./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/types/static_array_length_1.sol_2_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:27:57,826 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:27:57,863 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6650e89b-f34b-46b3-85d7-a1268762f1f7/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:27:57,866 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:27:57,866 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:27:57,879 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:27:57,879 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:27:57,880 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:27:57,880 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:27:57,880 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:27:57,880 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:27:57,880 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:27:57,880 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:27:57,880 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:27:57,880 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:27:57,881 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:57,881 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:27:57,881 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:27:57,882 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:27:57,882 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:27:58,065 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:27:58,073 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:27:58,075 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:27:58,076 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:27:58,077 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:27:58,078 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6650e89b-f34b-46b3-85d7-a1268762f1f7/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/types/static_array_length_1.sol_2_no_adts_000.smt2
[2025-05-07 17:27:58,078 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:27:58,081 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:27:58,283 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6650e89b-f34b-46b3-85d7-a1268762f1f7/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/types/static_array_length_1.sol_2_no_adts_000.smt2
[2025-05-07 17:27:58,286 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:27:58,287 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:27:58,287 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:27:58,288 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:27:58,288 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:27:58,289 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,317 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58 Unit
[2025-05-07 17:27:58,317 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:27:58,317 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:27:58,317 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:27:58,317 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:27:58,328 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,328 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,348 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,348 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,352 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,352 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,354 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,355 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,356 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,366 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:27:58,366 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:27:58,366 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:27:58,366 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:27:58,367 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (1/1) ...
[2025-05-07 17:27:58,369 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:58,377 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:27:58,386 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 17:27:58,388 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 17:27:58,395 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:27:58,396 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:27:58,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:27:58,396 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_5_0 given in one single declaration
[2025-05-07 17:27:58,396 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_5_0
[2025-05-07 17:27:58,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_5_0
[2025-05-07 17:27:58,396 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,396 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,396 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,396 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__29_30_0
[2025-05-07 17:27:58,396 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_28_30_0 given in one single declaration
[2025-05-07 17:27:58,397 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_28_30_0
[2025-05-07 17:27:58,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_28_30_0
[2025-05-07 17:27:58,397 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,397 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,397 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,397 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,397 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_f__29_30_0
[2025-05-07 17:27:58,397 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_f__29_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__29_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__29_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__29_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_15_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_15_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_15_C_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_12_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_12_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_12_C_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_14_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_14_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_14_C_30_0
[2025-05-07 17:27:58,398 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_13_C_30_0 given in one single declaration
[2025-05-07 17:27:58,398 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_13_C_30_0
[2025-05-07 17:27:58,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_13_C_30_0
[2025-05-07 17:27:58,399 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:27:58,399 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:27:58,399 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:27:58,503 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:27:58,504 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:27:58,676 INFO  L?                        ?]: Removed 160 outVars from TransFormulas that were not future-live.
[2025-05-07 17:27:58,677 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:27:58,687 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:27:58,688 INFO  L312             CfgBuilder]: Removed 9 assume(true) statements.
[2025-05-07 17:27:58,688 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:58 BoogieIcfgContainer
[2025-05-07 17:27:58,688 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:27:58,690 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:27:58,690 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:27:58,692 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:27:58,693 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:58" (1/3) ...
[2025-05-07 17:27:58,693 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4743af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:27:58, skipping insertion in model container
[2025-05-07 17:27:58,693 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:58" (2/3) ...
[2025-05-07 17:27:58,693 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4743af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:27:58, skipping insertion in model container
[2025-05-07 17:27:58,693 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:58" (3/3) ...
[2025-05-07 17:27:58,694 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:27:58,715 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:27:58,717 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 18 procedures, 70 locations, 105 edges, 18 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:27:58,744 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:27:58,753 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;@793a7f20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:27:58,753 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:27:58,756 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 70 states, 30 states have (on average 1.1) internal successors, (33), 33 states have internal predecessors, (33), 21 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (24), 19 states have call predecessors, (24), 21 states have call successors, (24)
[2025-05-07 17:27:58,762 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:58,762 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:58,763 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:58,763 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:58,766 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:58,767 INFO  L85        PathProgramCache]: Analyzing trace with hash -67279506, now seen corresponding path program 1 times
[2025-05-07 17:27:58,772 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:58,772 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727281909]
[2025-05-07 17:27:58,772 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:58,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:58,820 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:58,842 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:58,843 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:58,843 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:59,007 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 17:27:59,007 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:59,008 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727281909]
[2025-05-07 17:27:59,008 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727281909] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:59,008 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:59,010 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:27:59,011 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995109186]
[2025-05-07 17:27:59,011 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:59,014 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:27:59,014 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:59,031 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:27:59,032 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:27:59,033 INFO  L87              Difference]: Start difference. First operand  has 70 states, 30 states have (on average 1.1) internal successors, (33), 33 states have internal predecessors, (33), 21 states have call successors, (24), 17 states have call predecessors, (24), 17 states have return successors, (24), 19 states have call predecessors, (24), 21 states have call successors, (24) Second operand  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:59,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:59,079 INFO  L93              Difference]: Finished difference Result 69 states and 78 transitions.
[2025-05-07 17:27:59,080 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:27:59,081 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:27:59,081 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:59,091 INFO  L225             Difference]: With dead ends: 69
[2025-05-07 17:27:59,091 INFO  L226             Difference]: Without dead ends: 64
[2025-05-07 17:27:59,093 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 17:27:59,096 INFO  L437           NwaCegarLoop]: 74 mSDtfsCounter, 1 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:59,096 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 215 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:59,107 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2025-05-07 17:27:59,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62.
[2025-05-07 17:27:59,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 18 states have call successors, (20), 16 states have call predecessors, (20), 16 states have return successors, (20), 17 states have call predecessors, (20), 18 states have call successors, (20)
[2025-05-07 17:27:59,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions.
[2025-05-07 17:27:59,126 INFO  L79                 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51
[2025-05-07 17:27:59,126 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:59,126 INFO  L485      AbstractCegarLoop]: Abstraction has 62 states and 68 transitions.
[2025-05-07 17:27:59,126 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:59,126 INFO  L278                IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions.
[2025-05-07 17:27:59,127 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:59,127 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:59,128 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:59,128 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:27:59,128 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:59,128 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:59,128 INFO  L85        PathProgramCache]: Analyzing trace with hash 1454870622, now seen corresponding path program 1 times
[2025-05-07 17:27:59,128 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:59,129 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942199762]
[2025-05-07 17:27:59,129 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:59,129 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:59,155 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:59,184 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:59,184 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:59,184 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:59,380 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 17:27:59,380 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:59,380 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942199762]
[2025-05-07 17:27:59,380 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942199762] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:59,380 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:59,380 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:27:59,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156735389]
[2025-05-07 17:27:59,381 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:59,382 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:27:59,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:59,382 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:27:59,382 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:27:59,383 INFO  L87              Difference]: Start difference. First operand 62 states and 68 transitions. Second operand  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:59,458 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:59,458 INFO  L93              Difference]: Finished difference Result 66 states and 72 transitions.
[2025-05-07 17:27:59,459 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:27:59,459 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:27:59,459 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:59,460 INFO  L225             Difference]: With dead ends: 66
[2025-05-07 17:27:59,460 INFO  L226             Difference]: Without dead ends: 66
[2025-05-07 17:27:59,461 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:27:59,461 INFO  L437           NwaCegarLoop]: 66 mSDtfsCounter, 1 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:59,462 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 378 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:27:59,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2025-05-07 17:27:59,468 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2025-05-07 17:27:59,469 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 18 states have call successors, (20), 16 states have call predecessors, (20), 18 states have return successors, (22), 19 states have call predecessors, (22), 18 states have call successors, (22)
[2025-05-07 17:27:59,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2025-05-07 17:27:59,470 INFO  L79                 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 51
[2025-05-07 17:27:59,471 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:59,471 INFO  L485      AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2025-05-07 17:27:59,471 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:59,471 INFO  L278                IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2025-05-07 17:27:59,473 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:59,473 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:59,473 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:59,473 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:27:59,473 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:59,474 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:59,474 INFO  L85        PathProgramCache]: Analyzing trace with hash -1943736194, now seen corresponding path program 1 times
[2025-05-07 17:27:59,474 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:59,474 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951228355]
[2025-05-07 17:27:59,474 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:59,474 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:59,499 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:59,517 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:59,517 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:59,517 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:59,620 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 17:27:59,620 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:59,620 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951228355]
[2025-05-07 17:27:59,620 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951228355] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:59,620 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:59,620 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:27:59,620 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352012423]
[2025-05-07 17:27:59,620 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:59,621 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:27:59,621 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:59,621 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:27:59,621 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:59,622 INFO  L87              Difference]: Start difference. First operand 66 states and 72 transitions. Second operand  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:59,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:59,653 INFO  L93              Difference]: Finished difference Result 70 states and 76 transitions.
[2025-05-07 17:27:59,654 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:27:59,654 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 51
[2025-05-07 17:27:59,654 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:59,654 INFO  L225             Difference]: With dead ends: 70
[2025-05-07 17:27:59,654 INFO  L226             Difference]: Without dead ends: 70
[2025-05-07 17:27:59,655 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:59,655 INFO  L437           NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:59,655 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 332 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:59,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2025-05-07 17:27:59,658 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66.
[2025-05-07 17:27:59,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 30 states have internal predecessors, (30), 18 states have call successors, (20), 16 states have call predecessors, (20), 18 states have return successors, (22), 19 states have call predecessors, (22), 18 states have call successors, (22)
[2025-05-07 17:27:59,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2025-05-07 17:27:59,659 INFO  L79                 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 51
[2025-05-07 17:27:59,659 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:59,660 INFO  L485      AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2025-05-07 17:27:59,660 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:59,660 INFO  L278                IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2025-05-07 17:27:59,660 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:59,660 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:59,660 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:59,661 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:27:59,661 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:59,661 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:59,661 INFO  L85        PathProgramCache]: Analyzing trace with hash 1438074226, now seen corresponding path program 1 times
[2025-05-07 17:27:59,661 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:59,661 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131572764]
[2025-05-07 17:27:59,661 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:59,661 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:59,677 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:59,686 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:59,686 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:59,686 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:59,781 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 17:27:59,781 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:59,781 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131572764]
[2025-05-07 17:27:59,781 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131572764] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:59,781 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:59,781 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:27:59,781 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573087455]
[2025-05-07 17:27:59,781 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:59,782 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:27:59,782 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:59,782 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:27:59,782 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:59,782 INFO  L87              Difference]: Start difference. First operand 66 states and 72 transitions. Second operand  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:59,813 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:59,813 INFO  L93              Difference]: Finished difference Result 60 states and 66 transitions.
[2025-05-07 17:27:59,813 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:27:59,814 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 51
[2025-05-07 17:27:59,814 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:59,814 INFO  L225             Difference]: With dead ends: 60
[2025-05-07 17:27:59,814 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:27:59,814 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:59,815 INFO  L437           NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:59,815 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:59,816 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:27:59,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:27:59,816 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 17:27:59,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:27:59,816 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2025-05-07 17:27:59,816 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:59,816 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:27:59,816 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:59,816 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:27:59,817 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:27:59,819 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:27:59,819 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:27:59,821 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:27:59,823 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:27:59,826 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:27:59 BoogieIcfgContainer
[2025-05-07 17:27:59,826 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:27:59,826 INFO  L158              Benchmark]: Toolchain (without parser) took 1539.52ms. Allocated memory is still 234.9MB. Free memory was 153.0MB in the beginning and 176.8MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:59,827 INFO  L158              Benchmark]: SmtParser took 0.21ms. 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 17:27:59,827 INFO  L158              Benchmark]: ChcToBoogie took 29.56ms. Allocated memory is still 234.9MB. Free memory was 153.0MB in the beginning and 150.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:59,827 INFO  L158              Benchmark]: Boogie Preprocessor took 48.53ms. Allocated memory is still 234.9MB. Free memory was 150.7MB in the beginning and 147.7MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:59,827 INFO  L158              Benchmark]: RCFGBuilder took 321.68ms. Allocated memory is still 234.9MB. Free memory was 147.6MB in the beginning and 121.7MB in the end (delta: 25.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:27:59,828 INFO  L158              Benchmark]: TraceAbstraction took 1136.13ms. Allocated memory is still 234.9MB. Free memory was 121.1MB in the beginning and 176.8MB in the end (delta: -55.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:59,829 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.21ms. Allocated memory is still 234.9MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 29.56ms. Allocated memory is still 234.9MB. Free memory was 153.0MB in the beginning and 150.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 48.53ms. Allocated memory is still 234.9MB. Free memory was 150.7MB in the beginning and 147.7MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 321.68ms. Allocated memory is still 234.9MB. Free memory was 147.6MB in the beginning and 121.7MB in the end (delta: 25.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1136.13ms. Allocated memory is still 234.9MB. Free memory was 121.1MB in the beginning and 176.8MB in the end (delta: -55.7MB). 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 18 procedures, 70 locations, 105 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 1212 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 944 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 268 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 17:27:59,839 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
