./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_1_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:28:06,375 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:28:06,425 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a881b-07be-4458-88a6-fcc48f126f63/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:28:06,429 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:28:06,429 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:28:06,447 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:28:06,447 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:28:06,447 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:28:06,448 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:28:06,448 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:28:06,448 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:28:06,448 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:28:06,448 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:28:06,448 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:28:06,448 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:28:06,448 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:06,449 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:28:06,449 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:28:06,450 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:28:06,450 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:28:06,649 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:28:06,657 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:28:06,659 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:28:06,660 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:28:06,660 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:28:06,661 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a881b-07be-4458-88a6-fcc48f126f63/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_1_no_adts_000.smt2
[2025-05-07 17:28:06,662 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:28:06,664 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:28:06,911 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_762a881b-07be-4458-88a6-fcc48f126f63/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/operators/unary_sub.sol_1_no_adts_000.smt2
[2025-05-07 17:28:06,914 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:28:06,914 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:28:06,915 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:28:06,915 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:28:06,915 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:28:06,917 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,953 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06 Unit
[2025-05-07 17:28:06,953 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:28:06,954 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:28:06,954 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:28:06,954 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:28:06,965 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,965 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,991 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,991 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,997 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:06,998 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:07,000 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:07,002 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:07,004 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:07,019 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:28:07,020 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:28:07,020 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:28:07,020 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:28:07,021 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (1/1) ...
[2025-05-07 17:28:07,023 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:07,031 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:28:07,040 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2025-05-07 17:28:07,042 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-05-07 17:28:07,053 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:28:07,053 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:28:07,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:28:07,053 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_7_0 given in one single declaration
[2025-05-07 17:28:07,053 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_7_0
[2025-05-07 17:28:07,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_7_0
[2025-05-07 17:28:07,053 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,053 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,054 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,054 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,054 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_f__42_43_0
[2025-05-07 17:28:07,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_41_43_0 given in one single declaration
[2025-05-07 17:28:07,054 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_41_43_0
[2025-05-07 17:28:07,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_41_43_0
[2025-05-07 17:28:07,055 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,055 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,055 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,055 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__42_43_0
[2025-05-07 17:28:07,055 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,055 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_function_f__42_43_0
[2025-05-07 17:28:07,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_function_f__42_43_0
[2025-05-07 17:28:07,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__42_43_0 given in one single declaration
[2025-05-07 17:28:07,056 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__42_43_0
[2025-05-07 17:28:07,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__42_43_0
[2025-05-07 17:28:07,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_43_0 given in one single declaration
[2025-05-07 17:28:07,056 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_43_0
[2025-05-07 17:28:07,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_43_0
[2025-05-07 17:28:07,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_43_0 given in one single declaration
[2025-05-07 17:28:07,056 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_43_0
[2025-05-07 17:28:07,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_43_0
[2025-05-07 17:28:07,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_16_C_43_0 given in one single declaration
[2025-05-07 17:28:07,056 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_16_C_43_0
[2025-05-07 17:28:07,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_16_C_43_0
[2025-05-07 17:28:07,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_13_C_43_0 given in one single declaration
[2025-05-07 17:28:07,057 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_13_C_43_0
[2025-05-07 17:28:07,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_13_C_43_0
[2025-05-07 17:28:07,057 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_15_C_43_0 given in one single declaration
[2025-05-07 17:28:07,057 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_15_C_43_0
[2025-05-07 17:28:07,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_15_C_43_0
[2025-05-07 17:28:07,057 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_14_C_43_0 given in one single declaration
[2025-05-07 17:28:07,057 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_14_C_43_0
[2025-05-07 17:28:07,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_14_C_43_0
[2025-05-07 17:28:07,057 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:28:07,057 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:28:07,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:28:07,167 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:28:07,169 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:28:07,372 INFO  L?                        ?]: Removed 163 outVars from TransFormulas that were not future-live.
[2025-05-07 17:28:07,373 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:28:07,381 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:28:07,381 INFO  L312             CfgBuilder]: Removed 10 assume(true) statements.
[2025-05-07 17:28:07,381 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:07 BoogieIcfgContainer
[2025-05-07 17:28:07,381 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:28:07,383 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:28:07,384 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:28:07,386 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:28:07,386 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:06" (1/3) ...
[2025-05-07 17:28:07,386 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b929464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:28:07, skipping insertion in model container
[2025-05-07 17:28:07,387 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:06" (2/3) ...
[2025-05-07 17:28:07,387 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b929464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:28:07, skipping insertion in model container
[2025-05-07 17:28:07,387 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:07" (3/3) ...
[2025-05-07 17:28:07,388 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:28:07,398 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:28:07,400 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 19 procedures, 74 locations, 113 edges, 19 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:28:07,433 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:28:07,442 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;@7ed64e96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:28:07,442 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:28:07,445 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 74 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 22 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 20 states have call predecessors, (26), 22 states have call successors, (26)
[2025-05-07 17:28:07,452 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:07,453 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:07,453 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:28:07,453 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:07,457 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:07,457 INFO  L85        PathProgramCache]: Analyzing trace with hash 1677080663, now seen corresponding path program 1 times
[2025-05-07 17:28:07,462 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:07,462 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190513273]
[2025-05-07 17:28:07,463 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:07,463 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:07,506 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:07,558 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:07,558 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:07,558 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:07,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:07,627 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:07,627 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190513273]
[2025-05-07 17:28:07,628 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190513273] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:07,628 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:07,630 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2025-05-07 17:28:07,631 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980879980]
[2025-05-07 17:28:07,631 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:07,634 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-05-07 17:28:07,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:07,650 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-05-07 17:28:07,651 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-05-07 17:28:07,652 INFO  L87              Difference]: Start difference. First operand  has 74 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 22 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 20 states have call predecessors, (26), 22 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2025-05-07 17:28:07,668 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:07,668 INFO  L93              Difference]: Finished difference Result 63 states and 70 transitions.
[2025-05-07 17:28:07,668 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-05-07 17:28:07,669 INFO  L79                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 51
[2025-05-07 17:28:07,669 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:07,674 INFO  L225             Difference]: With dead ends: 63
[2025-05-07 17:28:07,674 INFO  L226             Difference]: Without dead ends: 60
[2025-05-07 17:28:07,675 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-05-07 17:28:07,677 INFO  L437           NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:07,677 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:07,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2025-05-07 17:28:07,715 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2025-05-07 17:28:07,716 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 19 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 17 states have call predecessors, (20), 19 states have call successors, (20)
[2025-05-07 17:28:07,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions.
[2025-05-07 17:28:07,720 INFO  L79                 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 51
[2025-05-07 17:28:07,721 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:07,721 INFO  L485      AbstractCegarLoop]: Abstraction has 60 states and 67 transitions.
[2025-05-07 17:28:07,722 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2025-05-07 17:28:07,722 INFO  L278                IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions.
[2025-05-07 17:28:07,723 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:07,723 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:07,723 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:28:07,724 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:28:07,724 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:07,724 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:07,725 INFO  L85        PathProgramCache]: Analyzing trace with hash -175062329, now seen corresponding path program 1 times
[2025-05-07 17:28:07,725 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:07,725 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095860958]
[2025-05-07 17:28:07,725 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:07,725 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:07,760 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:07,767 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:07,767 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:07,767 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:07,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:07,878 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:07,879 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095860958]
[2025-05-07 17:28:07,879 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095860958] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:07,879 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:07,879 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:28:07,879 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256498868]
[2025-05-07 17:28:07,879 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:07,880 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:28:07,880 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:07,880 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:28:07,881 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:28:07,881 INFO  L87              Difference]: Start difference. First operand 60 states and 67 transitions. Second operand  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:07,894 INFO  L93              Difference]: Finished difference Result 64 states and 71 transitions.
[2025-05-07 17:28:07,894 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:28:07,894 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:28:07,894 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:07,895 INFO  L225             Difference]: With dead ends: 64
[2025-05-07 17:28:07,895 INFO  L226             Difference]: Without dead ends: 60
[2025-05-07 17:28:07,895 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:28:07,896 INFO  L437           NwaCegarLoop]: 67 mSDtfsCounter, 1 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:07,896 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 194 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:07,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2025-05-07 17:28:07,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58.
[2025-05-07 17:28:07,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 17 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18)
[2025-05-07 17:28:07,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions.
[2025-05-07 17:28:07,902 INFO  L79                 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 51
[2025-05-07 17:28:07,902 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:07,902 INFO  L485      AbstractCegarLoop]: Abstraction has 58 states and 62 transitions.
[2025-05-07 17:28:07,902 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:07,902 INFO  L278                IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions.
[2025-05-07 17:28:07,903 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:07,903 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:07,903 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:28:07,903 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:28:07,903 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:07,903 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:07,903 INFO  L85        PathProgramCache]: Analyzing trace with hash -543674529, now seen corresponding path program 1 times
[2025-05-07 17:28:07,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:07,904 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900782278]
[2025-05-07 17:28:07,904 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:07,904 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:07,929 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:07,957 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:07,957 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:07,957 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:08,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:08,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:08,154 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900782278]
[2025-05-07 17:28:08,154 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900782278] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:08,154 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:08,154 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:28:08,154 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642893176]
[2025-05-07 17:28:08,154 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:08,155 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:28:08,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:08,156 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:28:08,156 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:28:08,156 INFO  L87              Difference]: Start difference. First operand 58 states and 62 transitions. Second operand  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:28:08,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:08,225 INFO  L93              Difference]: Finished difference Result 63 states and 68 transitions.
[2025-05-07 17:28:08,225 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:28:08,226 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 51
[2025-05-07 17:28:08,226 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:08,226 INFO  L225             Difference]: With dead ends: 63
[2025-05-07 17:28:08,226 INFO  L226             Difference]: Without dead ends: 63
[2025-05-07 17:28:08,227 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:28:08,227 INFO  L437           NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:08,227 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 328 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:28:08,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2025-05-07 17:28:08,231 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63.
[2025-05-07 17:28:08,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 63 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 18 states have call successors, (19), 15 states have call predecessors, (19), 17 states have return successors, (21), 19 states have call predecessors, (21), 18 states have call successors, (21)
[2025-05-07 17:28:08,232 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions.
[2025-05-07 17:28:08,232 INFO  L79                 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 51
[2025-05-07 17:28:08,232 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:08,232 INFO  L485      AbstractCegarLoop]: Abstraction has 63 states and 68 transitions.
[2025-05-07 17:28:08,232 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 5 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2025-05-07 17:28:08,233 INFO  L278                IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions.
[2025-05-07 17:28:08,233 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2025-05-07 17:28:08,233 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:08,233 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:28:08,233 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:28:08,234 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:08,234 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:08,234 INFO  L85        PathProgramCache]: Analyzing trace with hash -1680416061, now seen corresponding path program 1 times
[2025-05-07 17:28:08,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:08,234 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698906982]
[2025-05-07 17:28:08,234 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:08,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:08,255 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes.
[2025-05-07 17:28:08,266 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements.
[2025-05-07 17:28:08,266 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:08,267 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:08,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:08,356 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:08,356 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698906982]
[2025-05-07 17:28:08,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698906982] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:08,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:08,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:28:08,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056447916]
[2025-05-07 17:28:08,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:08,356 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:28:08,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:08,357 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:28:08,357 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:28:08,357 INFO  L87              Difference]: Start difference. First operand 63 states and 68 transitions. Second operand  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:08,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:08,392 INFO  L93              Difference]: Finished difference Result 57 states and 62 transitions.
[2025-05-07 17:28:08,393 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:28:08,393 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 51
[2025-05-07 17:28:08,393 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:08,394 INFO  L225             Difference]: With dead ends: 57
[2025-05-07 17:28:08,394 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:28:08,394 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:28:08,394 INFO  L437           NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:08,394 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:08,395 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:28:08,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:28:08,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-05-07 17:28:08,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:28:08,395 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2025-05-07 17:28:08,395 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:08,395 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:28:08,396 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14)
[2025-05-07 17:28:08,396 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:28:08,396 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:28:08,398 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:28:08,398 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:28:08,401 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:28:08,402 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:28:08,405 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:28:08 BoogieIcfgContainer
[2025-05-07 17:28:08,405 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:28:08,405 INFO  L158              Benchmark]: Toolchain (without parser) took 1490.94ms. Allocated memory is still 234.9MB. Free memory was 150.4MB in the beginning and 183.1MB in the end (delta: -32.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:08,406 INFO  L158              Benchmark]: SmtParser took 0.19ms. Allocated memory is still 234.9MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:08,406 INFO  L158              Benchmark]: ChcToBoogie took 38.36ms. Allocated memory is still 234.9MB. Free memory was 150.2MB in the beginning and 147.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:08,406 INFO  L158              Benchmark]: Boogie Preprocessor took 65.21ms. Allocated memory is still 234.9MB. Free memory was 147.5MB in the beginning and 144.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:08,406 INFO  L158              Benchmark]: RCFGBuilder took 361.85ms. Allocated memory is still 234.9MB. Free memory was 144.4MB in the beginning and 188.8MB in the end (delta: -44.3MB). Peak memory consumption was 41.6MB. Max. memory is 33.6GB.
[2025-05-07 17:28:08,406 INFO  L158              Benchmark]: TraceAbstraction took 1021.40ms. Allocated memory is still 234.9MB. Free memory was 188.2MB in the beginning and 183.1MB in the end (delta: 5.1MB). Peak memory consumption was 2.2MB. Max. memory is 33.6GB.
[2025-05-07 17:28:08,407 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.19ms. Allocated memory is still 234.9MB. Free memory is still 172.8MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 38.36ms. Allocated memory is still 234.9MB. Free memory was 150.2MB in the beginning and 147.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 65.21ms. Allocated memory is still 234.9MB. Free memory was 147.5MB in the beginning and 144.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 361.85ms. Allocated memory is still 234.9MB. Free memory was 144.4MB in the beginning and 188.8MB in the end (delta: -44.3MB). Peak memory consumption was 41.6MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1021.40ms. Allocated memory is still 234.9MB. Free memory was 188.2MB in the beginning and 183.1MB in the end (delta: 5.1MB). Peak memory consumption was 2.2MB. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 19 procedures, 74 locations, 113 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 854 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 606 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 248 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-05-07 17:28:08,417 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
