./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/branches_merge_variables_2.sol_0_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:25:38,212 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:25:38,249 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38858d51-934b-423d-b021-a952d7173833/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:25:38,252 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:25:38,252 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:25:38,264 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:25:38,265 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:25:38,265 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:25:38,265 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:25:38,265 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:25:38,265 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:25:38,265 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:25:38,265 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:25:38,266 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:25:38,266 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:25:38,266 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:25:38,266 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:25:38,267 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:25:38,267 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:25:38,267 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:25:38,267 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:25:38,447 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:25:38,455 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:25:38,457 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:25:38,458 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:25:38,458 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:25:38,459 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38858d51-934b-423d-b021-a952d7173833/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/branches_merge_variables_2.sol_0_no_adts_000.smt2
[2025-05-07 17:25:38,460 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:25:38,462 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:25:38,657 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38858d51-934b-423d-b021-a952d7173833/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/branches_merge_variables_2.sol_0_no_adts_000.smt2
[2025-05-07 17:25:38,660 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:25:38,661 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:25:38,661 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:25:38,661 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:25:38,661 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:25:38,663 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,691 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38 Unit
[2025-05-07 17:25:38,691 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:25:38,692 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:25:38,692 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:25:38,692 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:25:38,703 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,703 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,725 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,725 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,730 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,731 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,733 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,735 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,736 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,748 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:25:38,749 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:25:38,749 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:25:38,749 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:25:38,750 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (1/1) ...
[2025-05-07 17:25:38,752 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:25:38,763 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:25:38,772 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 17:25:38,775 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 17:25:38,784 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:25:38,785 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:25:38,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:25:38,785 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_3_0 given in one single declaration
[2025-05-07 17:25:38,785 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_3_0
[2025-05-07 17:25:38,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_3_0
[2025-05-07 17:25:38,785 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,785 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__25_26_0
[2025-05-07 17:25:38,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__25_26_0
[2025-05-07 17:25:38,785 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,785 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_f__25_26_0
[2025-05-07 17:25:38,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_f__25_26_0
[2025-05-07 17:25:38,785 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,785 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__25_26_0
[2025-05-07 17:25:38,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__25_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,786 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__25_26_0
[2025-05-07 17:25:38,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__25_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_f_24_26_0 given in one single declaration
[2025-05-07 17:25:38,786 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_f_24_26_0
[2025-05-07 17:25:38,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_f_24_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_if_header_f_17_26_0 given in one single declaration
[2025-05-07 17:25:38,786 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_if_header_f_17_26_0
[2025-05-07 17:25:38,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_if_header_f_17_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_24_26_0 given in one single declaration
[2025-05-07 17:25:38,786 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_24_26_0
[2025-05-07 17:25:38,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_24_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,786 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__25_26_0
[2025-05-07 17:25:38,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__25_26_0
[2025-05-07 17:25:38,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_if_true_f_16_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_if_true_f_16_26_0
[2025-05-07 17:25:38,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_if_true_f_16_26_0
[2025-05-07 17:25:38,787 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__25_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__25_26_0
[2025-05-07 17:25:38,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__25_26_0
[2025-05-07 17:25:38,787 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_26_0
[2025-05-07 17:25:38,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_26_0
[2025-05-07 17:25:38,787 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_26_0
[2025-05-07 17:25:38,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_26_0
[2025-05-07 17:25:38,787 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_16_C_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_16_C_26_0
[2025-05-07 17:25:38,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_16_C_26_0
[2025-05-07 17:25:38,787 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_13_C_26_0 given in one single declaration
[2025-05-07 17:25:38,787 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_13_C_26_0
[2025-05-07 17:25:38,788 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_13_C_26_0
[2025-05-07 17:25:38,788 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_15_C_26_0 given in one single declaration
[2025-05-07 17:25:38,788 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_15_C_26_0
[2025-05-07 17:25:38,788 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_15_C_26_0
[2025-05-07 17:25:38,788 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_14_C_26_0 given in one single declaration
[2025-05-07 17:25:38,788 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_14_C_26_0
[2025-05-07 17:25:38,788 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_14_C_26_0
[2025-05-07 17:25:38,788 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:25:38,788 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:25:38,788 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:25:38,891 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:25:38,893 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:25:39,052 INFO  L?                        ?]: Removed 125 outVars from TransFormulas that were not future-live.
[2025-05-07 17:25:39,052 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:25:39,060 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:25:39,061 INFO  L312             CfgBuilder]: Removed 7 assume(true) statements.
[2025-05-07 17:25:39,061 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:25:39 BoogieIcfgContainer
[2025-05-07 17:25:39,061 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:25:39,062 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:25:39,063 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:25:39,065 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:25:39,065 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:25:38" (1/3) ...
[2025-05-07 17:25:39,066 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187cbc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:25:39, skipping insertion in model container
[2025-05-07 17:25:39,066 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:25:38" (2/3) ...
[2025-05-07 17:25:39,066 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187cbc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:25:39, skipping insertion in model container
[2025-05-07 17:25:39,066 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:25:39" (3/3) ...
[2025-05-07 17:25:39,067 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:25:39,077 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:25:39,078 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 19 procedures, 75 locations, 108 edges, 19 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:25:39,105 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:25:39,113 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;@8da0414, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:25:39,113 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:25:39,115 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 75 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 23 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24)
[2025-05-07 17:25:39,121 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:25:39,121 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:25:39,122 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:25:39,122 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:25:39,125 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:25:39,126 INFO  L85        PathProgramCache]: Analyzing trace with hash 564344342, now seen corresponding path program 1 times
[2025-05-07 17:25:39,130 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:25:39,131 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123887039]
[2025-05-07 17:25:39,131 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:25:39,131 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:25:39,174 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:25:39,191 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:25:39,192 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:25:39,192 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:25:39,365 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 17:25:39,366 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:25:39,366 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123887039]
[2025-05-07 17:25:39,366 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123887039] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:25:39,367 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:25:39,369 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:25:39,370 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242245358]
[2025-05-07 17:25:39,370 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:25:39,373 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:25:39,373 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:25:39,391 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:25:39,391 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:25:39,392 INFO  L87              Difference]: Start difference. First operand  has 75 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 23 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 20 states have call predecessors, (24), 23 states have call successors, (24) Second operand  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:25:39,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:25:39,432 INFO  L93              Difference]: Finished difference Result 77 states and 86 transitions.
[2025-05-07 17:25:39,436 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:25:39,438 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59
[2025-05-07 17:25:39,438 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:25:39,444 INFO  L225             Difference]: With dead ends: 77
[2025-05-07 17:25:39,445 INFO  L226             Difference]: Without dead ends: 73
[2025-05-07 17:25:39,446 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 17:25:39,449 INFO  L437           NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 239 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 17:25:39,450 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:25:39,468 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2025-05-07 17:25:39,485 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71.
[2025-05-07 17:25:39,486 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 21 states have call successors, (22), 18 states have call predecessors, (22), 18 states have return successors, (22), 19 states have call predecessors, (22), 21 states have call successors, (22)
[2025-05-07 17:25:39,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions.
[2025-05-07 17:25:39,490 INFO  L79                 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 59
[2025-05-07 17:25:39,490 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:25:39,490 INFO  L485      AbstractCegarLoop]: Abstraction has 71 states and 77 transitions.
[2025-05-07 17:25:39,490 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:25:39,490 INFO  L278                IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions.
[2025-05-07 17:25:39,492 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:25:39,492 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:25:39,492 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:25:39,492 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:25:39,492 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:25:39,493 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:25:39,493 INFO  L85        PathProgramCache]: Analyzing trace with hash -460402150, now seen corresponding path program 1 times
[2025-05-07 17:25:39,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:25:39,493 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786103613]
[2025-05-07 17:25:39,493 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:25:39,493 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:25:39,522 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:25:39,549 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:25:39,549 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:25:39,549 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:25:39,743 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 17:25:39,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:25:39,743 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786103613]
[2025-05-07 17:25:39,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786103613] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:25:39,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:25:39,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2025-05-07 17:25:39,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977752396]
[2025-05-07 17:25:39,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:25:39,744 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-05-07 17:25:39,745 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:25:39,745 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-05-07 17:25:39,745 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2025-05-07 17:25:39,746 INFO  L87              Difference]: Start difference. First operand 71 states and 77 transitions. Second operand  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:25:39,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:25:39,884 INFO  L93              Difference]: Finished difference Result 80 states and 88 transitions.
[2025-05-07 17:25:39,884 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-05-07 17:25:39,885 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) Word has length 59
[2025-05-07 17:25:39,885 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:25:39,886 INFO  L225             Difference]: With dead ends: 80
[2025-05-07 17:25:39,886 INFO  L226             Difference]: Without dead ends: 80
[2025-05-07 17:25:39,886 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2025-05-07 17:25:39,887 INFO  L437           NwaCegarLoop]: 70 mSDtfsCounter, 3 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:25:39,888 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:25:39,888 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-05-07 17:25:39,895 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2025-05-07 17:25:39,895 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 22 states have call successors, (23), 18 states have call predecessors, (23), 22 states have return successors, (28), 24 states have call predecessors, (28), 22 states have call successors, (28)
[2025-05-07 17:25:39,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions.
[2025-05-07 17:25:39,897 INFO  L79                 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 59
[2025-05-07 17:25:39,898 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:25:39,898 INFO  L485      AbstractCegarLoop]: Abstraction has 80 states and 88 transitions.
[2025-05-07 17:25:39,898 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:25:39,898 INFO  L278                IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions.
[2025-05-07 17:25:39,900 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:25:39,900 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:25:39,900 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:25:39,900 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:25:39,900 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:25:39,901 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:25:39,901 INFO  L85        PathProgramCache]: Analyzing trace with hash 2131854200, now seen corresponding path program 1 times
[2025-05-07 17:25:39,901 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:25:39,901 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558581755]
[2025-05-07 17:25:39,901 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:25:39,901 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:25:39,927 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:25:39,939 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:25:39,939 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:25:39,939 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:25:40,044 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 17:25:40,044 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:25:40,044 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558581755]
[2025-05-07 17:25:40,044 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558581755] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:25:40,044 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:25:40,044 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-05-07 17:25:40,044 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983495693]
[2025-05-07 17:25:40,044 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:25:40,045 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-05-07 17:25:40,045 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:25:40,046 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-05-07 17:25:40,046 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:25:40,046 INFO  L87              Difference]: Start difference. First operand 80 states and 88 transitions. Second operand  has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:25:40,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:25:40,086 INFO  L93              Difference]: Finished difference Result 78 states and 84 transitions.
[2025-05-07 17:25:40,087 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-05-07 17:25:40,087 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59
[2025-05-07 17:25:40,087 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:25:40,088 INFO  L225             Difference]: With dead ends: 78
[2025-05-07 17:25:40,088 INFO  L226             Difference]: Without dead ends: 76
[2025-05-07 17:25:40,088 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:25:40,088 INFO  L437           NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:25:40,088 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 272 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:25:40,089 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2025-05-07 17:25:40,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76.
[2025-05-07 17:25:40,093 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 76 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 35 states have internal predecessors, (35), 21 states have call successors, (21), 17 states have call predecessors, (21), 21 states have return successors, (25), 23 states have call predecessors, (25), 21 states have call successors, (25)
[2025-05-07 17:25:40,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions.
[2025-05-07 17:25:40,094 INFO  L79                 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 59
[2025-05-07 17:25:40,094 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:25:40,094 INFO  L485      AbstractCegarLoop]: Abstraction has 76 states and 81 transitions.
[2025-05-07 17:25:40,094 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:25:40,094 INFO  L278                IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions.
[2025-05-07 17:25:40,095 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2025-05-07 17:25:40,095 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:25:40,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:25:40,095 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:25:40,095 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:25:40,095 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:25:40,096 INFO  L85        PathProgramCache]: Analyzing trace with hash -891985026, now seen corresponding path program 1 times
[2025-05-07 17:25:40,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:25:40,096 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746577613]
[2025-05-07 17:25:40,096 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:25:40,096 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:25:40,125 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes.
[2025-05-07 17:25:40,142 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements.
[2025-05-07 17:25:40,142 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:25:40,142 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:25:40,290 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 17:25:40,290 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:25:40,291 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746577613]
[2025-05-07 17:25:40,291 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746577613] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:25:40,291 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:25:40,291 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2025-05-07 17:25:40,291 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698213870]
[2025-05-07 17:25:40,291 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:25:40,291 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2025-05-07 17:25:40,291 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:25:40,292 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2025-05-07 17:25:40,292 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2025-05-07 17:25:40,292 INFO  L87              Difference]: Start difference. First operand 76 states and 81 transitions. Second operand  has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 5 states have call successors, (17)
[2025-05-07 17:25:40,386 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:25:40,386 INFO  L93              Difference]: Finished difference Result 70 states and 75 transitions.
[2025-05-07 17:25:40,387 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2025-05-07 17:25:40,387 INFO  L79                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 5 states have call successors, (17) Word has length 63
[2025-05-07 17:25:40,387 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:25:40,387 INFO  L225             Difference]: With dead ends: 70
[2025-05-07 17:25:40,387 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:25:40,388 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132
[2025-05-07 17:25:40,388 INFO  L437           NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:25:40,389 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 545 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:25:40,389 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:25:40,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:25:40,389 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 17:25:40,389 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:25:40,390 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63
[2025-05-07 17:25:40,390 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:25:40,390 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:25:40,390 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 5 states have call successors, (17), 1 states have call predecessors, (17), 9 states have return successors, (17), 10 states have call predecessors, (17), 5 states have call successors, (17)
[2025-05-07 17:25:40,390 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:25:40,390 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:25:40,392 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:25:40,393 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:25:40,396 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:25:40,398 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:25:40,401 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:25:40 BoogieIcfgContainer
[2025-05-07 17:25:40,401 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:25:40,401 INFO  L158              Benchmark]: Toolchain (without parser) took 1740.84ms. Allocated memory is still 234.9MB. Free memory was 149.4MB in the beginning and 127.5MB in the end (delta: 21.9MB). Peak memory consumption was 42.7MB. Max. memory is 33.6GB.
[2025-05-07 17:25:40,402 INFO  L158              Benchmark]: SmtParser took 0.21ms. Allocated memory is still 234.9MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:25:40,402 INFO  L158              Benchmark]: ChcToBoogie took 30.12ms. Allocated memory is still 234.9MB. Free memory was 149.4MB in the beginning and 147.3MB in the end (delta: 2.2MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:25:40,402 INFO  L158              Benchmark]: Boogie Preprocessor took 57.11ms. Allocated memory is still 234.9MB. Free memory was 147.3MB in the beginning and 144.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:25:40,402 INFO  L158              Benchmark]: RCFGBuilder took 312.09ms. Allocated memory is still 234.9MB. Free memory was 144.4MB in the beginning and 176.3MB in the end (delta: -31.9MB). Peak memory consumption was 25.2MB. Max. memory is 33.6GB.
[2025-05-07 17:25:40,403 INFO  L158              Benchmark]: TraceAbstraction took 1338.28ms. Allocated memory is still 234.9MB. Free memory was 175.7MB in the beginning and 127.5MB in the end (delta: 48.2MB). Peak memory consumption was 51.0MB. Max. memory is 33.6GB.
[2025-05-07 17:25:40,404 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.21ms. Allocated memory is still 234.9MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 30.12ms. Allocated memory is still 234.9MB. Free memory was 149.4MB in the beginning and 147.3MB in the end (delta: 2.2MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * Boogie Preprocessor took 57.11ms. Allocated memory is still 234.9MB. Free memory was 147.3MB in the beginning and 144.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 312.09ms. Allocated memory is still 234.9MB. Free memory was 144.4MB in the beginning and 176.3MB in the end (delta: -31.9MB). Peak memory consumption was 25.2MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1338.28ms. Allocated memory is still 234.9MB. Free memory was 175.7MB in the beginning and 127.5MB in the end (delta: 48.2MB). Peak memory consumption was 51.0MB. 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 19 procedures, 75 locations, 108 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 1666 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1386 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 280 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=2, InterpolantAutomatonStates: 30, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 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 17:25:40,416 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
