-28 21:21:14,168 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements.
[2025-04-28 21:21:14,168 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:14,169 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:14,479 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 21:21:14,479 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:14,484 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275304449]
[2025-04-28 21:21:14,485 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275304449] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:14,485 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:14,490 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-04-28 21:21:14,492 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473883662]
[2025-04-28 21:21:14,494 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:14,501 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-04-28 21:21:14,501 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:14,535 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-04-28 21:21:14,536 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:14,538 INFO  L87              Difference]: Start difference. First operand  has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 15 states have internal predecessors, (15), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 7 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2025-04-28 21:21:14,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:14,694 INFO  L93              Difference]: Finished difference Result 32 states and 41 transitions.
[2025-04-28 21:21:14,695 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-04-28 21:21:14,697 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20
[2025-04-28 21:21:14,697 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:14,704 INFO  L225             Difference]: With dead ends: 32
[2025-04-28 21:21:14,704 INFO  L226             Difference]: Without dead ends: 30
[2025-04-28 21:21:14,707 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2025-04-28 21:21:14,711 INFO  L437           NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:14,713 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:14,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2025-04-28 21:21:14,767 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2025-04-28 21:21:14,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 12 states have (on average 1.25) internal successors, (15), 15 states have internal predecessors, (15), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12)
[2025-04-28 21:21:14,804 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions.
[2025-04-28 21:21:14,807 INFO  L79                 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 20
[2025-04-28 21:21:14,808 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:14,808 INFO  L485      AbstractCegarLoop]: Abstraction has 28 states and 35 transitions.
[2025-04-28 21:21:14,808 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)
[2025-04-28 21:21:14,808 INFO  L278                IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions.
[2025-04-28 21:21:14,810 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2025-04-28 21:21:14,810 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:14,810 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]
[2025-04-28 21:21:14,811 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:14,811 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:14,812 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:14,812 INFO  L85        PathProgramCache]: Analyzing trace with hash -2112884467, now seen corresponding path program 1 times
[2025-04-28 21:21:14,812 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:14,812 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097721223]
[2025-04-28 21:21:14,813 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:14,813 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:14,827 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-04-28 21:21:14,861 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-04-28 21:21:14,861 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:14,861 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is sat
[2025-04-28 21:21:14,862 INFO  L348             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2025-04-28 21:21:14,871 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-04-28 21:21:14,892 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-04-28 21:21:14,893 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:14,893 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is sat
[2025-04-28 21:21:14,914 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2025-04-28 21:21:14,915 INFO  L340         BasicCegarLoop]: Counterexample is feasible
[2025-04-28 21:21:14,917 INFO  L790   garLoopResultBuilder]: Registering result UNSAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:14,919 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:14,923 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1]
[2025-04-28 21:21:14,959 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:14,968 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:14 BoogieIcfgContainer
[2025-04-28 21:21:14,968 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:14,969 INFO  L158              Benchmark]: Toolchain (without parser) took 1426.41ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 200.7MB in the end (delta: -35.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,969 INFO  L158              Benchmark]: SmtParser took 0.33ms. Allocated memory is still 234.9MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,970 INFO  L158              Benchmark]: ChcToBoogie took 32.34ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 164.7MB in the end (delta: 898.9kB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,970 INFO  L158              Benchmark]: Boogie Preprocessor took 86.61ms. Allocated memory is still 234.9MB. Free memory was 164.7MB in the beginning and 162.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,970 INFO  L158              Benchmark]: RCFGBuilder took 295.39ms. Allocated memory is still 234.9MB. Free memory was 162.4MB in the beginning and 152.7MB in the end (delta: 9.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,979 INFO  L158              Benchmark]: TraceAbstraction took 1003.90ms. Allocated memory is still 234.9MB. Free memory was 152.2MB in the beginning and 200.7MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:14,980 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.33ms. Allocated memory is still 234.9MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 32.34ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 164.7MB in the end (delta: 898.9kB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 86.61ms. Allocated memory is still 234.9MB. Free memory was 164.7MB in the beginning and 162.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 295.39ms. Allocated memory is still 234.9MB. Free memory was 162.4MB in the beginning and 152.7MB in the end (delta: 9.7MB). There was no memory consumed. Max. memory is 33.6GB.
 * TraceAbstraction took 1003.90ms. Allocated memory is still 234.9MB. Free memory was 152.2MB in the beginning and 200.7MB in the end (delta: -48.5MB). There was no memory consumed. 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
  - CounterExampleResult [Unknown line] : the set of constraint Horn clauses is unsatisfiable
    the set of constraint Horn clauses is unsatisfiable
We found a FailurePath: 
[L0]  CALL  call False();
[L0]        assume hbv_False_C_1 != hbv_False_B_2;
      VAL   [hbv_False_B_2=-1, hbv_False_C_1=0]
[L0]  CALL  call inv_main38(hbv_False_A_3, hbv_False_D_4, hbv_False_B_2, hbv_False_C_1);
      VAL   [hhv_inv_main38_D_0=1, hhv_inv_main38_F_2=-1, hhv_inv_main38_G_3=0, hhv_inv_main38_I_1=-1]
[L0]        assume !(hbv_inv_main38_B_3 != 0 && hbv_inv_main38_C_1 + 1 <= hbv_inv_main38_H_2);
      VAL   [hbv_inv_main38_C_1=0, hbv_inv_main38_H_2=1, hhv_inv_main38_D_0=1, hhv_inv_main38_F_2=-1, hhv_inv_main38_G_3=0, hhv_inv_main38_I_1=-1]
[L0]  CALL  call inv_main28(hhv_inv_main38_D_0, hhv_inv_main38_I_1, hhv_inv_main38_F_2, hbv_inv_main38_H_2, hbv_inv_main38_E_4, hbv_inv_main38_C_1, hbv_inv_main38_A_5, hhv_inv_main38_G_3);
      VAL   [hhv_inv_main28_A_7=0, hhv_inv_main28_B_5=0, hhv_inv_main28_E_0=1, hhv_inv_main28_F_4=-1, hhv_inv_main28_G_2=-1, hhv_inv_main28_J_3=1, hhv_inv_main28_K_1=-1, hhv_inv_main28_v_11_6=-1]
[L0]        assume ((((hhv_inv_main28_K_1 == hhv_inv_main28_v_11_6 && hhv_inv_main28_A_7 == 0) && hhv_inv_main28_J_3 == hhv_inv_main28_E_0) && hhv_inv_main28_B_5 == 0) && hhv_inv_main28_F_4 == hhv_inv_main28_K_1) && !(hbv_inv_main28_H_3 != 0 && hbv_inv_main28_D_1 + 1 <= hbv_inv_main28_I_2);
      VAL   [hbv_inv_main28_D_1=1, hbv_inv_main28_I_2=1, hhv_inv_main28_A_7=0, hhv_inv_main28_B_5=0, hhv_inv_main28_E_0=1, hhv_inv_main28_F_4=-1, hhv_inv_main28_G_2=-1, hhv_inv_main28_J_3=1, hhv_inv_main28_K_1=-1, hhv_inv_main28_v_11_6=-1]
[L0]  CALL  call inv_main12(hhv_inv_main28_E_0, hhv_inv_main28_K_1, hbv_inv_main28_I_2, hbv_inv_main28_C_4, hbv_inv_main28_D_1, hbv_inv_main28_C_5, hhv_inv_main28_G_2);
      VAL   [hhv_inv_main12_A_6=-1, hhv_inv_main12_B_5=-1, hhv_inv_main12_C_4=1, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]        assume (((hbv_inv_main12_G_1 + 1 == hhv_inv_main12_C_4 && hhv_inv_main12_B_5 == 5 * hbv_inv_main12_G_1 + hhv_inv_main12_I_3) && hbv_inv_main12_E_3 != 0) && 5 * hbv_inv_main12_G_1 + hbv_inv_main12_K_2 + hhv_inv_main12_I_3 == hhv_inv_main12_A_6) && !(hhv_inv_main12_H_2 < hbv_inv_main12_G_1 + 1);
      VAL   [hbv_inv_main12_G_1=0, hbv_inv_main12_K_2=0, hhv_inv_main12_A_6=-1, hhv_inv_main12_B_5=-1, hhv_inv_main12_C_4=1, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]  CALL  call inv_main12(hhv_inv_main12_D_0, hhv_inv_main12_J_1, hhv_inv_main12_H_2, hhv_inv_main12_I_3, hbv_inv_main12_G_1, hbv_inv_main12_F_4, hbv_inv_main12_K_2);
      VAL   [hhv_inv_main12_A_6=0, hhv_inv_main12_B_5=0, hhv_inv_main12_C_4=0, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]        assume (((hhv_inv_main12_H_2 == hhv_inv_main12_D_0 && hhv_inv_main12_B_5 == 0) && hhv_inv_main12_I_3 == hhv_inv_main12_J_1) && hhv_inv_main12_A_6 == 0) && hhv_inv_main12_C_4 == 0;
      VAL   [hhv_inv_main12_A_6=0, hhv_inv_main12_B_5=0, hhv_inv_main12_C_4=0, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]  CALL  call inv_main3(hhv_inv_main12_D_0, hhv_inv_main12_J_1);
[L0]  RET   call inv_main3(hhv_inv_main12_D_0, hhv_inv_main12_J_1);
      VAL   [hhv_inv_main12_A_6=0, hhv_inv_main12_B_5=0, hhv_inv_main12_C_4=0, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]  RET   call inv_main12(hhv_inv_main12_D_0, hhv_inv_main12_J_1, hhv_inv_main12_H_2, hhv_inv_main12_I_3, hbv_inv_main12_G_1, hbv_inv_main12_F_4, hbv_inv_main12_K_2);
      VAL   [hbv_inv_main12_F_4=0, hbv_inv_main12_G_1=0, hbv_inv_main12_K_2=0, hhv_inv_main12_A_6=-1, hhv_inv_main12_B_5=-1, hhv_inv_main12_C_4=1, hhv_inv_main12_D_0=1, hhv_inv_main12_H_2=1, hhv_inv_main12_I_3=-1, hhv_inv_main12_J_1=-1]
[L0]  RET   call inv_main12(hhv_inv_main28_E_0, hhv_inv_main28_K_1, hbv_inv_main28_I_2, hbv_inv_main28_C_4, hbv_inv_main28_D_1, hbv_inv_main28_C_5, hhv_inv_main28_G_2);
      VAL   [hbv_inv_main28_C_4=-1, hbv_inv_main28_C_5=-1, hbv_inv_main28_D_1=1, hbv_inv_main28_I_2=1, hhv_inv_main28_A_7=0, hhv_inv_main28_B_5=0, hhv_inv_main28_E_0=1, hhv_inv_main28_F_4=-1, hhv_inv_main28_G_2=-1, hhv_inv_main28_J_3=1, hhv_inv_main28_K_1=-1, hhv_inv_main28_v_11_6=-1]
[L0]  RET   call inv_main28(hhv_inv_main38_D_0, hhv_inv_main38_I_1, hhv_inv_main38_F_2, hbv_inv_main38_H_2, hbv_inv_main38_E_4, hbv_inv_main38_C_1, hbv_inv_main38_A_5, hhv_inv_main38_G_3);
      VAL   [hbv_inv_main38_A_5=-1, hbv_inv_main38_C_1=0, hbv_inv_main38_E_4=-1, hbv_inv_main38_H_2=1, hhv_inv_main38_D_0=1, hhv_inv_main38_F_2=-1, hhv_inv_main38_G_3=0, hhv_inv_main38_I_1=-1]
[L0]  RET   call inv_main38(hbv_False_A_3, hbv_False_D_4, hbv_False_B_2, hbv_False_C_1);
      VAL   [hbv_False_A_3=1, hbv_False_B_2=-1, hbv_False_C_1=0, hbv_False_D_4=-1]
[L0]  RET   call False();
[L0]        assert false;

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 26 locations, 39 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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
RESULT: Ultimate proved your program to be incorrect!
[2025-04-28 21:21:14,999 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
unsat
