./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-046.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:34,186 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:34,278 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0004501-d9cc-43b2-b9ac-0b4024d3cddf/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:34,284 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:34,285 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:34,315 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:34,317 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:34,317 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:34,319 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:34,319 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:34,320 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:34,320 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:34,320 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:34,320 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:34,321 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:34,322 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:34,322 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:34,322 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:34,322 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:34,323 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:34,323 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:34,323 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:34,323 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:34,323 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:34,324 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:34,324 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:34,325 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:34,694 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:34,706 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:34,708 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:34,712 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:34,712 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:34,714 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0004501-d9cc-43b2-b9ac-0b4024d3cddf/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-046.smt2
[2025-04-28 21:21:34,715 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:34,719 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:34,973 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0004501-d9cc-43b2-b9ac-0b4024d3cddf/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-046.smt2
[2025-04-28 21:21:34,979 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:34,981 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:34,982 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:34,982 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:34,982 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:34,985 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:35,018 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35 Unit
[2025-04-28 21:21:35,020 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:35,021 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:35,022 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:35,022 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:35,040 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,040 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,071 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,073 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,076 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,078 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,083 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,084 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,085 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,104 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:35,105 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:35,105 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:35,105 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:35,106 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (1/1) ...
[2025-04-28 21:21:35,109 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:35,125 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:35,141 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 21:21:35,144 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 21:21:35,155 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:35,155 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:35,155 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:35,155 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ERR given in one single declaration
[2025-04-28 21:21:35,156 INFO  L130     BoogieDeclarations]: Found specification of procedure ERR
[2025-04-28 21:21:35,156 INFO  L138     BoogieDeclarations]: Found implementation of procedure ERR
[2025-04-28 21:21:35,156 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure MAIN given in one single declaration
[2025-04-28 21:21:35,156 INFO  L130     BoogieDeclarations]: Found specification of procedure MAIN
[2025-04-28 21:21:35,156 INFO  L138     BoogieDeclarations]: Found implementation of procedure MAIN
[2025-04-28 21:21:35,156 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_step given in one single declaration
[2025-04-28 21:21:35,156 INFO  L130     BoogieDeclarations]: Found specification of procedure top_step
[2025-04-28 21:21:35,156 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_step
[2025-04-28 21:21:35,156 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Store_step given in one single declaration
[2025-04-28 21:21:35,156 INFO  L130     BoogieDeclarations]: Found specification of procedure Store_step
[2025-04-28 21:21:35,156 INFO  L138     BoogieDeclarations]: Found implementation of procedure Store_step
[2025-04-28 21:21:35,156 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_step given in one single declaration
[2025-04-28 21:21:35,156 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_step
[2025-04-28 21:21:35,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_step
[2025-04-28 21:21:35,157 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_reset given in one single declaration
[2025-04-28 21:21:35,157 INFO  L130     BoogieDeclarations]: Found specification of procedure top_reset
[2025-04-28 21:21:35,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_reset
[2025-04-28 21:21:35,157 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_reset given in one single declaration
[2025-04-28 21:21:35,157 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_reset
[2025-04-28 21:21:35,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_reset
[2025-04-28 21:21:35,157 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Store_reset given in one single declaration
[2025-04-28 21:21:35,157 INFO  L130     BoogieDeclarations]: Found specification of procedure Store_reset
[2025-04-28 21:21:35,157 INFO  L138     BoogieDeclarations]: Found implementation of procedure Store_reset
[2025-04-28 21:21:35,157 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure INIT_STATE given in one single declaration
[2025-04-28 21:21:35,157 INFO  L130     BoogieDeclarations]: Found specification of procedure INIT_STATE
[2025-04-28 21:21:35,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure INIT_STATE
[2025-04-28 21:21:35,158 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:35,158 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:35,158 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:35,232 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:35,235 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:35,396 INFO  L?                        ?]: Removed 8 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:35,396 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:35,408 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:35,412 INFO  L312             CfgBuilder]: Removed 5 assume(true) statements.
[2025-04-28 21:21:35,412 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:35 BoogieIcfgContainer
[2025-04-28 21:21:35,412 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:35,416 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:35,417 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:35,421 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:35,421 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:34" (1/3) ...
[2025-04-28 21:21:35,422 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d34223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:35, skipping insertion in model container
[2025-04-28 21:21:35,422 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:35" (2/3) ...
[2025-04-28 21:21:35,422 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d34223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:35, skipping insertion in model container
[2025-04-28 21:21:35,423 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:35" (3/3) ...
[2025-04-28 21:21:35,425 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:35,444 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:35,447 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 11 procedures, 41 locations, 55 edges, 11 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:35,492 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:35,504 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;@8054439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:35,505 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:35,509 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 41 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 11 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12)
[2025-04-28 21:21:35,522 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:35,522 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:35,523 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, 1, 1, 1, 1, 1]
[2025-04-28 21:21:35,523 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:35,529 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:35,530 INFO  L85        PathProgramCache]: Analyzing trace with hash 1164087166, now seen corresponding path program 1 times
[2025-04-28 21:21:35,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:35,544 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015810284]
[2025-04-28 21:21:35,545 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:35,545 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:35,603 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:35,669 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:35,670 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:35,670 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:37,023 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 21:21:37,023 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:37,024 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015810284]
[2025-04-28 21:21:37,024 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015810284] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:37,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:37,028 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2025-04-28 21:21:37,029 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321797401]
[2025-04-28 21:21:37,031 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:37,037 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2025-04-28 21:21:37,037 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:37,067 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2025-04-28 21:21:37,068 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2025-04-28 21:21:37,071 INFO  L87              Difference]: Start difference. First operand  has 41 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 11 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Second operand  has 12 states, 8 states have (on average 2.125) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10)
[2025-04-28 21:21:37,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:37,452 INFO  L93              Difference]: Finished difference Result 41 states and 43 transitions.
[2025-04-28 21:21:37,459 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2025-04-28 21:21:37,461 INFO  L79                 Accepts]: Start accepts. Automaton has  has 12 states, 8 states have (on average 2.125) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 37
[2025-04-28 21:21:37,461 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:37,469 INFO  L225             Difference]: With dead ends: 41
[2025-04-28 21:21:37,469 INFO  L226             Difference]: Without dead ends: 41
[2025-04-28 21:21:37,471 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2025-04-28 21:21:37,475 INFO  L437           NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:37,475 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 315 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:37,491 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2025-04-28 21:21:37,516 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2025-04-28 21:21:37,517 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 41 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 11 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 12 states have call predecessors, (13), 11 states have call successors, (13)
[2025-04-28 21:21:37,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions.
[2025-04-28 21:21:37,523 INFO  L79                 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37
[2025-04-28 21:21:37,523 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:37,524 INFO  L485      AbstractCegarLoop]: Abstraction has 41 states and 43 transitions.
[2025-04-28 21:21:37,524 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 8 states have (on average 2.125) internal successors, (17), 10 states have internal predecessors, (17), 6 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10)
[2025-04-28 21:21:37,524 INFO  L278                IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions.
[2025-04-28 21:21:37,530 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2025-04-28 21:21:37,530 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:37,530 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:37,531 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:37,531 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:37,531 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:37,532 INFO  L85        PathProgramCache]: Analyzing trace with hash -1875840723, now seen corresponding path program 1 times
[2025-04-28 21:21:37,532 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:37,532 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790338129]
[2025-04-28 21:21:37,532 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:37,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:37,566 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes.
[2025-04-28 21:21:37,609 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements.
[2025-04-28 21:21:37,612 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:37,612 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:40,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:40,482 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:40,482 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790338129]
[2025-04-28 21:21:40,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790338129] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:40,482 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826829052]
[2025-04-28 21:21:40,482 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:40,482 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:40,485 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:40,490 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:40,491 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:40,562 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes.
[2025-04-28 21:21:40,619 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements.
[2025-04-28 21:21:40,619 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:40,620 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:40,624 INFO  L256         TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 69 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:40,637 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:44,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:44,283 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
