./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-145.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:41,825 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:41,920 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5591591-8080-47a1-bcc0-50b8ae8b3b2c/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:41,925 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:41,925 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:41,963 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:41,965 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:41,965 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:41,966 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:41,966 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:41,967 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:41,968 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:41,968 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:41,968 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:41,968 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:41,968 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:41,970 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:41,970 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:41,970 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:41,970 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:41,970 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:41,970 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:41,971 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:41,971 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:41,971 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:41,972 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:41,972 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:42,310 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:42,322 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:42,324 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:42,327 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:42,328 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:42,329 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5591591-8080-47a1-bcc0-50b8ae8b3b2c/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-145.smt2
[2025-04-28 21:21:42,332 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:42,336 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:42,589 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5591591-8080-47a1-bcc0-50b8ae8b3b2c/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-145.smt2
[2025-04-28 21:21:42,592 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:42,594 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:42,596 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:42,596 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:42,596 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:42,602 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,638 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42 Unit
[2025-04-28 21:21:42,639 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:42,640 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:42,641 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:42,642 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:42,660 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,660 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,687 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,687 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,690 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,692 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,694 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,699 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,700 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,710 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:42,711 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:42,711 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:42,711 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:42,712 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:42,729 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:42,747 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 21:21:42,756 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 21:21:42,772 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:42,772 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:42,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:42,772 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure fail.DLRunknown.CLN24 given in one single declaration
[2025-04-28 21:21:42,772 INFO  L130     BoogieDeclarations]: Found specification of procedure fail.DLRunknown.CLN24
[2025-04-28 21:21:42,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure fail.DLRunknown.CLN24
[2025-04-28 21:21:42,772 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure f_1030.DLRunknown.CLN12 given in one single declaration
[2025-04-28 21:21:42,772 INFO  L130     BoogieDeclarations]: Found specification of procedure f_1030.DLRunknown.CLN12
[2025-04-28 21:21:42,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure f_1030.DLRunknown.CLN12
[2025-04-28 21:21:42,773 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure f_without_checking_1098.DLRunknown.CLN19 given in one single declaration
[2025-04-28 21:21:42,773 INFO  L130     BoogieDeclarations]: Found specification of procedure f_without_checking_1098.DLRunknown.CLN19
[2025-04-28 21:21:42,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure f_without_checking_1098.DLRunknown.CLN19
[2025-04-28 21:21:42,773 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main_1035.DLRunknown.CLN32 given in one single declaration
[2025-04-28 21:21:42,773 INFO  L130     BoogieDeclarations]: Found specification of procedure main_1035.DLRunknown.CLN32
[2025-04-28 21:21:42,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure main_1035.DLRunknown.CLN32
[2025-04-28 21:21:42,773 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure f_1030.DLRunknown.CLN5 given in one single declaration
[2025-04-28 21:21:42,773 INFO  L130     BoogieDeclarations]: Found specification of procedure f_1030.DLRunknown.CLN5
[2025-04-28 21:21:42,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure f_1030.DLRunknown.CLN5
[2025-04-28 21:21:42,773 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:42,774 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:42,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:42,848 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:42,850 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:42,988 INFO  L?                        ?]: Removed 30 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:42,989 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:43,000 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:43,000 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:43,001 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:43 BoogieIcfgContainer
[2025-04-28 21:21:43,001 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:43,004 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:43,004 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:43,009 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:43,009 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:42" (1/3) ...
[2025-04-28 21:21:43,010 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4271cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:43, skipping insertion in model container
[2025-04-28 21:21:43,010 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (2/3) ...
[2025-04-28 21:21:43,010 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4271cbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:43, skipping insertion in model container
[2025-04-28 21:21:43,010 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:43" (3/3) ...
[2025-04-28 21:21:43,012 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:43,029 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:43,032 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 7 procedures, 30 locations, 43 edges, 7 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:43,074 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:43,092 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;@4b4ea3fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:43,093 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:43,098 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 16 states have internal predecessors, (16), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9)
[2025-04-28 21:21:43,106 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2025-04-28 21:21:43,106 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:43,107 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:43,108 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:43,113 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:43,113 INFO  L85        PathProgramCache]: Analyzing trace with hash -1067438618, now seen corresponding path program 1 times
[2025-04-28 21:21:43,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:43,122 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218335418]
[2025-04-28 21:21:43,122 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:43,123 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:43,152 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes.
[2025-04-28 21:21:43,185 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements.
[2025-04-28 21:21:43,186 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:43,186 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:43,807 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 21:21:43,808 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:43,808 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218335418]
[2025-04-28 21:21:43,809 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218335418] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:43,810 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:43,814 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:43,815 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118856358]
[2025-04-28 21:21:43,818 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:43,824 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:43,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:43,850 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:43,850 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:43,852 INFO  L87              Difference]: Start difference. First operand  has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 16 states have internal predecessors, (16), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) Second operand  has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5)
[2025-04-28 21:21:44,007 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:44,008 INFO  L93              Difference]: Finished difference Result 32 states and 38 transitions.
[2025-04-28 21:21:44,010 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:44,011 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20
[2025-04-28 21:21:44,012 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:44,020 INFO  L225             Difference]: With dead ends: 32
[2025-04-28 21:21:44,020 INFO  L226             Difference]: Without dead ends: 32
[2025-04-28 21:21:44,023 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:44,027 INFO  L437           NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:44,029 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 32 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:44,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2025-04-28 21:21:44,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2025-04-28 21:21:44,146 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13)
[2025-04-28 21:21:44,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions.
[2025-04-28 21:21:44,162 INFO  L79                 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 20
[2025-04-28 21:21:44,163 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:44,163 INFO  L485      AbstractCegarLoop]: Abstraction has 32 states and 38 transitions.
[2025-04-28 21:21:44,163 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5)
[2025-04-28 21:21:44,163 INFO  L278                IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions.
[2025-04-28 21:21:44,165 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2025-04-28 21:21:44,169 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:44,170 INFO  L218           NwaCegarLoop]: trace histogram [3, 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]
[2025-04-28 21:21:44,170 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:44,170 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:44,171 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:44,175 INFO  L85        PathProgramCache]: Analyzing trace with hash 1218973426, now seen corresponding path program 1 times
[2025-04-28 21:21:44,176 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:44,176 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474421431]
[2025-04-28 21:21:44,176 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:44,176 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:44,207 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes.
[2025-04-28 21:21:44,233 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements.
[2025-04-28 21:21:44,234 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:44,234 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:44,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2025-04-28 21:21:44,363 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:44,363 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474421431]
[2025-04-28 21:21:44,364 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474421431] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:44,364 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:44,364 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:44,364 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679164489]
[2025-04-28 21:21:44,364 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:44,365 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:44,365 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:44,366 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:44,366 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:44,367 INFO  L87              Difference]: Start difference. First operand 32 states and 38 transitions. Second operand  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9)
[2025-04-28 21:21:44,402 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:44,404 INFO  L93              Difference]: Finished difference Result 32 states and 36 transitions.
[2025-04-28 21:21:44,405 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:44,405 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 40
[2025-04-28 21:21:44,406 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:44,406 INFO  L225             Difference]: With dead ends: 32
[2025-04-28 21:21:44,408 INFO  L226             Difference]: Without dead ends: 31
[2025-04-28 21:21:44,408 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:44,409 INFO  L437           NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:44,411 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:44,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2025-04-28 21:21:44,418 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2025-04-28 21:21:44,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11)
[2025-04-28 21:21:44,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2025-04-28 21:21:44,422 INFO  L79                 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 40
[2025-04-28 21:21:44,423 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:44,423 INFO  L485      AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2025-04-28 21:21:44,423 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 4 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9)
[2025-04-28 21:21:44,423 INFO  L278                IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2025-04-28 21:21:44,424 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2025-04-28 21:21:44,426 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:44,426 INFO  L218           NwaCegarLoop]: trace histogram [3, 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]
[2025-04-28 21:21:44,426 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:44,426 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:44,427 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:44,428 INFO  L85        PathProgramCache]: Analyzing trace with hash -1224601067, now seen corresponding path program 1 times
[2025-04-28 21:21:44,428 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:44,428 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229194885]
[2025-04-28 21:21:44,428 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:44,428 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:44,442 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes.
[2025-04-28 21:21:44,458 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements.
[2025-04-28 21:21:44,461 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:44,461 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:44,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2025-04-28 21:21:44,902 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:44,903 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229194885]
[2025-04-28 21:21:44,903 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229194885] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:44,903 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225486493]
[2025-04-28 21:21:44,903 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:44,903 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:44,908 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:44,915 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 21:21:44,916 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:44,970 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes.
[2025-04-28 21:21:45,033 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements.
[2025-04-28 21:21:45,033 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:45,034 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:45,040 INFO  L256         TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:45,048 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:45,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2025-04-28 21:21:45,206 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:47,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2025-04-28 21:21:47,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [225486493] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:47,633 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:47,633 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12
[2025-04-28 21:21:47,633 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059146358]
[2025-04-28 21:21:47,633 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:47,633 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2025-04-28 21:21:47,633 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:47,634 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2025-04-28 21:21:47,634 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2025-04-28 21:21:47,635 INFO  L87              Difference]: Start difference. First operand 31 states and 34 transitions. Second operand  has 12 states, 8 states have (on average 2.875) internal successors, (23), 12 states have internal predecessors, (23), 8 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14)
[2025-04-28 21:21:47,719 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:47,719 INFO  L93              Difference]: Finished difference Result 23 states and 25 transitions.
[2025-04-28 21:21:47,720 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-04-28 21:21:47,720 INFO  L79                 Accepts]: Start accepts. Automaton has  has 12 states, 8 states have (on average 2.875) internal successors, (23), 12 states have internal predecessors, (23), 8 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 40
[2025-04-28 21:21:47,720 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:47,720 INFO  L225             Difference]: With dead ends: 23
[2025-04-28 21:21:47,721 INFO  L226             Difference]: Without dead ends: 0
[2025-04-28 21:21:47,721 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2025-04-28 21:21:47,722 INFO  L437           NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:47,722 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 128 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:47,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-04-28 21:21:47,723 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-04-28 21:21:47,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-28 21:21:47,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-04-28 21:21:47,723 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40
[2025-04-28 21:21:47,723 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:47,723 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-04-28 21:21:47,725 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 8 states have (on average 2.875) internal successors, (23), 12 states have internal predecessors, (23), 8 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14)
[2025-04-28 21:21:47,725 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-04-28 21:21:47,725 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-04-28 21:21:47,727 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:47,733 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-04-28 21:21:47,928 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:47,931 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2025-04-28 21:21:47,934 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:47,937 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:47 BoogieIcfgContainer
[2025-04-28 21:21:47,937 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:47,938 INFO  L158              Benchmark]: Toolchain (without parser) took 5344.42ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 159.9MB in the beginning and 134.3MB in the end (delta: 25.6MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:47,938 INFO  L158              Benchmark]: SmtParser took 1.49ms. Allocated memory is still 234.9MB. Free memory is still 170.0MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:47,939 INFO  L158              Benchmark]: ChcToBoogie took 44.17ms. Allocated memory is still 234.9MB. Free memory was 159.9MB in the beginning and 159.2MB in the end (delta: 718.5kB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:47,939 INFO  L158              Benchmark]: Boogie Preprocessor took 69.77ms. Allocated memory is still 234.9MB. Free memory was 159.2MB in the beginning and 157.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:47,939 INFO  L158              Benchmark]: RCFGBuilder took 290.49ms. Allocated memory is still 234.9MB. Free memory was 157.0MB in the beginning and 146.3MB in the end (delta: 10.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-04-28 21:21:47,939 INFO  L158              Benchmark]: TraceAbstraction took 4933.33ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 145.6MB in the beginning and 134.3MB in the end (delta: 11.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:47,941 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 1.49ms. Allocated memory is still 234.9MB. Free memory is still 170.0MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 44.17ms. Allocated memory is still 234.9MB. Free memory was 159.9MB in the beginning and 159.2MB in the end (delta: 718.5kB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 69.77ms. Allocated memory is still 234.9MB. Free memory was 159.2MB in the beginning and 157.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 290.49ms. Allocated memory is still 234.9MB. Free memory was 157.0MB in the beginning and 146.3MB in the end (delta: 10.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 4933.33ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 145.6MB in the beginning and 134.3MB in the end (delta: 11.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 7 procedures, 30 locations, 43 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 76 mSDtfsCounter, 96 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=1, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 11 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 54/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-04-28 21:21:47,955 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
sat
