./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-042.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:45,595 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:45,669 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f15121-ec9b-4319-bee1-895e55dc3485/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:45,674 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:45,674 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:45,696 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:45,697 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:45,697 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:45,697 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:45,697 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:45,698 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:45,698 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:45,698 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:45,698 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:45,698 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:45,698 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:45,698 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:45,699 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:45,699 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:45,700 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:45,700 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:46,012 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:46,025 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:46,028 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:46,030 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:46,031 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:46,032 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f15121-ec9b-4319-bee1-895e55dc3485/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-042.smt2
[2025-04-28 21:21:46,036 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:46,039 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:46,347 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f15121-ec9b-4319-bee1-895e55dc3485/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-042.smt2
[2025-04-28 21:21:46,354 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:46,356 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:46,356 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:46,357 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:46,357 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:46,359 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,408 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46 Unit
[2025-04-28 21:21:46,409 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:46,410 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:46,412 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:46,412 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:46,428 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,429 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,462 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,462 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,468 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,472 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,474 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,478 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,479 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,507 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:46,508 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:46,508 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:46,509 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:46,510 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,515 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:46,536 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:46,550 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 21:21:46,555 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 21:21:46,571 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:46,571 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:46,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:46,573 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ERR given in one single declaration
[2025-04-28 21:21:46,573 INFO  L130     BoogieDeclarations]: Found specification of procedure ERR
[2025-04-28 21:21:46,573 INFO  L138     BoogieDeclarations]: Found implementation of procedure ERR
[2025-04-28 21:21:46,573 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure MAIN given in one single declaration
[2025-04-28 21:21:46,573 INFO  L130     BoogieDeclarations]: Found specification of procedure MAIN
[2025-04-28 21:21:46,573 INFO  L138     BoogieDeclarations]: Found implementation of procedure MAIN
[2025-04-28 21:21:46,574 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_reset given in one single declaration
[2025-04-28 21:21:46,574 INFO  L130     BoogieDeclarations]: Found specification of procedure top_reset
[2025-04-28 21:21:46,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_reset
[2025-04-28 21:21:46,574 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure synapse_reset given in one single declaration
[2025-04-28 21:21:46,574 INFO  L130     BoogieDeclarations]: Found specification of procedure synapse_reset
[2025-04-28 21:21:46,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure synapse_reset
[2025-04-28 21:21:46,574 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure First_reset given in one single declaration
[2025-04-28 21:21:46,574 INFO  L130     BoogieDeclarations]: Found specification of procedure First_reset
[2025-04-28 21:21:46,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure First_reset
[2025-04-28 21:21:46,574 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_reset given in one single declaration
[2025-04-28 21:21:46,574 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_reset
[2025-04-28 21:21:46,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_reset
[2025-04-28 21:21:46,574 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure INIT_STATE given in one single declaration
[2025-04-28 21:21:46,574 INFO  L130     BoogieDeclarations]: Found specification of procedure INIT_STATE
[2025-04-28 21:21:46,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure INIT_STATE
[2025-04-28 21:21:46,575 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_step given in one single declaration
[2025-04-28 21:21:46,575 INFO  L130     BoogieDeclarations]: Found specification of procedure top_step
[2025-04-28 21:21:46,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_step
[2025-04-28 21:21:46,575 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure excludes3_fun given in one single declaration
[2025-04-28 21:21:46,575 INFO  L130     BoogieDeclarations]: Found specification of procedure excludes3_fun
[2025-04-28 21:21:46,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure excludes3_fun
[2025-04-28 21:21:46,575 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_step given in one single declaration
[2025-04-28 21:21:46,576 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_step
[2025-04-28 21:21:46,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_step
[2025-04-28 21:21:46,576 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure First_step given in one single declaration
[2025-04-28 21:21:46,577 INFO  L130     BoogieDeclarations]: Found specification of procedure First_step
[2025-04-28 21:21:46,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure First_step
[2025-04-28 21:21:46,577 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure synapse_step given in one single declaration
[2025-04-28 21:21:46,577 INFO  L130     BoogieDeclarations]: Found specification of procedure synapse_step
[2025-04-28 21:21:46,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure synapse_step
[2025-04-28 21:21:46,577 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:46,577 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:46,577 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:46,702 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:46,706 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:46,964 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:46,964 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:46,980 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:46,981 INFO  L312             CfgBuilder]: Removed 4 assume(true) statements.
[2025-04-28 21:21:46,981 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:46 BoogieIcfgContainer
[2025-04-28 21:21:46,981 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:46,984 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:46,984 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:46,989 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:46,989 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:46" (1/3) ...
[2025-04-28 21:21:46,990 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f6037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:46, skipping insertion in model container
[2025-04-28 21:21:46,991 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (2/3) ...
[2025-04-28 21:21:46,991 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f6037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:46, skipping insertion in model container
[2025-04-28 21:21:46,992 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:46" (3/3) ...
[2025-04-28 21:21:46,993 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:47,008 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:47,011 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 14 procedures, 54 locations, 71 edges, 14 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:47,058 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:47,084 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;@3a9022e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:47,084 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:47,088 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 54 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 14 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15)
[2025-04-28 21:21:47,099 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2025-04-28 21:21:47,099 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:47,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:47,100 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:47,106 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:47,107 INFO  L85        PathProgramCache]: Analyzing trace with hash -482243453, now seen corresponding path program 1 times
[2025-04-28 21:21:47,115 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:47,115 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829895683]
[2025-04-28 21:21:47,116 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:47,118 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:47,192 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes.
[2025-04-28 21:21:47,320 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements.
[2025-04-28 21:21:47,320 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:47,320 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:49,506 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 21:21:49,508 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:49,510 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829895683]
[2025-04-28 21:21:49,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829895683] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:49,512 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:49,515 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2025-04-28 21:21:49,518 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157269421]
[2025-04-28 21:21:49,519 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:49,526 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2025-04-28 21:21:49,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:49,606 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2025-04-28 21:21:49,607 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2025-04-28 21:21:49,610 INFO  L87              Difference]: Start difference. First operand  has 54 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 14 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Second operand  has 15 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13)
[2025-04-28 21:21:50,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:50,021 INFO  L93              Difference]: Finished difference Result 54 states and 56 transitions.
[2025-04-28 21:21:50,023 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2025-04-28 21:21:50,024 INFO  L79                 Accepts]: Start accepts. Automaton has  has 15 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) Word has length 50
[2025-04-28 21:21:50,025 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:50,033 INFO  L225             Difference]: With dead ends: 54
[2025-04-28 21:21:50,034 INFO  L226             Difference]: Without dead ends: 54
[2025-04-28 21:21:50,036 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272
[2025-04-28 21:21:50,039 INFO  L437           NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:50,040 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 553 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:50,059 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2025-04-28 21:21:50,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2025-04-28 21:21:50,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 25 states have (on average 1.0) internal successors, (25), 25 states have internal predecessors, (25), 14 states have call successors, (15), 13 states have call predecessors, (15), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16)
[2025-04-28 21:21:50,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions.
[2025-04-28 21:21:50,086 INFO  L79                 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 50
[2025-04-28 21:21:50,087 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:50,088 INFO  L485      AbstractCegarLoop]: Abstraction has 54 states and 56 transitions.
[2025-04-28 21:21:50,088 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 12 states have internal predecessors, (24), 8 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13)
[2025-04-28 21:21:50,088 INFO  L278                IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions.
[2025-04-28 21:21:50,090 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2025-04-28 21:21:50,091 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:50,091 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1]
[2025-04-28 21:21:50,091 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:50,091 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:50,092 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:50,092 INFO  L85        PathProgramCache]: Analyzing trace with hash -1182673964, now seen corresponding path program 1 times
[2025-04-28 21:21:50,092 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:50,092 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684162466]
[2025-04-28 21:21:50,093 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:50,093 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:50,132 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes.
[2025-04-28 21:21:50,205 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements.
[2025-04-28 21:21:50,209 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:50,209 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:55,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2025-04-28 21:21:55,979 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:55,980 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684162466]
[2025-04-28 21:21:55,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684162466] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:55,981 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606880242]
[2025-04-28 21:21:55,981 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:55,981 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:55,985 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:55,991 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 21:21:55,993 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:56,111 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes.
[2025-04-28 21:21:56,213 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements.
[2025-04-28 21:21:56,213 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:56,213 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:56,221 INFO  L256         TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 132 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:56,235 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:59,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2025-04-28 21:21:59,422 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
