./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/blockchain_state/balance_receive_2.sol_1_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:29:10,026 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:29:10,064 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e456e6ce-0e11-4597-840a-baea105bb92b/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:29:10,067 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:29:10,067 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:29:10,080 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:29:10,081 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:29:10,081 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:29:10,081 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:29:10,081 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:29:10,081 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:29:10,081 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:29:10,081 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:29:10,081 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:29:10,082 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:29:10,082 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:29:10,082 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:29:10,083 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:29:10,083 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:29:10,278 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:29:10,284 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:29:10,286 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:29:10,287 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:29:10,287 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:29:10,288 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e456e6ce-0e11-4597-840a-baea105bb92b/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/blockchain_state/balance_receive_2.sol_1_no_adts_000.smt2
[2025-05-07 17:29:10,289 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:29:10,291 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:29:10,497 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e456e6ce-0e11-4597-840a-baea105bb92b/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/blockchain_state/balance_receive_2.sol_1_no_adts_000.smt2
[2025-05-07 17:29:10,500 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:29:10,501 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:29:10,501 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:29:10,501 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:29:10,501 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:29:10,503 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,530 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10 Unit
[2025-05-07 17:29:10,531 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:29:10,531 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:29:10,531 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:29:10,531 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:29:10,543 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,543 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,563 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,563 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,567 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,568 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,569 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,571 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,572 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,582 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:29:10,583 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:29:10,583 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:29:10,583 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:29:10,584 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (1/1) ...
[2025-05-07 17:29:10,585 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:29:10,594 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:29:10,602 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 17:29:10,604 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 17:29:10,612 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:29:10,612 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:29:10,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:29:10,612 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_4_0 given in one single declaration
[2025-05-07 17:29:10,612 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_4_0
[2025-05-07 17:29:10,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_4_0
[2025-05-07 17:29:10,612 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_59_0 given in one single declaration
[2025-05-07 17:29:10,612 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_59_0
[2025-05-07 17:29:10,612 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_59_0
[2025-05-07 17:29:10,612 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_59_0 given in one single declaration
[2025-05-07 17:29:10,613 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_59_0
[2025-05-07 17:29:10,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_59_0
[2025-05-07 17:29:10,613 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_18_C_59_0 given in one single declaration
[2025-05-07 17:29:10,613 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_18_C_59_0
[2025-05-07 17:29:10,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_18_C_59_0
[2025-05-07 17:29:10,613 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_15_C_59_0 given in one single declaration
[2025-05-07 17:29:10,613 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_15_C_59_0
[2025-05-07 17:29:10,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_15_C_59_0
[2025-05-07 17:29:10,613 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_17_C_59_0 given in one single declaration
[2025-05-07 17:29:10,613 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_17_C_59_0
[2025-05-07 17:29:10,613 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_17_C_59_0
[2025-05-07 17:29:10,614 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_16_C_59_0 given in one single declaration
[2025-05-07 17:29:10,614 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_16_C_59_0
[2025-05-07 17:29:10,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_16_C_59_0
[2025-05-07 17:29:10,614 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_constructor_16_59_0 given in one single declaration
[2025-05-07 17:29:10,614 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_constructor_16_59_0
[2025-05-07 17:29:10,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_constructor_16_59_0
[2025-05-07 17:29:10,614 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_14_return_constructor_16_59_0 given in one single declaration
[2025-05-07 17:29:10,614 INFO  L130     BoogieDeclarations]: Found specification of procedure block_14_return_constructor_16_59_0
[2025-05-07 17:29:10,614 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_14_return_constructor_16_59_0
[2025-05-07 17:29:10,614 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_13__15_59_0 given in one single declaration
[2025-05-07 17:29:10,615 INFO  L130     BoogieDeclarations]: Found specification of procedure block_13__15_59_0
[2025-05-07 17:29:10,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_13__15_59_0
[2025-05-07 17:29:10,615 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_constructor_16_59_0 given in one single declaration
[2025-05-07 17:29:10,615 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_constructor_16_59_0
[2025-05-07 17:29:10,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_constructor_16_59_0
[2025-05-07 17:29:10,615 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_5_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,615 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_5_function_f__58_59_0
[2025-05-07 17:29:10,615 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_5_function_f__58_59_0
[2025-05-07 17:29:10,615 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,615 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,616 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_return_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,616 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_return_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_return_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_f_57_59_0 given in one single declaration
[2025-05-07 17:29:10,616 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_f_57_59_0
[2025-05-07 17:29:10,616 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_f_57_59_0
[2025-05-07 17:29:10,616 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,616 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_function_f__58_59_0
[2025-05-07 17:29:10,616 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_function_f__58_59_0
[2025-05-07 17:29:10,617 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,617 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__58_59_0
[2025-05-07 17:29:10,617 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__58_59_0
[2025-05-07 17:29:10,617 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_f__58_59_0 given in one single declaration
[2025-05-07 17:29:10,617 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_f__58_59_0
[2025-05-07 17:29:10,617 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_f__58_59_0
[2025-05-07 17:29:10,617 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:29:10,617 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:29:10,617 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:29:10,743 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:29:10,744 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:29:10,942 INFO  L?                        ?]: Removed 198 outVars from TransFormulas that were not future-live.
[2025-05-07 17:29:10,942 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:29:10,949 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:29:10,950 INFO  L312             CfgBuilder]: Removed 9 assume(true) statements.
[2025-05-07 17:29:10,950 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:29:10 BoogieIcfgContainer
[2025-05-07 17:29:10,950 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:29:10,951 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:29:10,952 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:29:10,954 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:29:10,954 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:29:10" (1/3) ...
[2025-05-07 17:29:10,955 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f761b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:29:10, skipping insertion in model container
[2025-05-07 17:29:10,955 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:10" (2/3) ...
[2025-05-07 17:29:10,955 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f761b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:29:10, skipping insertion in model container
[2025-05-07 17:29:10,955 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:29:10" (3/3) ...
[2025-05-07 17:29:10,956 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:29:10,967 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:29:10,969 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 21 procedures, 83 locations, 123 edges, 21 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:29:10,998 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:29:11,007 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;@351c36df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:29:11,007 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:29:11,010 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 83 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 39 states have internal predecessors, (39), 26 states have call successors, (28), 20 states have call predecessors, (28), 20 states have return successors, (28), 23 states have call predecessors, (28), 26 states have call successors, (28)
[2025-05-07 17:29:11,017 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:29:11,017 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:11,018 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:11,018 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:11,021 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:11,022 INFO  L85        PathProgramCache]: Analyzing trace with hash 37889788, now seen corresponding path program 1 times
[2025-05-07 17:29:11,027 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:11,027 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101223335]
[2025-05-07 17:29:11,028 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:11,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:11,074 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:29:11,157 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:29:11,157 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:11,157 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:11,406 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 17:29:11,406 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:11,406 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101223335]
[2025-05-07 17:29:11,407 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101223335] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:11,407 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:11,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:29:11,410 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943533615]
[2025-05-07 17:29:11,411 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:11,414 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:29:11,414 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:11,451 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:29:11,451 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:29:11,454 INFO  L87              Difference]: Start difference. First operand  has 83 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 39 states have internal predecessors, (39), 26 states have call successors, (28), 20 states have call predecessors, (28), 20 states have return successors, (28), 23 states have call predecessors, (28), 26 states have call successors, (28) Second operand  has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)
[2025-05-07 17:29:11,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:11,502 INFO  L93              Difference]: Finished difference Result 83 states and 94 transitions.
[2025-05-07 17:29:11,504 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:29:11,505 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 66
[2025-05-07 17:29:11,506 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:11,511 INFO  L225             Difference]: With dead ends: 83
[2025-05-07 17:29:11,511 INFO  L226             Difference]: Without dead ends: 79
[2025-05-07 17:29:11,512 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 17:29:11,514 INFO  L437           NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:11,515 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 270 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:11,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2025-05-07 17:29:11,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79.
[2025-05-07 17:29:11,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 24 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (26), 22 states have call predecessors, (26), 24 states have call successors, (26)
[2025-05-07 17:29:11,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions.
[2025-05-07 17:29:11,543 INFO  L79                 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 66
[2025-05-07 17:29:11,544 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:11,544 INFO  L485      AbstractCegarLoop]: Abstraction has 79 states and 88 transitions.
[2025-05-07 17:29:11,545 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)
[2025-05-07 17:29:11,545 INFO  L278                IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions.
[2025-05-07 17:29:11,546 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:29:11,546 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:11,546 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:11,547 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:29:11,547 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:11,547 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:11,547 INFO  L85        PathProgramCache]: Analyzing trace with hash 1853413308, now seen corresponding path program 1 times
[2025-05-07 17:29:11,547 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:11,547 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456830516]
[2025-05-07 17:29:11,547 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:11,548 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:11,581 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:29:11,607 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:29:11,607 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:11,607 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:11,814 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 17:29:11,814 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:11,814 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456830516]
[2025-05-07 17:29:11,814 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456830516] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:11,814 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:11,815 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:29:11,815 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984217605]
[2025-05-07 17:29:11,815 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:11,816 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:29:11,816 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:11,816 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:29:11,817 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:29:11,817 INFO  L87              Difference]: Start difference. First operand 79 states and 88 transitions. Second operand  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 6 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18)
[2025-05-07 17:29:11,915 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:11,915 INFO  L93              Difference]: Finished difference Result 84 states and 94 transitions.
[2025-05-07 17:29:11,916 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:29:11,916 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 6 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 66
[2025-05-07 17:29:11,916 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:11,917 INFO  L225             Difference]: With dead ends: 84
[2025-05-07 17:29:11,917 INFO  L226             Difference]: Without dead ends: 84
[2025-05-07 17:29:11,918 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2025-05-07 17:29:11,918 INFO  L437           NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:11,919 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 556 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:29:11,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2025-05-07 17:29:11,926 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2025-05-07 17:29:11,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 38 states have internal predecessors, (38), 25 states have call successors, (27), 20 states have call predecessors, (27), 22 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29)
[2025-05-07 17:29:11,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions.
[2025-05-07 17:29:11,928 INFO  L79                 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 66
[2025-05-07 17:29:11,928 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:11,928 INFO  L485      AbstractCegarLoop]: Abstraction has 84 states and 94 transitions.
[2025-05-07 17:29:11,928 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 6 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18)
[2025-05-07 17:29:11,928 INFO  L278                IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions.
[2025-05-07 17:29:11,930 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:29:11,930 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:11,930 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:11,930 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:29:11,930 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:11,930 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:11,931 INFO  L85        PathProgramCache]: Analyzing trace with hash 441489186, now seen corresponding path program 1 times
[2025-05-07 17:29:11,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:11,931 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112851976]
[2025-05-07 17:29:11,931 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:11,931 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:11,964 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:29:11,999 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:29:11,999 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:11,999 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:13,269 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 17:29:13,270 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:13,270 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112851976]
[2025-05-07 17:29:13,270 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112851976] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:13,270 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:13,270 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21
[2025-05-07 17:29:13,270 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837635398]
[2025-05-07 17:29:13,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:13,271 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2025-05-07 17:29:13,271 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:13,271 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2025-05-07 17:29:13,271 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420
[2025-05-07 17:29:13,272 INFO  L87              Difference]: Start difference. First operand 84 states and 94 transitions. Second operand  has 21 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 10 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18)
[2025-05-07 17:29:13,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:13,732 INFO  L93              Difference]: Finished difference Result 99 states and 114 transitions.
[2025-05-07 17:29:13,733 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2025-05-07 17:29:13,733 INFO  L79                 Accepts]: Start accepts. Automaton has  has 21 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 10 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18) Word has length 66
[2025-05-07 17:29:13,733 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:13,734 INFO  L225             Difference]: With dead ends: 99
[2025-05-07 17:29:13,734 INFO  L226             Difference]: Without dead ends: 99
[2025-05-07 17:29:13,734 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552
[2025-05-07 17:29:13,735 INFO  L437           NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:13,735 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1364 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-05-07 17:29:13,735 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2025-05-07 17:29:13,741 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97.
[2025-05-07 17:29:13,741 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 41 states have (on average 1.048780487804878) internal successors, (43), 43 states have internal predecessors, (43), 28 states have call successors, (30), 20 states have call predecessors, (30), 27 states have return successors, (39), 33 states have call predecessors, (39), 28 states have call successors, (39)
[2025-05-07 17:29:13,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions.
[2025-05-07 17:29:13,742 INFO  L79                 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 66
[2025-05-07 17:29:13,742 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:13,742 INFO  L485      AbstractCegarLoop]: Abstraction has 97 states and 112 transitions.
[2025-05-07 17:29:13,743 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 14 states have (on average 2.142857142857143) internal successors, (30), 17 states have internal predecessors, (30), 10 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18)
[2025-05-07 17:29:13,743 INFO  L278                IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions.
[2025-05-07 17:29:13,743 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:29:13,744 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:13,744 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:13,744 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:29:13,744 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:13,744 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:13,744 INFO  L85        PathProgramCache]: Analyzing trace with hash -1780784764, now seen corresponding path program 1 times
[2025-05-07 17:29:13,744 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:13,744 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341185750]
[2025-05-07 17:29:13,744 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:13,744 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:13,776 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:29:13,786 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:29:13,787 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:13,787 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:13,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:29:13,859 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:13,859 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341185750]
[2025-05-07 17:29:13,859 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341185750] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:13,859 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:13,859 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:29:13,859 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625830582]
[2025-05-07 17:29:13,860 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:13,860 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:29:13,860 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:13,861 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:29:13,861 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:29:13,861 INFO  L87              Difference]: Start difference. First operand 97 states and 112 transitions. Second operand  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2025-05-07 17:29:13,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:13,895 INFO  L93              Difference]: Finished difference Result 96 states and 108 transitions.
[2025-05-07 17:29:13,895 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:29:13,895 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 66
[2025-05-07 17:29:13,896 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:13,897 INFO  L225             Difference]: With dead ends: 96
[2025-05-07 17:29:13,897 INFO  L226             Difference]: Without dead ends: 96
[2025-05-07 17:29:13,897 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 17:29:13,898 INFO  L437           NwaCegarLoop]: 91 mSDtfsCounter, 1 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 441 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 17:29:13,898 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 441 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:13,899 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2025-05-07 17:29:13,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91.
[2025-05-07 17:29:13,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 41 states have internal predecessors, (41), 26 states have call successors, (28), 20 states have call predecessors, (28), 25 states have return successors, (33), 29 states have call predecessors, (33), 26 states have call successors, (33)
[2025-05-07 17:29:13,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions.
[2025-05-07 17:29:13,904 INFO  L79                 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 66
[2025-05-07 17:29:13,905 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:13,905 INFO  L485      AbstractCegarLoop]: Abstraction has 91 states and 102 transitions.
[2025-05-07 17:29:13,905 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2025-05-07 17:29:13,905 INFO  L278                IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions.
[2025-05-07 17:29:13,906 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2025-05-07 17:29:13,906 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:13,906 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:13,906 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:29:13,906 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:13,906 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:13,907 INFO  L85        PathProgramCache]: Analyzing trace with hash 58871676, now seen corresponding path program 1 times
[2025-05-07 17:29:13,907 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:13,907 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895493666]
[2025-05-07 17:29:13,907 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:13,907 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:13,934 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes.
[2025-05-07 17:29:13,942 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements.
[2025-05-07 17:29:13,942 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:13,942 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:14,024 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 17:29:14,024 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:14,024 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895493666]
[2025-05-07 17:29:14,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895493666] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:14,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:14,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-05-07 17:29:14,025 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923757370]
[2025-05-07 17:29:14,025 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:14,025 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-05-07 17:29:14,025 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:14,026 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-05-07 17:29:14,026 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:29:14,026 INFO  L87              Difference]: Start difference. First operand 91 states and 102 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 17:29:14,042 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:14,042 INFO  L93              Difference]: Finished difference Result 91 states and 101 transitions.
[2025-05-07 17:29:14,043 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-05-07 17:29:14,043 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 17:29:14,043 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:14,044 INFO  L225             Difference]: With dead ends: 91
[2025-05-07 17:29:14,044 INFO  L226             Difference]: Without dead ends: 84
[2025-05-07 17:29:14,044 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 17:29:14,045 INFO  L437           NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:14,045 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 352 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:14,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2025-05-07 17:29:14,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2025-05-07 17:29:14,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 37 states have (on average 1.027027027027027) internal successors, (38), 38 states have internal predecessors, (38), 23 states have call successors, (25), 20 states have call predecessors, (25), 23 states have return successors, (28), 25 states have call predecessors, (28), 23 states have call successors, (28)
[2025-05-07 17:29:14,049 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions.
[2025-05-07 17:29:14,050 INFO  L79                 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 66
[2025-05-07 17:29:14,050 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:14,050 INFO  L485      AbstractCegarLoop]: Abstraction has 84 states and 91 transitions.
[2025-05-07 17:29:14,050 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 17:29:14,050 INFO  L278                IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions.
[2025-05-07 17:29:14,051 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2025-05-07 17:29:14,051 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:14,051 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-05-07 17:29:14,051 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-05-07 17:29:14,051 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:14,051 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:14,051 INFO  L85        PathProgramCache]: Analyzing trace with hash 1274356840, now seen corresponding path program 1 times
[2025-05-07 17:29:14,051 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:14,051 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695681506]
[2025-05-07 17:29:14,051 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:14,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:14,084 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes.
[2025-05-07 17:29:14,095 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements.
[2025-05-07 17:29:14,095 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:14,095 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:14,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2025-05-07 17:29:14,505 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:14,505 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695681506]
[2025-05-07 17:29:14,506 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695681506] provided 0 perfect and 1 imperfect interpolant sequences
[2025-05-07 17:29:14,506 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500225388]
[2025-05-07 17:29:14,506 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:14,506 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-05-07 17:29:14,508 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:29:14,510 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-05-07 17:29:14,511 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-05-07 17:29:14,708 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes.
[2025-05-07 17:29:14,850 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements.
[2025-05-07 17:29:14,850 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:14,850 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:14,856 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 17 conjuncts are in the unsatisfiable core
[2025-05-07 17:29:14,863 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-05-07 17:29:14,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2025-05-07 17:29:14,973 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-05-07 17:29:16,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2025-05-07 17:29:16,174 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500225388] provided 0 perfect and 2 imperfect interpolant sequences
[2025-05-07 17:29:16,174 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-05-07 17:29:16,174 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16
[2025-05-07 17:29:16,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204213910]
[2025-05-07 17:29:16,174 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-05-07 17:29:16,174 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-05-07 17:29:16,174 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:16,175 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-05-07 17:29:16,175 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240
[2025-05-07 17:29:16,175 INFO  L87              Difference]: Start difference. First operand 84 states and 91 transitions. Second operand  has 16 states, 11 states have (on average 3.909090909090909) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29)
[2025-05-07 17:29:16,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:16,302 INFO  L93              Difference]: Finished difference Result 91 states and 99 transitions.
[2025-05-07 17:29:16,302 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2025-05-07 17:29:16,303 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 11 states have (on average 3.909090909090909) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29) Word has length 91
[2025-05-07 17:29:16,303 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:16,303 INFO  L225             Difference]: With dead ends: 91
[2025-05-07 17:29:16,303 INFO  L226             Difference]: Without dead ends: 91
[2025-05-07 17:29:16,304 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2025-05-07 17:29:16,304 INFO  L437           NwaCegarLoop]: 83 mSDtfsCounter, 5 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:16,304 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1110 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:29:16,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2025-05-07 17:29:16,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89.
[2025-05-07 17:29:16,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 89 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 24 states have call successors, (26), 20 states have call predecessors, (26), 25 states have return successors, (31), 28 states have call predecessors, (31), 24 states have call successors, (31)
[2025-05-07 17:29:16,308 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions.
[2025-05-07 17:29:16,308 INFO  L79                 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 91
[2025-05-07 17:29:16,309 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:16,309 INFO  L485      AbstractCegarLoop]: Abstraction has 89 states and 97 transitions.
[2025-05-07 17:29:16,309 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 11 states have (on average 3.909090909090909) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (29), 12 states have call predecessors, (29), 11 states have call successors, (29)
[2025-05-07 17:29:16,309 INFO  L278                IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions.
[2025-05-07 17:29:16,309 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2025-05-07 17:29:16,309 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:16,310 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-05-07 17:29:16,315 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-05-07 17:29:16,510 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2025-05-07 17:29:16,511 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:16,512 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:16,512 INFO  L85        PathProgramCache]: Analyzing trace with hash 1452668610, now seen corresponding path program 1 times
[2025-05-07 17:29:16,513 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:16,513 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798573370]
[2025-05-07 17:29:16,513 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:16,513 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:16,584 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes.
[2025-05-07 17:29:16,594 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements.
[2025-05-07 17:29:16,594 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:16,594 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:16,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2025-05-07 17:29:16,686 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:16,686 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798573370]
[2025-05-07 17:29:16,686 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798573370] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:16,686 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:16,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:29:16,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386319448]
[2025-05-07 17:29:16,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:16,687 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:29:16,687 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:16,687 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:29:16,687 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:29:16,688 INFO  L87              Difference]: Start difference. First operand 89 states and 97 transitions. Second operand  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (22), 1 states have call predecessors, (22), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24)
[2025-05-07 17:29:16,719 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:16,719 INFO  L93              Difference]: Finished difference Result 89 states and 96 transitions.
[2025-05-07 17:29:16,720 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:29:16,720 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (22), 1 states have call predecessors, (22), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 91
[2025-05-07 17:29:16,720 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:16,721 INFO  L225             Difference]: With dead ends: 89
[2025-05-07 17:29:16,721 INFO  L226             Difference]: Without dead ends: 89
[2025-05-07 17:29:16,721 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 17:29:16,722 INFO  L437           NwaCegarLoop]: 82 mSDtfsCounter, 1 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:16,722 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 396 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:16,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2025-05-07 17:29:16,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89.
[2025-05-07 17:29:16,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 89 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 24 states have call successors, (26), 20 states have call predecessors, (26), 25 states have return successors, (30), 28 states have call predecessors, (30), 24 states have call successors, (30)
[2025-05-07 17:29:16,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions.
[2025-05-07 17:29:16,726 INFO  L79                 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 91
[2025-05-07 17:29:16,726 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:16,726 INFO  L485      AbstractCegarLoop]: Abstraction has 89 states and 96 transitions.
[2025-05-07 17:29:16,726 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (22), 1 states have call predecessors, (22), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24)
[2025-05-07 17:29:16,726 INFO  L278                IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions.
[2025-05-07 17:29:16,727 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2025-05-07 17:29:16,727 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:16,727 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-05-07 17:29:16,727 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2025-05-07 17:29:16,727 INFO  L403      AbstractCegarLoop]: === Iteration 8 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:16,728 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:16,728 INFO  L85        PathProgramCache]: Analyzing trace with hash 1770459040, now seen corresponding path program 1 times
[2025-05-07 17:29:16,728 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:16,728 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489381984]
[2025-05-07 17:29:16,728 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:16,728 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:16,758 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes.
[2025-05-07 17:29:16,768 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements.
[2025-05-07 17:29:16,768 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:16,768 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:16,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2025-05-07 17:29:16,853 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:16,854 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489381984]
[2025-05-07 17:29:16,854 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489381984] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:16,854 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:16,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:29:16,854 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117269374]
[2025-05-07 17:29:16,854 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:16,854 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:29:16,854 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:16,855 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:29:16,855 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:29:16,855 INFO  L87              Difference]: Start difference. First operand 89 states and 96 transitions. Second operand  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (23), 1 states have call predecessors, (23), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24)
[2025-05-07 17:29:16,880 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:16,881 INFO  L93              Difference]: Finished difference Result 81 states and 87 transitions.
[2025-05-07 17:29:16,881 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:29:16,881 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (23), 1 states have call predecessors, (23), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 91
[2025-05-07 17:29:16,882 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:16,882 INFO  L225             Difference]: With dead ends: 81
[2025-05-07 17:29:16,882 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:29:16,882 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 17:29:16,882 INFO  L437           NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:16,882 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 376 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:16,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:29:16,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:29:16,883 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 17:29:16,883 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:29:16,883 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91
[2025-05-07 17:29:16,883 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:16,883 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:29:16,883 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (23), 1 states have call predecessors, (23), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24)
[2025-05-07 17:29:16,883 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:29:16,883 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:29:16,885 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:29:16,885 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2025-05-07 17:29:16,888 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:16,889 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:29:16,892 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:29:16 BoogieIcfgContainer
[2025-05-07 17:29:16,892 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:29:16,892 INFO  L158              Benchmark]: Toolchain (without parser) took 6391.72ms. Allocated memory was 234.9MB in the beginning and 285.2MB in the end (delta: 50.3MB). Free memory was 148.3MB in the beginning and 134.7MB in the end (delta: 13.6MB). Peak memory consumption was 82.6MB. Max. memory is 33.6GB.
[2025-05-07 17:29:16,892 INFO  L158              Benchmark]: SmtParser took 0.17ms. Allocated memory is still 234.9MB. Free memory is still 171.7MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:16,893 INFO  L158              Benchmark]: ChcToBoogie took 29.72ms. Allocated memory is still 234.9MB. Free memory was 148.3MB in the beginning and 145.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:16,893 INFO  L158              Benchmark]: Boogie Preprocessor took 51.24ms. Allocated memory is still 234.9MB. Free memory was 145.4MB in the beginning and 142.3MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:16,893 INFO  L158              Benchmark]: RCFGBuilder took 367.35ms. Allocated memory was 234.9MB in the beginning and 302.0MB in the end (delta: 67.1MB). Free memory was 142.2MB in the beginning and 248.8MB in the end (delta: -106.6MB). Peak memory consumption was 42.0MB. Max. memory is 33.6GB.
[2025-05-07 17:29:16,893 INFO  L158              Benchmark]: TraceAbstraction took 5940.26ms. Allocated memory was 302.0MB in the beginning and 285.2MB in the end (delta: -16.8MB). Free memory was 248.0MB in the beginning and 134.7MB in the end (delta: 113.3MB). Peak memory consumption was 107.7MB. Max. memory is 33.6GB.
[2025-05-07 17:29:16,894 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.17ms. Allocated memory is still 234.9MB. Free memory is still 171.7MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 29.72ms. Allocated memory is still 234.9MB. Free memory was 148.3MB in the beginning and 145.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 51.24ms. Allocated memory is still 234.9MB. Free memory was 145.4MB in the beginning and 142.3MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 367.35ms. Allocated memory was 234.9MB in the beginning and 302.0MB in the end (delta: 67.1MB). Free memory was 142.2MB in the beginning and 248.8MB in the end (delta: -106.6MB). Peak memory consumption was 42.0MB. Max. memory is 33.6GB.
 * TraceAbstraction took 5940.26ms. Allocated memory was 302.0MB in the beginning and 285.2MB in the end (delta: -16.8MB). Free memory was 248.0MB in the beginning and 134.7MB in the end (delta: 113.3MB). Peak memory consumption was 107.7MB. 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 21 procedures, 83 locations, 123 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 4865 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4184 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 641 IncrementalHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 681 mSDtfsCounter, 641 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=3, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 694 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 775 ConstructedInterpolants, 0 QuantifiedInterpolants, 1181 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1320 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 72/99 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 17:29:16,903 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
