./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-041.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:21,825 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:21,933 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3058b6e-d26b-4a46-9eed-c2fd864fb026/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:21,941 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:21,942 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:21,973 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:21,973 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:21,973 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:21,974 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:21,974 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:21,974 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:21,974 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:21,974 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:21,975 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:21,975 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:21,975 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:21,975 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:21,975 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:21,975 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:21,975 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:21,975 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:21,976 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:21,976 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:21,976 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:21,976 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:21,977 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:21,977 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:22,322 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:22,334 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:22,336 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:22,338 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:22,338 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:22,340 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3058b6e-d26b-4a46-9eed-c2fd864fb026/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-041.smt2
[2025-04-28 21:21:22,341 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:22,345 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:22,613 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3058b6e-d26b-4a46-9eed-c2fd864fb026/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-041.smt2
[2025-04-28 21:21:22,616 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:22,618 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:22,619 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:22,619 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:22,619 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:22,622 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,669 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22 Unit
[2025-04-28 21:21:22,670 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:22,671 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:22,671 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:22,672 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:22,692 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,692 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,717 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,717 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,721 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,722 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,724 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,725 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,726 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,747 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:22,752 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:22,752 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:22,752 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:22,753 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (1/1) ...
[2025-04-28 21:21:22,756 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:22,773 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:22,788 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 21:21:22,791 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 21:21:22,803 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:22,803 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:22,803 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:22,804 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ERR given in one single declaration
[2025-04-28 21:21:22,804 INFO  L130     BoogieDeclarations]: Found specification of procedure ERR
[2025-04-28 21:21:22,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure ERR
[2025-04-28 21:21:22,804 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure MAIN given in one single declaration
[2025-04-28 21:21:22,804 INFO  L130     BoogieDeclarations]: Found specification of procedure MAIN
[2025-04-28 21:21:22,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure MAIN
[2025-04-28 21:21:22,804 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_reset given in one single declaration
[2025-04-28 21:21:22,804 INFO  L130     BoogieDeclarations]: Found specification of procedure top_reset
[2025-04-28 21:21:22,804 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_reset
[2025-04-28 21:21:22,804 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure PRODUCER_CONSUMMER_reset given in one single declaration
[2025-04-28 21:21:22,805 INFO  L130     BoogieDeclarations]: Found specification of procedure PRODUCER_CONSUMMER_reset
[2025-04-28 21:21:22,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure PRODUCER_CONSUMMER_reset
[2025-04-28 21:21:22,805 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure First_reset given in one single declaration
[2025-04-28 21:21:22,805 INFO  L130     BoogieDeclarations]: Found specification of procedure First_reset
[2025-04-28 21:21:22,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure First_reset
[2025-04-28 21:21:22,805 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_reset given in one single declaration
[2025-04-28 21:21:22,805 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_reset
[2025-04-28 21:21:22,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_reset
[2025-04-28 21:21:22,805 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure INIT_STATE given in one single declaration
[2025-04-28 21:21:22,805 INFO  L130     BoogieDeclarations]: Found specification of procedure INIT_STATE
[2025-04-28 21:21:22,805 INFO  L138     BoogieDeclarations]: Found implementation of procedure INIT_STATE
[2025-04-28 21:21:22,806 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure top_step given in one single declaration
[2025-04-28 21:21:22,806 INFO  L130     BoogieDeclarations]: Found specification of procedure top_step
[2025-04-28 21:21:22,806 INFO  L138     BoogieDeclarations]: Found implementation of procedure top_step
[2025-04-28 21:21:22,808 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure excludes3_fun given in one single declaration
[2025-04-28 21:21:22,808 INFO  L130     BoogieDeclarations]: Found specification of procedure excludes3_fun
[2025-04-28 21:21:22,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure excludes3_fun
[2025-04-28 21:21:22,808 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure First_step given in one single declaration
[2025-04-28 21:21:22,809 INFO  L130     BoogieDeclarations]: Found specification of procedure First_step
[2025-04-28 21:21:22,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure First_step
[2025-04-28 21:21:22,809 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure PRODUCER_CONSUMMER_step given in one single declaration
[2025-04-28 21:21:22,809 INFO  L130     BoogieDeclarations]: Found specification of procedure PRODUCER_CONSUMMER_step
[2025-04-28 21:21:22,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure PRODUCER_CONSUMMER_step
[2025-04-28 21:21:22,809 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Sofar_step given in one single declaration
[2025-04-28 21:21:22,809 INFO  L130     BoogieDeclarations]: Found specification of procedure Sofar_step
[2025-04-28 21:21:22,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure Sofar_step
[2025-04-28 21:21:22,810 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:22,810 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:22,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:22,953 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:22,955 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:23,206 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:23,206 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:23,224 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:23,224 INFO  L312             CfgBuilder]: Removed 5 assume(true) statements.
[2025-04-28 21:21:23,225 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:23 BoogieIcfgContainer
[2025-04-28 21:21:23,225 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:23,232 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:23,232 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:23,236 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:23,236 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:22" (1/3) ...
[2025-04-28 21:21:23,237 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e84bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:23, skipping insertion in model container
[2025-04-28 21:21:23,237 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:22" (2/3) ...
[2025-04-28 21:21:23,237 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e84bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:23, skipping insertion in model container
[2025-04-28 21:21:23,238 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:23" (3/3) ...
[2025-04-28 21:21:23,240 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:23,256 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:23,259 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 14 procedures, 53 locations, 70 edges, 14 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:23,307 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:23,326 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;@16b7fa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:23,326 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:23,334 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 53 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 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 21:21:23,344 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2025-04-28 21:21:23,344 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:23,345 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]
[2025-04-28 21:21:23,346 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:23,352 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:23,352 INFO  L85        PathProgramCache]: Analyzing trace with hash -1142052538, now seen corresponding path program 1 times
[2025-04-28 21:21:23,361 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:23,362 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040333665]
[2025-04-28 21:21:23,363 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:23,364 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:23,422 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes.
[2025-04-28 21:21:23,487 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements.
[2025-04-28 21:21:23,487 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:23,488 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:25,313 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 21:21:25,315 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:25,315 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040333665]
[2025-04-28 21:21:25,316 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040333665] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:25,316 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:25,327 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2025-04-28 21:21:25,332 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199970804]
[2025-04-28 21:21:25,333 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:25,340 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2025-04-28 21:21:25,342 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:25,379 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2025-04-28 21:21:25,380 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182
[2025-04-28 21:21:25,387 INFO  L87              Difference]: Start difference. First operand  has 53 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 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 14 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13)
[2025-04-28 21:21:25,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:25,846 INFO  L93              Difference]: Finished difference Result 53 states and 55 transitions.
[2025-04-28 21:21:25,848 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2025-04-28 21:21:25,849 INFO  L79                 Accepts]: Start accepts. Automaton has  has 14 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) Word has length 49
[2025-04-28 21:21:25,850 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:25,859 INFO  L225             Difference]: With dead ends: 53
[2025-04-28 21:21:25,863 INFO  L226             Difference]: Without dead ends: 53
[2025-04-28 21:21:25,865 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:25,868 INFO  L437           NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:25,871 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 501 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:25,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2025-04-28 21:21:25,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2025-04-28 21:21:25,912 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 53 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 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 21:21:25,919 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions.
[2025-04-28 21:21:25,920 INFO  L79                 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 49
[2025-04-28 21:21:25,922 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:25,922 INFO  L485      AbstractCegarLoop]: Abstraction has 53 states and 55 transitions.
[2025-04-28 21:21:25,923 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 11 states have internal predecessors, (23), 7 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13)
[2025-04-28 21:21:25,923 INFO  L278                IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions.
[2025-04-28 21:21:25,926 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2025-04-28 21:21:25,927 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:25,928 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]
[2025-04-28 21:21:25,928 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:25,928 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:25,929 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:25,929 INFO  L85        PathProgramCache]: Analyzing trace with hash 136580254, now seen corresponding path program 1 times
[2025-04-28 21:21:25,930 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:25,930 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803280053]
[2025-04-28 21:21:25,930 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:25,930 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:25,969 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes.
[2025-04-28 21:21:26,007 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements.
[2025-04-28 21:21:26,011 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:26,011 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:29,310 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 21:21:29,310 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:29,310 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803280053]
[2025-04-28 21:21:29,311 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803280053] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:29,311 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302006633]
[2025-04-28 21:21:29,311 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:29,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:29,313 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:29,317 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 21:21:29,320 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:29,423 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes.
[2025-04-28 21:21:29,519 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements.
[2025-04-28 21:21:29,519 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:29,519 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:29,528 INFO  L256         TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 103 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:29,541 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:33,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2025-04-28 21:21:33,493 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
