./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/overflow/underflow_sub.sol_1_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:27:51,746 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:27:51,781 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01f6480-f17e-49e4-859e-5d68a5a029b2/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:27:51,784 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:27:51,784 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:27:51,797 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:27:51,797 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:27:51,797 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:27:51,798 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:27:51,798 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:27:51,798 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:27:51,798 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:27:51,798 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:51,799 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:27:51,799 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:27:51,799 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:27:51,981 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:27:51,989 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:27:51,991 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:27:51,993 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:27:51,993 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:27:51,994 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01f6480-f17e-49e4-859e-5d68a5a029b2/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/overflow/underflow_sub.sol_1_no_adts_000.smt2
[2025-05-07 17:27:51,995 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:27:51,998 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:27:52,193 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01f6480-f17e-49e4-859e-5d68a5a029b2/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/overflow/underflow_sub.sol_1_no_adts_000.smt2
[2025-05-07 17:27:52,195 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:27:52,196 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:27:52,196 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:27:52,196 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:27:52,197 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:27:52,198 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,230 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52 Unit
[2025-05-07 17:27:52,231 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:27:52,231 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:27:52,231 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:27:52,232 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:27:52,243 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,244 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,270 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,270 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,276 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,277 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,279 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,281 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,283 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,299 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:27:52,299 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:27:52,300 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:27:52,300 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:27:52,301 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (1/1) ...
[2025-05-07 17:27:52,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:52,314 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:27:52,323 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 17:27:52,325 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 17:27:52,334 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:27:52,334 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:27:52,334 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:27:52,335 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_5_0 given in one single declaration
[2025-05-07 17:27:52,335 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_5_0
[2025-05-07 17:27:52,335 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_5_0
[2025-05-07 17:27:52,335 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_44_0 given in one single declaration
[2025-05-07 17:27:52,335 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_44_0
[2025-05-07 17:27:52,335 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_44_0
[2025-05-07 17:27:52,335 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_44_0 given in one single declaration
[2025-05-07 17:27:52,335 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_44_0
[2025-05-07 17:27:52,335 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_44_0
[2025-05-07 17:27:52,335 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_15_C_44_0 given in one single declaration
[2025-05-07 17:27:52,336 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_15_C_44_0
[2025-05-07 17:27:52,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_15_C_44_0
[2025-05-07 17:27:52,336 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_12_C_44_0 given in one single declaration
[2025-05-07 17:27:52,336 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_12_C_44_0
[2025-05-07 17:27:52,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_12_C_44_0
[2025-05-07 17:27:52,336 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_14_C_44_0 given in one single declaration
[2025-05-07 17:27:52,336 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_14_C_44_0
[2025-05-07 17:27:52,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_14_C_44_0
[2025-05-07 17:27:52,336 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_13_C_44_0 given in one single declaration
[2025-05-07 17:27:52,336 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_13_C_44_0
[2025-05-07 17:27:52,336 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_13_C_44_0
[2025-05-07 17:27:52,336 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_42_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_42_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_42_44_0
[2025-05-07 17:27:52,337 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,337 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_function_f__43_44_0
[2025-05-07 17:27:52,337 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_function_f__43_44_0
[2025-05-07 17:27:52,338 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,338 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__43_44_0
[2025-05-07 17:27:52,338 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__43_44_0
[2025-05-07 17:27:52,338 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__43_44_0 given in one single declaration
[2025-05-07 17:27:52,338 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__43_44_0
[2025-05-07 17:27:52,338 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__43_44_0
[2025-05-07 17:27:52,338 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:27:52,338 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:27:52,338 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:27:52,450 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:27:52,452 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:27:52,622 INFO  L?                        ?]: Removed 143 outVars from TransFormulas that were not future-live.
[2025-05-07 17:27:52,622 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:27:52,643 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:27:52,643 INFO  L312             CfgBuilder]: Removed 8 assume(true) statements.
[2025-05-07 17:27:52,643 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:52 BoogieIcfgContainer
[2025-05-07 17:27:52,643 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:27:52,646 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:27:52,646 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:27:52,649 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:27:52,649 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:52" (1/3) ...
[2025-05-07 17:27:52,650 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644822d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:27:52, skipping insertion in model container
[2025-05-07 17:27:52,650 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:52" (2/3) ...
[2025-05-07 17:27:52,650 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644822d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:27:52, skipping insertion in model container
[2025-05-07 17:27:52,650 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:52" (3/3) ...
[2025-05-07 17:27:52,651 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:27:52,665 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:27:52,667 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 17 procedures, 66 locations, 97 edges, 17 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:27:52,700 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:27:52,709 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;@94e2569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:27:52,710 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:27:52,713 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 66 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 20 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (22), 18 states have call predecessors, (22), 20 states have call successors, (22)
[2025-05-07 17:27:52,721 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:52,721 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:52,722 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 17:27:52,722 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:52,727 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:52,727 INFO  L85        PathProgramCache]: Analyzing trace with hash -2141797223, now seen corresponding path program 1 times
[2025-05-07 17:27:52,734 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:52,734 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995003133]
[2025-05-07 17:27:52,735 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:52,735 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:52,790 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:52,879 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:52,879 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:52,879 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:53,199 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 17:27:53,199 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:53,200 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995003133]
[2025-05-07 17:27:53,200 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995003133] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:53,200 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:53,202 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:27:53,203 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713989889]
[2025-05-07 17:27:53,203 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:53,206 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:27:53,206 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:53,231 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:27:53,232 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:27:53,234 INFO  L87              Difference]: Start difference. First operand  has 66 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 20 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (22), 18 states have call predecessors, (22), 20 states have call successors, (22) Second operand  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:27:53,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:53,318 INFO  L93              Difference]: Finished difference Result 51 states and 55 transitions.
[2025-05-07 17:27:53,319 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:27:53,320 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), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 51
[2025-05-07 17:27:53,320 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:53,323 INFO  L225             Difference]: With dead ends: 51
[2025-05-07 17:27:53,323 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:27:53,324 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 17:27:53,326 INFO  L437           NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:53,327 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:53,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:27:53,342 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:27:53,343 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 17:27:53,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:27:53,346 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2025-05-07 17:27:53,346 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:53,346 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:27:53,346 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), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:27:53,346 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:27:53,346 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:27:53,348 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:27:53,348 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:27:53,350 INFO  L422         BasicCegarLoop]: Path program histogram: [1]
[2025-05-07 17:27:53,352 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:27:53,355 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:27:53 BoogieIcfgContainer
[2025-05-07 17:27:53,355 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:27:53,355 INFO  L158              Benchmark]: Toolchain (without parser) took 1159.53ms. Allocated memory is still 234.9MB. Free memory was 151.2MB in the beginning and 186.1MB in the end (delta: -34.9MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:53,355 INFO  L158              Benchmark]: SmtParser took 0.22ms. Allocated memory is still 234.9MB. Free memory is still 171.4MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:53,356 INFO  L158              Benchmark]: ChcToBoogie took 34.50ms. Allocated memory is still 234.9MB. Free memory was 151.2MB in the beginning and 148.7MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:53,356 INFO  L158              Benchmark]: Boogie Preprocessor took 67.36ms. Allocated memory is still 234.9MB. Free memory was 148.7MB in the beginning and 145.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:53,356 INFO  L158              Benchmark]: RCFGBuilder took 344.09ms. Allocated memory is still 234.9MB. Free memory was 145.8MB in the beginning and 193.5MB in the end (delta: -47.7MB). Peak memory consumption was 41.4MB. Max. memory is 33.6GB.
[2025-05-07 17:27:53,356 INFO  L158              Benchmark]: TraceAbstraction took 709.33ms. Allocated memory is still 234.9MB. Free memory was 193.1MB in the beginning and 186.1MB in the end (delta: 7.0MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:53,357 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.22ms. Allocated memory is still 234.9MB. Free memory is still 171.4MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 34.50ms. Allocated memory is still 234.9MB. Free memory was 151.2MB in the beginning and 148.7MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 67.36ms. Allocated memory is still 234.9MB. Free memory was 148.7MB in the beginning and 145.8MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 344.09ms. Allocated memory is still 234.9MB. Free memory was 145.8MB in the beginning and 193.5MB in the end (delta: -47.7MB). Peak memory consumption was 41.4MB. Max. memory is 33.6GB.
 * TraceAbstraction took 709.33ms. Allocated memory is still 234.9MB. Free memory was 193.1MB in the beginning and 186.1MB in the end (delta: 7.0MB). 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 17 procedures, 66 locations, 97 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 293 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 51 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 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 17:27:53,369 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
