./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-142.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:11,083 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:11,198 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d43bf5f-53f7-4c68-86a0-bf40ab2bff38/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:11,203 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:11,204 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:11,244 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:11,244 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:11,246 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:11,246 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:11,247 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:11,248 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:11,248 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:11,248 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:11,249 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:11,249 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:11,249 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:11,249 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:11,249 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:11,249 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:11,249 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:11,250 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:11,250 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:11,250 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:11,251 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:11,251 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:11,251 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:11,252 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:11,636 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:11,649 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:11,651 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:11,654 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:11,655 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:11,657 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d43bf5f-53f7-4c68-86a0-bf40ab2bff38/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-142.smt2
[2025-04-28 21:21:11,660 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:11,667 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:11,990 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d43bf5f-53f7-4c68-86a0-bf40ab2bff38/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-142.smt2
[2025-04-28 21:21:11,995 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:11,998 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:12,000 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:12,000 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:12,001 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:12,004 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:12,052 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12 Unit
[2025-04-28 21:21:12,052 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:12,054 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:12,054 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:12,055 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:12,075 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,076 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,114 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,116 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,124 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,125 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,131 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,132 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,137 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,150 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:12,151 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:12,151 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:12,151 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:12,152 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (1/1) ...
[2025-04-28 21:21:12,155 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:12,173 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:12,188 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 21:21:12,191 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 21:21:12,207 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:12,207 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:12,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:12,207 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fail.DLRunknown.CLN3 given in one single declaration
[2025-04-28 21:21:12,208 INFO  L130     BoogieDeclarations]: Found specification of procedure fail.DLRunknown.CLN3
[2025-04-28 21:21:12,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure fail.DLRunknown.CLN3
[2025-04-28 21:21:12,208 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_1030.DLRunknown.CLN11 given in one single declaration
[2025-04-28 21:21:12,208 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_1030.DLRunknown.CLN11
[2025-04-28 21:21:12,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_1030.DLRunknown.CLN11
[2025-04-28 21:21:12,208 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_without_checking_1060.DLRunknown.CLN15 given in one single declaration
[2025-04-28 21:21:12,208 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_without_checking_1060.DLRunknown.CLN15
[2025-04-28 21:21:12,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_without_checking_1060.DLRunknown.CLN15
[2025-04-28 21:21:12,209 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_1030.DLRunknown.CLN12 given in one single declaration
[2025-04-28 21:21:12,209 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_1030.DLRunknown.CLN12
[2025-04-28 21:21:12,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_1030.DLRunknown.CLN12
[2025-04-28 21:21:12,209 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_1030.DLRunknown.CLN8 given in one single declaration
[2025-04-28 21:21:12,209 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_1030.DLRunknown.CLN8
[2025-04-28 21:21:12,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_1030.DLRunknown.CLN8
[2025-04-28 21:21:12,209 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_without_checking_1060.DLRunknown.CLN16 given in one single declaration
[2025-04-28 21:21:12,209 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_without_checking_1060.DLRunknown.CLN16
[2025-04-28 21:21:12,209 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_without_checking_1060.DLRunknown.CLN16
[2025-04-28 21:21:12,210 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fib_1030.DLRunknown.CLN7 given in one single declaration
[2025-04-28 21:21:12,210 INFO  L130     BoogieDeclarations]: Found specification of procedure fib_1030.DLRunknown.CLN7
[2025-04-28 21:21:12,210 INFO  L138     BoogieDeclarations]: Found implementation of procedure fib_1030.DLRunknown.CLN7
[2025-04-28 21:21:12,210 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:12,210 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:12,210 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:12,295 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:12,297 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:12,589 INFO  L?                        ?]: Removed 51 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:12,593 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:12,607 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:12,608 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:12,609 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:12 BoogieIcfgContainer
[2025-04-28 21:21:12,609 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:12,615 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:12,615 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:12,620 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:12,620 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:11" (1/3) ...
[2025-04-28 21:21:12,621 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa64105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:12, skipping insertion in model container
[2025-04-28 21:21:12,622 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:12" (2/3) ...
[2025-04-28 21:21:12,622 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa64105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:12, skipping insertion in model container
[2025-04-28 21:21:12,622 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:12" (3/3) ...
[2025-04-28 21:21:12,625 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:12,646 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:12,649 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 9 procedures, 48 locations, 86 edges, 9 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:12,703 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:12,718 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;@27e6a8c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:12,718 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:12,726 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 48 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 23 states have internal predecessors, (23), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21)
[2025-04-28 21:21:12,740 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:12,740 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:12,741 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:12,742 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:12,752 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:12,752 INFO  L85        PathProgramCache]: Analyzing trace with hash 89084253, now seen corresponding path program 1 times
[2025-04-28 21:21:12,762 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:12,763 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276129714]
[2025-04-28 21:21:12,763 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:12,765 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:12,815 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:12,860 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:12,863 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:12,863 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:13,379 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 21:21:13,380 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:13,380 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276129714]
[2025-04-28 21:21:13,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276129714] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:13,381 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:13,386 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:13,387 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465336186]
[2025-04-28 21:21:13,389 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:13,394 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:13,395 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:13,432 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:13,433 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:13,436 INFO  L87              Difference]: Start difference. First operand  has 48 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 23 states have internal predecessors, (23), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) Second operand  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:13,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:13,512 INFO  L93              Difference]: Finished difference Result 40 states and 57 transitions.
[2025-04-28 21:21:13,514 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:13,516 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:13,517 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:13,521 INFO  L225             Difference]: With dead ends: 40
[2025-04-28 21:21:13,522 INFO  L226             Difference]: Without dead ends: 0
[2025-04-28 21:21:13,547 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:13,553 INFO  L437           NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:13,555 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:13,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-04-28 21:21:13,617 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-04-28 21:21:13,620 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 21:21:13,624 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-04-28 21:21:13,625 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16
[2025-04-28 21:21:13,625 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:13,625 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-04-28 21:21:13,626 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:13,626 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-04-28 21:21:13,626 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-04-28 21:21:13,629 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:13,629 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:13,637 INFO  L422         BasicCegarLoop]: Path program histogram: [1]
[2025-04-28 21:21:13,644 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:13,652 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:13 BoogieIcfgContainer
[2025-04-28 21:21:13,652 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:13,653 INFO  L158              Benchmark]: Toolchain (without parser) took 1654.95ms. Allocated memory is still 234.9MB. Free memory was 161.7MB in the beginning and 197.2MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:13,653 INFO  L158              Benchmark]: SmtParser took 1.75ms. Allocated memory is still 234.9MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:13,654 INFO  L158              Benchmark]: ChcToBoogie took 53.05ms. Allocated memory is still 234.9MB. Free memory was 161.7MB in the beginning and 160.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:13,657 INFO  L158              Benchmark]: Boogie Preprocessor took 96.40ms. Allocated memory is still 234.9MB. Free memory was 160.3MB in the beginning and 158.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:13,658 INFO  L158              Benchmark]: RCFGBuilder took 459.02ms. Allocated memory is still 234.9MB. Free memory was 158.0MB in the beginning and 144.4MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-04-28 21:21:13,658 INFO  L158              Benchmark]: TraceAbstraction took 1037.37ms. Allocated memory is still 234.9MB. Free memory was 143.5MB in the beginning and 197.2MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:13,660 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 1.75ms. Allocated memory is still 234.9MB. Free memory is still 171.6MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 53.05ms. Allocated memory is still 234.9MB. Free memory was 161.7MB in the beginning and 160.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 96.40ms. Allocated memory is still 234.9MB. Free memory was 160.3MB in the beginning and 158.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 459.02ms. Allocated memory is still 234.9MB. Free memory was 158.0MB in the beginning and 144.4MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1037.37ms. Allocated memory is still 234.9MB. Free memory was 143.5MB in the beginning and 197.2MB in the end (delta: -53.7MB). 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
  - 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 9 procedures, 48 locations, 86 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 53 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 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
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-04-28 21:21:13,685 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...
sat
