./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-181.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:43,035 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:43,136 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c87d192e-39b3-4249-948a-94e64fdf1b4c/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:43,143 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:43,144 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:43,179 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:43,180 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:43,180 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:43,182 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:43,182 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:43,182 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:43,183 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:43,183 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:43,183 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:43,183 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:43,184 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:43,185 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:43,185 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:43,185 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:43,185 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:43,186 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:43,186 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:43,186 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:43,186 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:43,186 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:43,187 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:43,187 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:43,509 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:43,521 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:43,524 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:43,528 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:43,528 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:43,530 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c87d192e-39b3-4249-948a-94e64fdf1b4c/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-181.smt2
[2025-04-28 21:21:43,533 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:43,538 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:43,751 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c87d192e-39b3-4249-948a-94e64fdf1b4c/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA/chc-comp24-LIA-181.smt2
[2025-04-28 21:21:43,754 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:43,755 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:43,756 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:43,757 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:43,757 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:43,759 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,782 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43 Unit
[2025-04-28 21:21:43,782 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:43,783 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:43,784 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:43,784 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:43,800 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,801 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,825 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,825 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,827 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,828 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,830 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,835 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,836 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,846 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:43,847 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:43,847 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:43,847 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:43,848 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (1/1) ...
[2025-04-28 21:21:43,851 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:43,865 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:43,880 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 21:21:43,885 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 21:21:43,893 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:43,894 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:43,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:43,894 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main given in one single declaration
[2025-04-28 21:21:43,894 INFO  L130     BoogieDeclarations]: Found specification of procedure %main
[2025-04-28 21:21:43,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main
[2025-04-28 21:21:43,894 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.2 given in one single declaration
[2025-04-28 21:21:43,894 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.2
[2025-04-28 21:21:43,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.2
[2025-04-28 21:21:43,895 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id given in one single declaration
[2025-04-28 21:21:43,895 INFO  L130     BoogieDeclarations]: Found specification of procedure %id
[2025-04-28 21:21:43,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id
[2025-04-28 21:21:43,895 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id.0 given in one single declaration
[2025-04-28 21:21:43,895 INFO  L130     BoogieDeclarations]: Found specification of procedure %id.0
[2025-04-28 21:21:43,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id.0
[2025-04-28 21:21:43,895 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id2 given in one single declaration
[2025-04-28 21:21:43,895 INFO  L130     BoogieDeclarations]: Found specification of procedure %id2
[2025-04-28 21:21:43,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id2
[2025-04-28 21:21:43,895 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id2.0 given in one single declaration
[2025-04-28 21:21:43,895 INFO  L130     BoogieDeclarations]: Found specification of procedure %id2.0
[2025-04-28 21:21:43,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id2.0
[2025-04-28 21:21:43,896 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id2.3 given in one single declaration
[2025-04-28 21:21:43,896 INFO  L130     BoogieDeclarations]: Found specification of procedure %id2.3
[2025-04-28 21:21:43,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id2.3
[2025-04-28 21:21:43,896 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %id.3 given in one single declaration
[2025-04-28 21:21:43,896 INFO  L130     BoogieDeclarations]: Found specification of procedure %id.3
[2025-04-28 21:21:43,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure %id.3
[2025-04-28 21:21:43,896 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:43,896 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:43,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:43,941 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:43,943 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:44,067 INFO  L?                        ?]: Removed 4 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:44,067 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:44,086 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:44,086 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2025-04-28 21:21:44,087 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:44 BoogieIcfgContainer
[2025-04-28 21:21:44,087 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:44,089 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:44,089 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:44,094 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:44,094 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:43" (1/3) ...
[2025-04-28 21:21:44,095 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513b4c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:44, skipping insertion in model container
[2025-04-28 21:21:44,095 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:43" (2/3) ...
[2025-04-28 21:21:44,096 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513b4c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:44, skipping insertion in model container
[2025-04-28 21:21:44,096 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:44" (3/3) ...
[2025-04-28 21:21:44,098 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:44,121 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:44,124 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 10 procedures, 41 locations, 56 edges, 10 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:44,181 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:44,200 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;@21f8dd8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:44,201 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:44,205 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 41 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2025-04-28 21:21:44,215 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2025-04-28 21:21:44,216 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:44,216 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]
[2025-04-28 21:21:44,217 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:44,225 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:44,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -703490049, now seen corresponding path program 1 times
[2025-04-28 21:21:44,235 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:44,236 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364556048]
[2025-04-28 21:21:44,237 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:44,238 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:44,282 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes.
[2025-04-28 21:21:44,297 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements.
[2025-04-28 21:21:44,297 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:44,297 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:44,433 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 21:21:44,433 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:44,434 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364556048]
[2025-04-28 21:21:44,434 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364556048] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:44,434 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:44,437 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-04-28 21:21:44,439 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218427622]
[2025-04-28 21:21:44,439 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:44,448 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-04-28 21:21:44,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:44,478 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-04-28 21:21:44,478 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-04-28 21:21:44,480 INFO  L87              Difference]: Start difference. First operand  has 41 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2025-04-28 21:21:44,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:44,528 INFO  L93              Difference]: Finished difference Result 43 states and 47 transitions.
[2025-04-28 21:21:44,534 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-04-28 21:21:44,536 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 21
[2025-04-28 21:21:44,536 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:44,544 INFO  L225             Difference]: With dead ends: 43
[2025-04-28 21:21:44,544 INFO  L226             Difference]: Without dead ends: 39
[2025-04-28 21:21:44,546 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-04-28 21:21:44,549 INFO  L437           NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:44,550 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:44,564 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2025-04-28 21:21:44,585 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2025-04-28 21:21:44,587 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2025-04-28 21:21:44,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions.
[2025-04-28 21:21:44,592 INFO  L79                 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 21
[2025-04-28 21:21:44,594 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:44,594 INFO  L485      AbstractCegarLoop]: Abstraction has 39 states and 43 transitions.
[2025-04-28 21:21:44,594 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2025-04-28 21:21:44,594 INFO  L278                IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions.
[2025-04-28 21:21:44,596 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2025-04-28 21:21:44,596 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:44,596 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]
[2025-04-28 21:21:44,596 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:44,597 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:44,597 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:44,597 INFO  L85        PathProgramCache]: Analyzing trace with hash -1512836675, now seen corresponding path program 1 times
[2025-04-28 21:21:44,597 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:44,598 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110726937]
[2025-04-28 21:21:44,598 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:44,598 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:44,606 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes.
[2025-04-28 21:21:44,612 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements.
[2025-04-28 21:21:44,612 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:44,612 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is sat
[2025-04-28 21:21:44,614 INFO  L348             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2025-04-28 21:21:44,618 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes.
[2025-04-28 21:21:44,627 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements.
[2025-04-28 21:21:44,627 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:44,627 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is sat
[2025-04-28 21:21:44,649 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2025-04-28 21:21:44,650 INFO  L340         BasicCegarLoop]: Counterexample is feasible
[2025-04-28 21:21:44,652 INFO  L790   garLoopResultBuilder]: Registering result UNSAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:44,654 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:44,658 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1]
[2025-04-28 21:21:44,691 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:44,695 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:44 BoogieIcfgContainer
[2025-04-28 21:21:44,695 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:44,696 INFO  L158              Benchmark]: Toolchain (without parser) took 940.74ms. Allocated memory is still 234.9MB. Free memory was 163.2MB in the beginning and 193.0MB in the end (delta: -29.8MB). Peak memory consumption was 40.2MB. Max. memory is 33.6GB.
[2025-04-28 21:21:44,697 INFO  L158              Benchmark]: SmtParser took 1.89ms. Allocated memory is still 234.9MB. Free memory is still 172.3MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:44,697 INFO  L158              Benchmark]: ChcToBoogie took 26.65ms. Allocated memory is still 234.9MB. Free memory was 163.2MB in the beginning and 161.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:44,697 INFO  L158              Benchmark]: Boogie Preprocessor took 62.52ms. Allocated memory is still 234.9MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:44,698 INFO  L158              Benchmark]: RCFGBuilder took 240.13ms. Allocated memory is still 234.9MB. Free memory was 160.1MB in the beginning and 150.1MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-04-28 21:21:44,698 INFO  L158              Benchmark]: TraceAbstraction took 605.91ms. Allocated memory is still 234.9MB. Free memory was 150.1MB in the beginning and 193.1MB in the end (delta: -43.1MB). Peak memory consumption was 23.4MB. Max. memory is 33.6GB.
[2025-04-28 21:21:44,700 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 1.89ms. Allocated memory is still 234.9MB. Free memory is still 172.3MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 26.65ms. Allocated memory is still 234.9MB. Free memory was 163.2MB in the beginning and 161.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 62.52ms. Allocated memory is still 234.9MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 240.13ms. Allocated memory is still 234.9MB. Free memory was 160.1MB in the beginning and 150.1MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 605.91ms. Allocated memory is still 234.9MB. Free memory was 150.1MB in the beginning and 193.1MB in the end (delta: -43.1MB). Peak memory consumption was 23.4MB. 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
  - CounterExampleResult [Unknown line] : the set of constraint Horn clauses is unsatisfiable
    the set of constraint Horn clauses is unsatisfiable
We found a FailurePath: 
[L0]  CALL  call False();
[L0]        assume !!hbv_False_v_0_1;
      VAL   [hbv_False_v_0_1=true]
[L0]  CALL  call %main(hbv_False_v_0_1);
      VAL   [hhv_%main_B_0=true]
[L0]        assume !(!hbv_%main_A_1 && 3 != hbv_%main_C_2) && !(3 == hbv_%main_C_2 && hbv_%main_A_1);
      VAL   [hbv_%main_A_1=true, hbv_%main_C_2=0, hhv_%main_B_0=true]
[L0]  CALL  call %id(hbv_%main_D_3, hbv_%main_C_2);
      VAL   [hhv_%id_A_0=0, hhv_%id_B_1=0]
[L0]        assume hbv_%id_v_2_1 == hhv_%id_A_0;
      VAL   [hbv_%id_v_2_1=0, hhv_%id_A_0=0, hhv_%id_B_1=0]
[L0]  CALL  call %id.0(hhv_%id_A_0, hbv_%id_v_2_1, hhv_%id_B_1);
      VAL   [hhv_%id.0_A_0=0, hhv_%id.0_B_2=0, hhv_%id.0_v_2_1=0]
[L0]        assume hhv_%id.0_v_2_1 == 0 && hhv_%id.0_B_2 == 0;
      VAL   [hhv_%id.0_A_0=0, hhv_%id.0_B_2=0, hhv_%id.0_v_2_1=0]
[L0]  RET   call %id.0(hhv_%id_A_0, hbv_%id_v_2_1, hhv_%id_B_1);
      VAL   [hbv_%id_v_2_1=0, hhv_%id_A_0=0, hhv_%id_B_1=0]
[L0]  RET   call %id(hbv_%main_D_3, hbv_%main_C_2);
      VAL   [hbv_%main_A_1=true, hbv_%main_C_2=0, hbv_%main_D_3=0, hhv_%main_B_0=true]
[L0]  CALL  call %main.2(hbv_%main_D_3, hbv_%main_C_2, hbv_%main_A_1, hhv_%main_B_0);
      VAL   [hhv_%main.2_C_3=true, hhv_%main.2_v_3_2=true]
[L0]        assume !!hhv_%main.2_v_3_2 && !!hhv_%main.2_C_3;
      VAL   [hhv_%main.2_C_3=true, hhv_%main.2_v_3_2=true]
[L0]  RET   call %main.2(hbv_%main_D_3, hbv_%main_C_2, hbv_%main_A_1, hhv_%main_B_0);
      VAL   [hbv_%main_A_1=true, hbv_%main_C_2=0, hbv_%main_D_3=0, hhv_%main_B_0=true]
[L0]  RET   call %main(hbv_False_v_0_1);
      VAL   [hbv_False_v_0_1=true]
[L0]  RET   call False();
[L0]        assert false;

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 10 procedures, 41 locations, 56 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 166 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 43 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2025-04-28 21:21:44,717 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...
unsat
