./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_3_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:28:05,367 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:28:05,404 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46228680-75b3-436b-93f5-365560625ac4/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:28:05,407 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:28:05,407 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:28:05,421 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:28:05,421 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:28:05,421 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:28:05,421 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:28:05,421 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:28:05,422 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:28:05,422 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:28:05,422 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:05,422 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:28:05,422 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:28:05,423 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:28:05,423 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:28:05,642 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:28:05,650 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:28:05,652 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:28:05,654 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:28:05,654 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:28:05,655 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46228680-75b3-436b-93f5-365560625ac4/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_3_no_adts_000.smt2
[2025-05-07 17:28:05,656 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:28:05,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:28:05,919 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46228680-75b3-436b-93f5-365560625ac4/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_3_no_adts_000.smt2
[2025-05-07 17:28:05,922 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:28:05,923 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:28:05,924 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:28:05,924 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:28:05,924 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:28:05,926 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,953 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05 Unit
[2025-05-07 17:28:05,953 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:28:05,954 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:28:05,954 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:28:05,954 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:28:05,965 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,965 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,986 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,986 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,990 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,990 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,992 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,993 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:05,994 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:06,005 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:28:06,005 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:28:06,005 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:28:06,005 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:28:06,006 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (1/1) ...
[2025-05-07 17:28:06,008 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:06,017 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:28:06,025 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 17:28:06,027 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 17:28:06,034 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:28:06,034 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:28:06,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:28:06,034 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_8_0 given in one single declaration
[2025-05-07 17:28:06,034 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_8_0
[2025-05-07 17:28:06,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_8_0
[2025-05-07 17:28:06,035 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,035 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__42_43_0
[2025-05-07 17:28:06,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__42_43_0
[2025-05-07 17:28:06,035 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,035 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_f__42_43_0
[2025-05-07 17:28:06,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_f__42_43_0
[2025-05-07 17:28:06,035 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,035 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__42_43_0
[2025-05-07 17:28:06,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__42_43_0
[2025-05-07 17:28:06,036 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,036 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_f__42_43_0
[2025-05-07 17:28:06,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_f__42_43_0
[2025-05-07 17:28:06,036 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_41_43_0 given in one single declaration
[2025-05-07 17:28:06,036 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_41_43_0
[2025-05-07 17:28:06,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_41_43_0
[2025-05-07 17:28:06,036 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,036 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__42_43_0
[2025-05-07 17:28:06,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,037 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,037 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,037 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__42_43_0
[2025-05-07 17:28:06,037 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:06,037 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__42_43_0
[2025-05-07 17:28:06,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__42_43_0
[2025-05-07 17:28:06,038 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_43_0 given in one single declaration
[2025-05-07 17:28:06,038 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_43_0
[2025-05-07 17:28:06,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_43_0
[2025-05-07 17:28:06,038 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_43_0 given in one single declaration
[2025-05-07 17:28:06,038 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_43_0
[2025-05-07 17:28:06,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_43_0
[2025-05-07 17:28:06,038 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_16_C_43_0 given in one single declaration
[2025-05-07 17:28:06,038 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_16_C_43_0
[2025-05-07 17:28:06,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_16_C_43_0
[2025-05-07 17:28:06,038 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_13_C_43_0 given in one single declaration
[2025-05-07 17:28:06,038 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_13_C_43_0
[2025-05-07 17:28:06,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_13_C_43_0
[2025-05-07 17:28:06,039 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_15_C_43_0 given in one single declaration
[2025-05-07 17:28:06,039 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_15_C_43_0
[2025-05-07 17:28:06,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_15_C_43_0
[2025-05-07 17:28:06,039 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_14_C_43_0 given in one single declaration
[2025-05-07 17:28:06,039 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_14_C_43_0
[2025-05-07 17:28:06,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_14_C_43_0
[2025-05-07 17:28:06,039 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:28:06,039 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:28:06,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:28:06,146 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:28:06,148 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:28:06,343 INFO  L?                        ?]: Removed 163 outVars from TransFormulas that were not future-live.
[2025-05-07 17:28:06,343 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:28:06,350 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:28:06,350 INFO  L312             CfgBuilder]: Removed 10 assume(true) statements.
[2025-05-07 17:28:06,351 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:06 BoogieIcfgContainer
[2025-05-07 17:28:06,351 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:28:06,352 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:28:06,352 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:28:06,355 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:28:06,355 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:05" (1/3) ...
[2025-05-07 17:28:06,355 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6941931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:28:06, skipping insertion in model container
[2025-05-07 17:28:06,355 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:05" (2/3) ...
[2025-05-07 17:28:06,355 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6941931e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:28:06, skipping insertion in model container
[2025-05-07 17:28:06,355 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:06" (3/3) ...
[2025-05-07 17:28:06,356 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:28:06,366 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:28:06,367 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 19 procedures, 74 locations, 113 edges, 19 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:28:06,395 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:28:06,403 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;@4255c5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:28:06,403 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:28:06,406 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 74 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 22 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 20 states have call predecessors, (26), 22 states have call successors, (26)
[2025-05-07 17:28:06,411 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:06,411 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:06,412 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 17:28:06,412 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:06,415 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:06,416 INFO  L85        PathProgramCache]: Analyzing trace with hash 60022431, now seen corresponding path program 1 times
[2025-05-07 17:28:06,421 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:06,421 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89687909]
[2025-05-07 17:28:06,421 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:06,422 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:06,469 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:06,524 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:06,524 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:06,525 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:06,595 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 17:28:06,596 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:06,596 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89687909]
[2025-05-07 17:28:06,596 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89687909] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:06,596 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:06,598 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2025-05-07 17:28:06,599 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810745230]
[2025-05-07 17:28:06,600 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:06,602 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-05-07 17:28:06,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:06,620 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-05-07 17:28:06,620 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-05-07 17:28:06,621 INFO  L87              Difference]: Start difference. First operand  has 74 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 22 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 20 states have call predecessors, (26), 22 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2025-05-07 17:28:06,650 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:06,651 INFO  L93              Difference]: Finished difference Result 63 states and 70 transitions.
[2025-05-07 17:28:06,651 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-05-07 17:28:06,652 INFO  L79                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 51
[2025-05-07 17:28:06,652 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:06,657 INFO  L225             Difference]: With dead ends: 63
[2025-05-07 17:28:06,658 INFO  L226             Difference]: Without dead ends: 60
[2025-05-07 17:28:06,659 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-05-07 17:28:06,662 INFO  L437           NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:06,662 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:06,677 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2025-05-07 17:28:06,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2025-05-07 17:28:06,698 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 19 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20)
[2025-05-07 17:28:06,701 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions.
[2025-05-07 17:28:06,702 INFO  L79                 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 51
[2025-05-07 17:28:06,707 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:06,707 INFO  L485      AbstractCegarLoop]: Abstraction has 60 states and 67 transitions.
[2025-05-07 17:28:06,707 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2025-05-07 17:28:06,708 INFO  L278                IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions.
[2025-05-07 17:28:06,709 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:06,709 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:06,709 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 17:28:06,709 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:28:06,709 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:06,710 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:06,710 INFO  L85        PathProgramCache]: Analyzing trace with hash 997493003, now seen corresponding path program 1 times
[2025-05-07 17:28:06,710 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:06,710 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899422714]
[2025-05-07 17:28:06,710 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:06,710 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:06,743 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:06,796 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:06,796 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:06,796 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:06,993 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 17:28:06,993 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:06,993 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899422714]
[2025-05-07 17:28:06,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899422714] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:06,994 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:06,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:28:06,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183475447]
[2025-05-07 17:28:06,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:06,995 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:28:06,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:06,996 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:28:06,996 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:28:06,996 INFO  L87              Difference]: Start difference. First operand 60 states and 67 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), 6 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:07,039 INFO  L93              Difference]: Finished difference Result 65 states and 73 transitions.
[2025-05-07 17:28:07,039 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:28:07,039 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), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:28:07,040 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:07,041 INFO  L225             Difference]: With dead ends: 65
[2025-05-07 17:28:07,041 INFO  L226             Difference]: Without dead ends: 65
[2025-05-07 17:28:07,041 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 17:28:07,042 INFO  L437           NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 328 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 17:28:07,042 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 328 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:07,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2025-05-07 17:28:07,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2025-05-07 17:28:07,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 20 states have call successors, (21), 15 states have call predecessors, (21), 17 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23)
[2025-05-07 17:28:07,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions.
[2025-05-07 17:28:07,050 INFO  L79                 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 51
[2025-05-07 17:28:07,050 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:07,050 INFO  L485      AbstractCegarLoop]: Abstraction has 65 states and 73 transitions.
[2025-05-07 17:28:07,051 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), 6 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,051 INFO  L278                IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions.
[2025-05-07 17:28:07,052 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:07,052 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:07,052 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 17:28:07,052 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:28:07,052 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:07,053 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:07,053 INFO  L85        PathProgramCache]: Analyzing trace with hash -655379029, now seen corresponding path program 1 times
[2025-05-07 17:28:07,053 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:07,053 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927650205]
[2025-05-07 17:28:07,053 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:07,053 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:07,080 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:07,085 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:07,085 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:07,085 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:07,162 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 17:28:07,162 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:07,162 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927650205]
[2025-05-07 17:28:07,162 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927650205] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:07,162 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:07,163 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:28:07,163 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642214922]
[2025-05-07 17:28:07,163 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:07,163 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:28:07,163 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:07,164 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:28:07,164 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:28:07,164 INFO  L87              Difference]: Start difference. First operand 65 states and 73 transitions. Second operand  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:07,175 INFO  L93              Difference]: Finished difference Result 69 states and 77 transitions.
[2025-05-07 17:28:07,176 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:28:07,176 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:28:07,176 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:07,177 INFO  L225             Difference]: With dead ends: 69
[2025-05-07 17:28:07,177 INFO  L226             Difference]: Without dead ends: 65
[2025-05-07 17:28:07,177 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 17:28:07,178 INFO  L437           NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 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 17:28:07,178 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:07,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2025-05-07 17:28:07,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63.
[2025-05-07 17:28:07,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 63 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 18 states have call successors, (19), 15 states have call predecessors, (19), 17 states have return successors, (21), 19 states have call predecessors, (21), 18 states have call successors, (21)
[2025-05-07 17:28:07,183 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions.
[2025-05-07 17:28:07,183 INFO  L79                 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 51
[2025-05-07 17:28:07,183 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:07,184 INFO  L485      AbstractCegarLoop]: Abstraction has 63 states and 68 transitions.
[2025-05-07 17:28:07,184 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,184 INFO  L278                IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions.
[2025-05-07 17:28:07,185 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:07,185 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:07,185 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 17:28:07,185 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:28:07,185 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:07,185 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:07,185 INFO  L85        PathProgramCache]: Analyzing trace with hash 2134234535, now seen corresponding path program 1 times
[2025-05-07 17:28:07,186 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:07,186 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327458596]
[2025-05-07 17:28:07,186 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:07,186 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:07,206 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:07,217 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:07,217 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:07,217 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:07,386 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 17:28:07,386 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:07,387 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327458596]
[2025-05-07 17:28:07,387 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327458596] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:07,387 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:07,387 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:28:07,387 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016603663]
[2025-05-07 17:28:07,387 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:07,387 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:28:07,387 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:07,387 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:28:07,388 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:28:07,388 INFO  L87              Difference]: Start difference. First operand 63 states and 68 transitions. Second operand  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:28:07,445 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:07,445 INFO  L93              Difference]: Finished difference Result 57 states and 62 transitions.
[2025-05-07 17:28:07,445 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:28:07,445 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), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 51
[2025-05-07 17:28:07,446 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:07,446 INFO  L225             Difference]: With dead ends: 57
[2025-05-07 17:28:07,446 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:28:07,446 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 17:28:07,446 INFO  L437           NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:07,446 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:07,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:28:07,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:28:07,447 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 17:28:07,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:28:07,447 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2025-05-07 17:28:07,447 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:07,447 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:28:07,447 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), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:28:07,447 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:28:07,447 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:28:07,449 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:28:07,450 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:28:07,452 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:28:07,453 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:28:07,456 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:28:07 BoogieIcfgContainer
[2025-05-07 17:28:07,456 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:28:07,456 INFO  L158              Benchmark]: Toolchain (without parser) took 1532.77ms. Allocated memory is still 234.9MB. Free memory was 150.6MB in the beginning and 180.0MB in the end (delta: -29.3MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:07,456 INFO  L158              Benchmark]: SmtParser took 0.24ms. Allocated memory is still 234.9MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:07,456 INFO  L158              Benchmark]: ChcToBoogie took 29.41ms. Allocated memory is still 234.9MB. Free memory was 150.6MB in the beginning and 147.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:07,456 INFO  L158              Benchmark]: Boogie Preprocessor took 51.10ms. Allocated memory is still 234.9MB. Free memory was 147.9MB in the beginning and 144.8MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:07,457 INFO  L158              Benchmark]: RCFGBuilder took 345.76ms. Allocated memory is still 234.9MB. Free memory was 144.8MB in the beginning and 187.7MB in the end (delta: -42.9MB). Peak memory consumption was 42.6MB. Max. memory is 33.6GB.
[2025-05-07 17:28:07,457 INFO  L158              Benchmark]: TraceAbstraction took 1103.47ms. Allocated memory is still 234.9MB. Free memory was 187.3MB in the beginning and 180.0MB in the end (delta: 7.3MB). Peak memory consumption was 1.8MB. Max. memory is 33.6GB.
[2025-05-07 17:28:07,458 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.24ms. Allocated memory is still 234.9MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 29.41ms. Allocated memory is still 234.9MB. Free memory was 150.6MB in the beginning and 147.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 51.10ms. Allocated memory is still 234.9MB. Free memory was 147.9MB in the beginning and 144.8MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 345.76ms. Allocated memory is still 234.9MB. Free memory was 144.8MB in the beginning and 187.7MB in the end (delta: -42.9MB). Peak memory consumption was 42.6MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1103.47ms. Allocated memory is still 234.9MB. Free memory was 187.3MB in the beginning and 180.0MB in the end (delta: 7.3MB). Peak memory consumption was 1.8MB. 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, 74 locations, 113 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, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 898 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 639 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 259 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 0.5s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 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 17:28:07,467 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
