./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/special/blockhash.sol_0_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:27:37,380 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:27:37,418 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ef745f-4a91-41b6-86b1-eebaca5107cd/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:27:37,420 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:27:37,421 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:27:37,433 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:27:37,433 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:27:37,433 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:27:37,434 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:27:37,434 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:27:37,434 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:27:37,434 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:27:37,434 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:37,435 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:27:37,435 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:27:37,435 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:27:37,615 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:27:37,623 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:27:37,625 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:27:37,626 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:27:37,626 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:27:37,627 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ef745f-4a91-41b6-86b1-eebaca5107cd/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/special/blockhash.sol_0_no_adts_000.smt2
[2025-05-07 17:27:37,628 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:27:37,631 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:27:37,825 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ef745f-4a91-41b6-86b1-eebaca5107cd/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/special/blockhash.sol_0_no_adts_000.smt2
[2025-05-07 17:27:37,827 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:27:37,828 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:27:37,829 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:27:37,829 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:27:37,829 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:27:37,831 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,858 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37 Unit
[2025-05-07 17:27:37,858 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:27:37,858 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:27:37,859 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:27:37,859 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:27:37,870 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,870 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,889 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,890 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,893 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,894 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,895 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,897 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,898 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,907 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:27:37,908 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:27:37,908 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:27:37,908 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:27:37,909 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (1/1) ...
[2025-05-07 17:27:37,911 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:37,920 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:27:37,929 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 17:27:37,931 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 17:27:37,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:27:37,942 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:27:37,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:27:37,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_7_0 given in one single declaration
[2025-05-07 17:27:37,942 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_7_0
[2025-05-07 17:27:37,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_7_0
[2025-05-07 17:27:37,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_37_0 given in one single declaration
[2025-05-07 17:27:37,942 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_37_0
[2025-05-07 17:27:37,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_37_0
[2025-05-07 17:27:37,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_37_0 given in one single declaration
[2025-05-07 17:27:37,942 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_37_0
[2025-05-07 17:27:37,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_37_0
[2025-05-07 17:27:37,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_12_C_37_0 given in one single declaration
[2025-05-07 17:27:37,942 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_12_C_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_12_C_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_14_C_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_14_C_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_14_C_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_13_C_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_13_C_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_13_C_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_15_C_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_15_C_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_15_C_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__36_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__36_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__36_37_0
[2025-05-07 17:27:37,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__36_37_0
[2025-05-07 17:27:37,943 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,943 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_35_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_35_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_35_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__36_37_0 given in one single declaration
[2025-05-07 17:27:37,944 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__36_37_0
[2025-05-07 17:27:37,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__36_37_0
[2025-05-07 17:27:37,945 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:27:37,945 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:27:37,945 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:27:38,048 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:27:38,050 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:27:38,229 INFO  L?                        ?]: Removed 140 outVars from TransFormulas that were not future-live.
[2025-05-07 17:27:38,229 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:27:38,241 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:27:38,241 INFO  L312             CfgBuilder]: Removed 9 assume(true) statements.
[2025-05-07 17:27:38,241 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:38 BoogieIcfgContainer
[2025-05-07 17:27:38,241 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:27:38,243 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:27:38,243 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:27:38,257 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:27:38,257 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:37" (1/3) ...
[2025-05-07 17:27:38,258 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e8e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:27:38, skipping insertion in model container
[2025-05-07 17:27:38,258 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:37" (2/3) ...
[2025-05-07 17:27:38,258 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e8e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:27:38, skipping insertion in model container
[2025-05-07 17:27:38,258 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:38" (3/3) ...
[2025-05-07 17:27:38,260 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:27:38,273 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:27:38,276 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 17:27:38,309 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:27:38,317 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;@62ea7ccf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:27:38,317 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:27:38,320 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 17:27:38,326 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:38,326 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:38,326 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 17:27:38,327 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:38,330 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:38,330 INFO  L85        PathProgramCache]: Analyzing trace with hash -1711808399, now seen corresponding path program 1 times
[2025-05-07 17:27:38,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:38,335 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953104050]
[2025-05-07 17:27:38,335 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:38,336 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:38,377 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:38,426 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:38,426 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:38,426 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:38,598 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 17:27:38,599 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:38,599 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953104050]
[2025-05-07 17:27:38,600 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953104050] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:38,600 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:38,602 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:27:38,604 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504798557]
[2025-05-07 17:27:38,605 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:38,608 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:27:38,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:38,632 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:27:38,633 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:27:38,634 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), 3 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:38,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:38,670 INFO  L93              Difference]: Finished difference Result 69 states and 78 transitions.
[2025-05-07 17:27:38,671 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:27:38,672 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), 3 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 51
[2025-05-07 17:27:38,672 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:38,678 INFO  L225             Difference]: With dead ends: 69
[2025-05-07 17:27:38,678 INFO  L226             Difference]: Without dead ends: 64
[2025-05-07 17:27:38,679 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 17:27:38,682 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 17:27:38,682 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 17:27:38,692 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2025-05-07 17:27:38,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62.
[2025-05-07 17:27:38,708 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 17:27:38,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions.
[2025-05-07 17:27:38,712 INFO  L79                 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51
[2025-05-07 17:27:38,712 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:38,712 INFO  L485      AbstractCegarLoop]: Abstraction has 62 states and 68 transitions.
[2025-05-07 17:27:38,712 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), 3 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2025-05-07 17:27:38,713 INFO  L278                IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions.
[2025-05-07 17:27:38,714 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:38,714 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:38,714 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 17:27:38,714 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:27:38,714 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:38,715 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:38,715 INFO  L85        PathProgramCache]: Analyzing trace with hash 2101250519, now seen corresponding path program 1 times
[2025-05-07 17:27:38,715 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:38,715 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109773178]
[2025-05-07 17:27:38,715 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:38,715 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:38,740 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:38,757 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:38,757 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:38,757 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:38,859 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 17:27:38,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:38,859 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109773178]
[2025-05-07 17:27:38,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109773178] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:38,859 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:38,859 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:27:38,859 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104036187]
[2025-05-07 17:27:38,859 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:38,860 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:27:38,860 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:38,861 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:27:38,861 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:38,861 INFO  L87              Difference]: Start difference. First operand 62 states and 68 transitions. Second operand  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:38,898 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:38,899 INFO  L93              Difference]: Finished difference Result 66 states and 72 transitions.
[2025-05-07 17:27:38,899 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:27:38,899 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), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:27:38,899 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:38,900 INFO  L225             Difference]: With dead ends: 66
[2025-05-07 17:27:38,900 INFO  L226             Difference]: Without dead ends: 66
[2025-05-07 17:27:38,901 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 17:27:38,901 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, 3 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 17:27:38,902 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 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 17:27:38,902 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2025-05-07 17:27:38,907 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2025-05-07 17:27:38,908 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 17:27:38,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2025-05-07 17:27:38,909 INFO  L79                 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 51
[2025-05-07 17:27:38,909 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:38,909 INFO  L485      AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2025-05-07 17:27:38,909 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), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:38,910 INFO  L278                IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2025-05-07 17:27:38,911 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:38,911 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:38,911 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 17:27:38,911 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:27:38,911 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:38,912 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:38,912 INFO  L85        PathProgramCache]: Analyzing trace with hash 1942393335, now seen corresponding path program 1 times
[2025-05-07 17:27:38,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:38,912 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118183871]
[2025-05-07 17:27:38,912 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:38,912 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:38,936 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:38,952 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:38,952 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:38,952 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:39,135 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 17:27:39,135 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:39,135 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118183871]
[2025-05-07 17:27:39,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118183871] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:39,135 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:39,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:27:39,136 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920748954]
[2025-05-07 17:27:39,136 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:39,136 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:27:39,136 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:39,137 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:27:39,137 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:27:39,137 INFO  L87              Difference]: Start difference. First operand 66 states and 72 transitions. 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 17:27:39,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:39,206 INFO  L93              Difference]: Finished difference Result 70 states and 76 transitions.
[2025-05-07 17:27:39,206 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:27:39,206 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 17:27:39,206 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:39,207 INFO  L225             Difference]: With dead ends: 70
[2025-05-07 17:27:39,207 INFO  L226             Difference]: Without dead ends: 70
[2025-05-07 17:27:39,208 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 17:27:39,208 INFO  L437           NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 372 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 17:27:39,209 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 372 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:27:39,209 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2025-05-07 17:27:39,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66.
[2025-05-07 17:27:39,213 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 17:27:39,214 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2025-05-07 17:27:39,215 INFO  L79                 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 51
[2025-05-07 17:27:39,215 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:39,215 INFO  L485      AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2025-05-07 17:27:39,215 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 17:27:39,215 INFO  L278                IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2025-05-07 17:27:39,216 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:27:39,216 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:39,216 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:39,216 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:27:39,217 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:39,217 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:39,217 INFO  L85        PathProgramCache]: Analyzing trace with hash -623600907, now seen corresponding path program 1 times
[2025-05-07 17:27:39,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:39,217 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038340565]
[2025-05-07 17:27:39,217 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:39,217 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:39,237 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:27:39,248 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:27:39,249 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:39,249 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:39,323 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 17:27:39,323 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:39,323 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038340565]
[2025-05-07 17:27:39,323 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038340565] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:39,323 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:39,323 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:27:39,323 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118896305]
[2025-05-07 17:27:39,323 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:39,323 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:27:39,323 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:39,324 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:27:39,324 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:27:39,324 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), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:39,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:39,348 INFO  L93              Difference]: Finished difference Result 36 states and 38 transitions.
[2025-05-07 17:27:39,348 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:27:39,348 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), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:27:39,349 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:39,349 INFO  L225             Difference]: With dead ends: 36
[2025-05-07 17:27:39,349 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:27:39,349 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 17:27:39,350 INFO  L437           NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:39,350 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:39,351 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:27:39,351 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:27:39,351 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 17:27:39,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:27:39,351 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2025-05-07 17:27:39,351 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:39,351 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:27:39,351 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), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:27:39,351 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:27:39,352 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:27:39,354 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:27:39,354 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:27:39,358 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:27:39,360 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:27:39,363 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:27:39 BoogieIcfgContainer
[2025-05-07 17:27:39,363 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:27:39,364 INFO  L158              Benchmark]: Toolchain (without parser) took 1535.34ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 175.8MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:39,364 INFO  L158              Benchmark]: SmtParser took 0.18ms. Allocated memory is still 234.9MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:39,364 INFO  L158              Benchmark]: ChcToBoogie took 28.96ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 150.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:39,364 INFO  L158              Benchmark]: Boogie Preprocessor took 48.88ms. Allocated memory is still 234.9MB. Free memory was 150.8MB in the beginning and 147.8MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:39,365 INFO  L158              Benchmark]: RCFGBuilder took 333.64ms. Allocated memory is still 234.9MB. Free memory was 147.7MB in the beginning and 120.7MB in the end (delta: 27.0MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:27:39,365 INFO  L158              Benchmark]: TraceAbstraction took 1120.01ms. Allocated memory is still 234.9MB. Free memory was 120.1MB in the beginning and 175.8MB in the end (delta: -55.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:39,366 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.18ms. Allocated memory is still 234.9MB. Free memory is still 173.1MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 28.96ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 150.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 48.88ms. Allocated memory is still 234.9MB. Free memory was 150.8MB in the beginning and 147.8MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 333.64ms. Allocated memory is still 234.9MB. Free memory was 147.7MB in the beginning and 120.7MB in the end (delta: 27.0MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1120.01ms. Allocated memory is still 234.9MB. Free memory was 120.1MB in the beginning and 175.8MB 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, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 1090 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 846 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 244 mSDtfsCounter, 71 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, 0.5s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 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 17:27:39,377 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
