./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/hcai-bench/svcomp/O0/O0_lu.cmp_true-unreach-call_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:26:47,404 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:26:47,460 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f688d180-2c03-4aaf-8409-5ecb54e73aae/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:26:47,464 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:26:47,464 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:26:47,481 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:26:47,482 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:26:47,482 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:26:47,482 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:26:47,482 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:26:47,482 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:26:47,483 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:26:47,483 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:47,483 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:26:47,483 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:26:47,484 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:26:47,484 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:26:47,484 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:26:47,484 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:26:47,484 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:26:47,484 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:26:47,681 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:26:47,687 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:26:47,689 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:26:47,690 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:26:47,690 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:26:47,691 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f688d180-2c03-4aaf-8409-5ecb54e73aae/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/hcai-bench/svcomp/O0/O0_lu.cmp_true-unreach-call_000.smt2
[2025-05-07 17:26:47,692 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:26:47,694 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:26:47,840 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f688d180-2c03-4aaf-8409-5ecb54e73aae/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/hcai-bench/svcomp/O0/O0_lu.cmp_true-unreach-call_000.smt2
[2025-05-07 17:26:47,843 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:26:47,844 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:26:47,844 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:26:47,844 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:26:47,845 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:26:47,846 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,867 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47 Unit
[2025-05-07 17:26:47,867 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:26:47,868 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:26:47,868 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:26:47,868 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:26:47,879 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,879 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,894 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,894 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,897 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,897 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,898 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,899 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,900 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,908 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:26:47,909 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:26:47,909 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:26:47,909 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:26:47,910 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (1/1) ...
[2025-05-07 17:26:47,911 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:47,919 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:26:47,927 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)
[2025-05-07 17:26:47,930 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-05-07 17:26:47,937 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:26:47,937 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:26:47,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:26:47,937 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main.ATverifier.error.split given in one single declaration
[2025-05-07 17:26:47,937 INFO  L130     BoogieDeclarations]: Found specification of procedure main.ATverifier.error.split
[2025-05-07 17:26:47,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure main.ATverifier.error.split
[2025-05-07 17:26:47,937 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main.AT_bb2 given in one single declaration
[2025-05-07 17:26:47,937 INFO  L130     BoogieDeclarations]: Found specification of procedure main.AT_bb2
[2025-05-07 17:26:47,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure main.AT_bb2
[2025-05-07 17:26:47,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main.AT_bb given in one single declaration
[2025-05-07 17:26:47,938 INFO  L130     BoogieDeclarations]: Found specification of procedure main.AT_bb
[2025-05-07 17:26:47,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure main.AT_bb
[2025-05-07 17:26:47,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main.ATentry given in one single declaration
[2025-05-07 17:26:47,938 INFO  L130     BoogieDeclarations]: Found specification of procedure main.ATentry
[2025-05-07 17:26:47,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure main.ATentry
[2025-05-07 17:26:47,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure __VERIFIER_assert given in one single declaration
[2025-05-07 17:26:47,938 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2025-05-07 17:26:47,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2025-05-07 17:26:47,939 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure __VERIFIER_assert.AT_call3 given in one single declaration
[2025-05-07 17:26:47,939 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert.AT_call3
[2025-05-07 17:26:47,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert.AT_call3
[2025-05-07 17:26:47,939 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure __VERIFIER_assert.AT_1 given in one single declaration
[2025-05-07 17:26:47,939 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert.AT_1
[2025-05-07 17:26:47,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert.AT_1
[2025-05-07 17:26:47,939 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:26:47,939 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:26:47,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:26:47,990 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:26:47,991 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:26:48,103 INFO  L?                        ?]: Removed 63 outVars from TransFormulas that were not future-live.
[2025-05-07 17:26:48,104 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:26:48,114 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:26:48,114 INFO  L312             CfgBuilder]: Removed 3 assume(true) statements.
[2025-05-07 17:26:48,114 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:48 BoogieIcfgContainer
[2025-05-07 17:26:48,114 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:26:48,116 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:26:48,116 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:26:48,119 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:26:48,119 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:47" (1/3) ...
[2025-05-07 17:26:48,119 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310a8468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:26:48, skipping insertion in model container
[2025-05-07 17:26:48,119 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:47" (2/3) ...
[2025-05-07 17:26:48,120 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310a8468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:26:48, skipping insertion in model container
[2025-05-07 17:26:48,120 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:48" (3/3) ...
[2025-05-07 17:26:48,121 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:26:48,131 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:26:48,133 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 9 procedures, 35 locations, 51 edges, 9 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:26:48,163 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:26:48,172 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;@59e3b7f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:26:48,172 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:26:48,175 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 35 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10)
[2025-05-07 17:26:48,182 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2025-05-07 17:26:48,182 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:48,182 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:26:48,183 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:48,187 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:48,188 INFO  L85        PathProgramCache]: Analyzing trace with hash 1987302591, now seen corresponding path program 1 times
[2025-05-07 17:26:48,195 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:48,195 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64205880]
[2025-05-07 17:26:48,195 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:48,196 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:48,222 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes.
[2025-05-07 17:26:48,245 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements.
[2025-05-07 17:26:48,246 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:48,246 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:48,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:26:48,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:48,481 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64205880]
[2025-05-07 17:26:48,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64205880] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:48,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:48,484 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:26:48,486 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845478739]
[2025-05-07 17:26:48,486 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:48,489 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:26:48,489 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:48,506 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:26:48,507 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:26:48,508 INFO  L87              Difference]: Start difference. First operand  has 35 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2025-05-07 17:26:48,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:48,560 INFO  L93              Difference]: Finished difference Result 27 states and 33 transitions.
[2025-05-07 17:26:48,561 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:26:48,563 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19
[2025-05-07 17:26:48,563 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:48,567 INFO  L225             Difference]: With dead ends: 27
[2025-05-07 17:26:48,567 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:26:48,569 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
[2025-05-07 17:26:48,572 INFO  L437           NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:48,573 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:48,588 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:26:48,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:26:48,597 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)
[2025-05-07 17:26:48,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:26:48,600 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19
[2025-05-07 17:26:48,600 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:48,601 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:26:48,601 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5)
[2025-05-07 17:26:48,601 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:26:48,601 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:26:48,604 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:26:48,604 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:26:48,613 INFO  L422         BasicCegarLoop]: Path program histogram: [1]
[2025-05-07 17:26:48,616 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:26:48,620 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:26:48 BoogieIcfgContainer
[2025-05-07 17:26:48,620 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:26:48,621 INFO  L158              Benchmark]: Toolchain (without parser) took 776.75ms. Allocated memory is still 234.9MB. Free memory was 161.2MB in the beginning and 195.0MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:48,621 INFO  L158              Benchmark]: SmtParser took 0.20ms. Allocated memory is still 234.9MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:48,621 INFO  L158              Benchmark]: ChcToBoogie took 23.50ms. Allocated memory is still 234.9MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:48,621 INFO  L158              Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 234.9MB. Free memory was 159.5MB in the beginning and 157.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:48,622 INFO  L158              Benchmark]: RCFGBuilder took 205.74ms. Allocated memory is still 234.9MB. Free memory was 157.0MB in the beginning and 142.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:26:48,622 INFO  L158              Benchmark]: TraceAbstraction took 503.62ms. Allocated memory is still 234.9MB. Free memory was 142.3MB in the beginning and 195.0MB in the end (delta: -52.6MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:48,623 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.20ms. Allocated memory is still 234.9MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 23.50ms. Allocated memory is still 234.9MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 40.25ms. Allocated memory is still 234.9MB. Free memory was 159.5MB in the beginning and 157.1MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 205.74ms. Allocated memory is still 234.9MB. Free memory was 157.0MB in the beginning and 142.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 503.62ms. Allocated memory is still 234.9MB. Free memory was 142.3MB in the beginning and 195.0MB in the end (delta: -52.6MB). 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 9 procedures, 35 locations, 51 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 31 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 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
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-05-07 17:26:48,635 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
