./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/for_loop_2.sol_0_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:26:31,673 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:26:31,724 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb4f0b0-9437-4371-b0e7-d0cee72ed8e4/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:26:31,727 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:26:31,728 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:26:31,745 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:26:31,745 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:26:31,745 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:26:31,746 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:26:31,746 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:26:31,746 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:26:31,746 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:26:31,746 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:26:31,746 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:26:31,746 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:26:31,747 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:31,747 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:26:31,747 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:26:31,748 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:26:31,748 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:26:31,748 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:26:31,748 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:26:31,962 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:26:31,967 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:26:31,969 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:26:31,970 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:26:31,970 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:26:31,971 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb4f0b0-9437-4371-b0e7-d0cee72ed8e4/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/for_loop_2.sol_0_no_adts_000.smt2
[2025-05-07 17:26:31,972 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:26:31,975 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:26:32,148 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb4f0b0-9437-4371-b0e7-d0cee72ed8e4/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/for_loop_2.sol_0_no_adts_000.smt2
[2025-05-07 17:26:32,150 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:26:32,151 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:26:32,152 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:26:32,152 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:26:32,152 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:26:32,154 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,178 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32 Unit
[2025-05-07 17:26:32,179 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:26:32,179 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:26:32,179 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:26:32,180 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:26:32,191 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,191 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,210 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,210 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,213 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,213 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,215 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,216 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,217 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,226 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:26:32,227 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:26:32,227 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:26:32,227 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:26:32,228 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (1/1) ...
[2025-05-07 17:26:32,229 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:32,238 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:26:32,247 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 17:26:32,249 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 17:26:32,257 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:26:32,257 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:26:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:26:32,257 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_3_0 given in one single declaration
[2025-05-07 17:26:32,257 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_3_0
[2025-05-07 17:26:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_3_0
[2025-05-07 17:26:32,257 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_18_0 given in one single declaration
[2025-05-07 17:26:32,257 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_18_0
[2025-05-07 17:26:32,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_18_0
[2025-05-07 17:26:32,257 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_18_0 given in one single declaration
[2025-05-07 17:26:32,258 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_18_0
[2025-05-07 17:26:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_18_0
[2025-05-07 17:26:32,258 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_16_C_18_0 given in one single declaration
[2025-05-07 17:26:32,258 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_16_C_18_0
[2025-05-07 17:26:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_16_C_18_0
[2025-05-07 17:26:32,258 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_13_C_18_0 given in one single declaration
[2025-05-07 17:26:32,258 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_13_C_18_0
[2025-05-07 17:26:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_13_C_18_0
[2025-05-07 17:26:32,258 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_15_C_18_0 given in one single declaration
[2025-05-07 17:26:32,258 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_15_C_18_0
[2025-05-07 17:26:32,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_15_C_18_0
[2025-05-07 17:26:32,259 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_14_C_18_0 given in one single declaration
[2025-05-07 17:26:32,259 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_14_C_18_0
[2025-05-07 17:26:32,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_14_C_18_0
[2025-05-07 17:26:32,259 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,259 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__17_18_0
[2025-05-07 17:26:32,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__17_18_0
[2025-05-07 17:26:32,259 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,259 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_f__17_18_0
[2025-05-07 17:26:32,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_f__17_18_0
[2025-05-07 17:26:32,259 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,259 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__17_18_0
[2025-05-07 17:26:32,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__17_18_0
[2025-05-07 17:26:32,260 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,260 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__17_18_0
[2025-05-07 17:26:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__17_18_0
[2025-05-07 17:26:32,260 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_f_16_18_0 given in one single declaration
[2025-05-07 17:26:32,260 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_f_16_18_0
[2025-05-07 17:26:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_f_16_18_0
[2025-05-07 17:26:32,260 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_for_header_f_15_18_0 given in one single declaration
[2025-05-07 17:26:32,260 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_for_header_f_15_18_0
[2025-05-07 17:26:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_for_header_f_15_18_0
[2025-05-07 17:26:32,260 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_16_18_0 given in one single declaration
[2025-05-07 17:26:32,260 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_16_18_0
[2025-05-07 17:26:32,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_16_18_0
[2025-05-07 17:26:32,260 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,260 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__17_18_0
[2025-05-07 17:26:32,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__17_18_0
[2025-05-07 17:26:32,261 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_for_body_f_14_18_0 given in one single declaration
[2025-05-07 17:26:32,261 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_for_body_f_14_18_0
[2025-05-07 17:26:32,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_for_body_f_14_18_0
[2025-05-07 17:26:32,261 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__17_18_0 given in one single declaration
[2025-05-07 17:26:32,261 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__17_18_0
[2025-05-07 17:26:32,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__17_18_0
[2025-05-07 17:26:32,261 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:26:32,261 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:26:32,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:26:32,370 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:26:32,371 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:26:32,546 INFO  L?                        ?]: Removed 119 outVars from TransFormulas that were not future-live.
[2025-05-07 17:26:32,546 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:26:32,555 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:26:32,555 INFO  L312             CfgBuilder]: Removed 8 assume(true) statements.
[2025-05-07 17:26:32,555 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:32 BoogieIcfgContainer
[2025-05-07 17:26:32,555 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:26:32,557 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:26:32,557 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:26:32,560 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:26:32,560 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:32" (1/3) ...
[2025-05-07 17:26:32,561 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7771046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:26:32, skipping insertion in model container
[2025-05-07 17:26:32,561 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:32" (2/3) ...
[2025-05-07 17:26:32,561 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7771046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:26:32, skipping insertion in model container
[2025-05-07 17:26:32,561 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:32" (3/3) ...
[2025-05-07 17:26:32,562 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:26:32,572 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:26:32,574 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 19 procedures, 74 locations, 107 edges, 19 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:26:32,604 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:26:32,613 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;@1c2b5866, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:26:32,613 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:26:32,616 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 74 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 states have internal predecessors, (35), 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 17:26:32,623 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:26:32,623 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:32,623 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 17:26:32,624 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:32,627 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:32,627 INFO  L85        PathProgramCache]: Analyzing trace with hash -2104203450, now seen corresponding path program 1 times
[2025-05-07 17:26:32,633 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:32,633 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459356495]
[2025-05-07 17:26:32,633 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:32,634 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:32,690 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:26:32,723 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:26:32,723 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:32,724 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:33,003 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 17:26:33,003 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:33,003 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459356495]
[2025-05-07 17:26:33,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459356495] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:33,004 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:33,005 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:26:33,006 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810066422]
[2025-05-07 17:26:33,007 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:33,010 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:26:33,010 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:33,036 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:26:33,036 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:26:33,039 INFO  L87              Difference]: Start difference. First operand  has 74 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 35 states have internal predecessors, (35), 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 17:26:33,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:33,085 INFO  L93              Difference]: Finished difference Result 70 states and 78 transitions.
[2025-05-07 17:26:33,086 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:26:33,087 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 17:26:33,087 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:33,093 INFO  L225             Difference]: With dead ends: 70
[2025-05-07 17:26:33,093 INFO  L226             Difference]: Without dead ends: 68
[2025-05-07 17:26:33,095 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 17:26:33,097 INFO  L437           NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:33,098 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:33,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2025-05-07 17:26:33,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2025-05-07 17:26:33,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 31 states have internal predecessors, (31), 22 states have call successors, (22), 17 states have call predecessors, (22), 17 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22)
[2025-05-07 17:26:33,129 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions.
[2025-05-07 17:26:33,130 INFO  L79                 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 59
[2025-05-07 17:26:33,130 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:33,130 INFO  L485      AbstractCegarLoop]: Abstraction has 68 states and 75 transitions.
[2025-05-07 17:26:33,131 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 17:26:33,131 INFO  L278                IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions.
[2025-05-07 17:26:33,133 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2025-05-07 17:26:33,133 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:33,133 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]
[2025-05-07 17:26:33,133 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:26:33,134 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:33,134 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:33,134 INFO  L85        PathProgramCache]: Analyzing trace with hash 1055353914, now seen corresponding path program 1 times
[2025-05-07 17:26:33,134 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:33,135 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729686338]
[2025-05-07 17:26:33,135 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:33,135 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:33,172 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes.
[2025-05-07 17:26:33,192 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements.
[2025-05-07 17:26:33,192 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:33,192 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:33,301 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 17:26:33,301 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:33,302 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729686338]
[2025-05-07 17:26:33,302 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729686338] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:33,302 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:33,302 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:26:33,302 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544510646]
[2025-05-07 17:26:33,302 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:33,303 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:26:33,303 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:33,304 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:26:33,304 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:26:33,304 INFO  L87              Difference]: Start difference. First operand 68 states and 75 transitions. Second operand  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)
[2025-05-07 17:26:33,315 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:33,315 INFO  L93              Difference]: Finished difference Result 72 states and 79 transitions.
[2025-05-07 17:26:33,316 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:26:33,316 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 58
[2025-05-07 17:26:33,316 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:33,317 INFO  L225             Difference]: With dead ends: 72
[2025-05-07 17:26:33,317 INFO  L226             Difference]: Without dead ends: 68
[2025-05-07 17:26:33,317 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 17:26:33,317 INFO  L437           NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 218 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 17:26:33,318 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 218 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:33,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2025-05-07 17:26:33,322 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66.
[2025-05-07 17:26:33,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 30 states have internal predecessors, (30), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20)
[2025-05-07 17:26:33,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions.
[2025-05-07 17:26:33,323 INFO  L79                 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 58
[2025-05-07 17:26:33,323 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:33,323 INFO  L485      AbstractCegarLoop]: Abstraction has 66 states and 70 transitions.
[2025-05-07 17:26:33,324 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)
[2025-05-07 17:26:33,324 INFO  L278                IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions.
[2025-05-07 17:26:33,324 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2025-05-07 17:26:33,325 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:33,325 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]
[2025-05-07 17:26:33,325 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:26:33,325 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:33,325 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:33,325 INFO  L85        PathProgramCache]: Analyzing trace with hash 326223550, now seen corresponding path program 1 times
[2025-05-07 17:26:33,326 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:33,326 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105962613]
[2025-05-07 17:26:33,326 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:33,326 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:33,349 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes.
[2025-05-07 17:26:33,362 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements.
[2025-05-07 17:26:33,362 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:33,362 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:33,480 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 17:26:33,480 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:33,480 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105962613]
[2025-05-07 17:26:33,481 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105962613] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:33,481 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:33,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2025-05-07 17:26:33,481 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142773512]
[2025-05-07 17:26:33,481 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:33,481 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2025-05-07 17:26:33,481 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:33,482 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2025-05-07 17:26:33,482 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2025-05-07 17:26:33,482 INFO  L87              Difference]: Start difference. First operand 66 states and 70 transitions. Second operand  has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:26:33,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:33,558 INFO  L93              Difference]: Finished difference Result 77 states and 83 transitions.
[2025-05-07 17:26:33,559 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-05-07 17:26:33,559 INFO  L79                 Accepts]: Start accepts. Automaton has  has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 58
[2025-05-07 17:26:33,559 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:33,560 INFO  L225             Difference]: With dead ends: 77
[2025-05-07 17:26:33,560 INFO  L226             Difference]: Without dead ends: 77
[2025-05-07 17:26:33,560 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2025-05-07 17:26:33,560 INFO  L437           NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:33,561 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 500 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:26:33,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2025-05-07 17:26:33,565 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2025-05-07 17:26:33,565 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 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), 22 states have return successors, (27), 24 states have call predecessors, (27), 21 states have call successors, (27)
[2025-05-07 17:26:33,566 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions.
[2025-05-07 17:26:33,566 INFO  L79                 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 58
[2025-05-07 17:26:33,566 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:33,566 INFO  L485      AbstractCegarLoop]: Abstraction has 77 states and 83 transitions.
[2025-05-07 17:26:33,566 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:26:33,566 INFO  L278                IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions.
[2025-05-07 17:26:33,567 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:26:33,568 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:33,568 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:33,568 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:26:33,568 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:33,568 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:33,568 INFO  L85        PathProgramCache]: Analyzing trace with hash 947989371, now seen corresponding path program 1 times
[2025-05-07 17:26:33,568 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:33,568 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25998279]
[2025-05-07 17:26:33,568 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:33,569 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:33,590 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:26:33,596 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:26:33,596 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:33,596 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:33,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-05-07 17:26:33,767 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:33,768 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25998279]
[2025-05-07 17:26:33,768 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25998279] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:33,768 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:33,768 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-05-07 17:26:33,768 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397664240]
[2025-05-07 17:26:33,768 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:33,768 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-05-07 17:26:33,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:33,769 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-05-07 17:26:33,769 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:26:33,769 INFO  L87              Difference]: Start difference. First operand 77 states and 83 transitions. Second operand  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:26:33,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:33,813 INFO  L93              Difference]: Finished difference Result 44 states and 47 transitions.
[2025-05-07 17:26:33,813 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-05-07 17:26:33,813 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 66
[2025-05-07 17:26:33,813 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:33,813 INFO  L225             Difference]: With dead ends: 44
[2025-05-07 17:26:33,813 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:26:33,814 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 17:26:33,814 INFO  L437           NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:33,814 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 138 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:33,815 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:26:33,815 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:26:33,815 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 17:26:33,815 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:26:33,815 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66
[2025-05-07 17:26:33,815 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:33,815 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:26:33,815 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:26:33,815 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:26:33,816 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:26:33,817 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:26:33,818 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:26:33,820 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:26:33,821 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:26:33,824 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:26:33 BoogieIcfgContainer
[2025-05-07 17:26:33,824 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:26:33,824 INFO  L158              Benchmark]: Toolchain (without parser) took 1673.13ms. Allocated memory is still 234.9MB. Free memory was 156.5MB in the beginning and 126.2MB in the end (delta: 30.2MB). Peak memory consumption was 27.4MB. Max. memory is 33.6GB.
[2025-05-07 17:26:33,824 INFO  L158              Benchmark]: SmtParser took 0.20ms. Allocated memory is still 234.9MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:33,825 INFO  L158              Benchmark]: ChcToBoogie took 27.19ms. Allocated memory is still 234.9MB. Free memory was 156.4MB in the beginning and 154.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:33,825 INFO  L158              Benchmark]: Boogie Preprocessor took 47.04ms. Allocated memory is still 234.9MB. Free memory was 154.2MB in the beginning and 151.4MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:26:33,825 INFO  L158              Benchmark]: RCFGBuilder took 328.64ms. Allocated memory is still 234.9MB. Free memory was 151.4MB in the beginning and 127.9MB in the end (delta: 23.5MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:26:33,825 INFO  L158              Benchmark]: TraceAbstraction took 1266.54ms. Allocated memory is still 234.9MB. Free memory was 127.3MB in the beginning and 126.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:33,826 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.20ms. Allocated memory is still 234.9MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 27.19ms. Allocated memory is still 234.9MB. Free memory was 156.4MB in the beginning and 154.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 47.04ms. Allocated memory is still 234.9MB. Free memory was 154.2MB in the beginning and 151.4MB in the end (delta: 2.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * RCFGBuilder took 328.64ms. Allocated memory is still 234.9MB. Free memory was 151.4MB in the beginning and 127.9MB in the end (delta: 23.5MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1266.54ms. Allocated memory is still 234.9MB. Free memory was 127.3MB in the beginning and 126.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 19 procedures, 74 locations, 107 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 1080 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 826 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 254 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=3, InterpolantAutomatonStates: 22, 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, 0.7s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 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 17:26:33,836 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
