./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-206.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:13,114 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:13,196 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d678d137-e198-4107-b293-7e56bb3bc893/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:13,202 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:13,202 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:13,246 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:13,246 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:13,247 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:13,247 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:13,247 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:13,248 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:13,248 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:13,248 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:13,248 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:13,248 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:13,249 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:13,249 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:13,249 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:13,249 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:13,249 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:13,249 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:13,249 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:13,250 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:13,250 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:13,250 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:13,251 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:13,252 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:13,629 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:13,641 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:13,644 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:13,647 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:13,647 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:13,650 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d678d137-e198-4107-b293-7e56bb3bc893/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-206.smt2
[2025-04-28 21:21:13,651 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:13,655 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:14,219 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d678d137-e198-4107-b293-7e56bb3bc893/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-206.smt2
[2025-04-28 21:21:14,222 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:14,224 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:14,225 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:14,225 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:14,226 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:14,233 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,302 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14 Unit
[2025-04-28 21:21:14,304 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:14,306 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:14,307 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:14,307 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:14,326 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,327 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,367 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,367 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,376 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,378 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,381 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,385 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,387 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,410 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:14,411 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:14,412 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:14,412 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:14,413 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (1/1) ...
[2025-04-28 21:21:14,418 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:14,444 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:14,463 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)
[2025-04-28 21:21:14,467 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-04-28 21:21:14,485 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:14,485 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:14,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:14,485 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_4_0 given in one single declaration
[2025-04-28 21:21:14,485 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_4_0
[2025-04-28 21:21:14,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_4_0
[2025-04-28 21:21:14,485 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_c_54_0 given in one single declaration
[2025-04-28 21:21:14,486 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_c_54_0
[2025-04-28 21:21:14,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_c_54_0
[2025-04-28 21:21:14,486 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_c_54_0 given in one single declaration
[2025-04-28 21:21:14,486 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_c_54_0
[2025-04-28 21:21:14,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_c_54_0
[2025-04-28 21:21:14,486 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_19_c_54_0 given in one single declaration
[2025-04-28 21:21:14,486 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_19_c_54_0
[2025-04-28 21:21:14,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_19_c_54_0
[2025-04-28 21:21:14,486 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_21_c_54_0 given in one single declaration
[2025-04-28 21:21:14,487 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_21_c_54_0
[2025-04-28 21:21:14,487 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_21_c_54_0
[2025-04-28 21:21:14,487 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_20_c_54_0 given in one single declaration
[2025-04-28 21:21:14,490 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_20_c_54_0
[2025-04-28 21:21:14,490 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_20_c_54_0
[2025-04-28 21:21:14,490 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_22_c_54_0 given in one single declaration
[2025-04-28 21:21:14,490 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_22_c_54_0
[2025-04-28 21:21:14,490 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_22_c_54_0
[2025-04-28 21:21:14,490 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_5_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,490 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_5_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_5_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_18_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,491 INFO  L130     BoogieDeclarations]: Found specification of procedure block_18_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_18_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,491 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,491 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_g__53_54_0
[2025-04-28 21:21:14,491 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_g__53_54_0
[2025-04-28 21:21:14,492 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_g_52_54_0 given in one single declaration
[2025-04-28 21:21:14,492 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_g_52_54_0
[2025-04-28 21:21:14,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_g_52_54_0
[2025-04-28 21:21:14,492 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,492 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_g__53_54_0
[2025-04-28 21:21:14,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_g__53_54_0
[2025-04-28 21:21:14,492 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_13_function_f__16_54_0 given in one single declaration
[2025-04-28 21:21:14,492 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_13_function_f__16_54_0
[2025-04-28 21:21:14,492 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_13_function_f__16_54_0
[2025-04-28 21:21:14,492 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__16_54_0 given in one single declaration
[2025-04-28 21:21:14,493 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__16_54_0
[2025-04-28 21:21:14,493 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__16_54_0
[2025-04-28 21:21:14,493 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_return_function_f__16_54_0 given in one single declaration
[2025-04-28 21:21:14,493 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_return_function_f__16_54_0
[2025-04-28 21:21:14,493 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_return_function_f__16_54_0
[2025-04-28 21:21:14,493 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_f_15_54_0 given in one single declaration
[2025-04-28 21:21:14,493 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_f_15_54_0
[2025-04-28 21:21:14,493 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_f_15_54_0
[2025-04-28 21:21:14,493 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_function_f__16_54_0 given in one single declaration
[2025-04-28 21:21:14,493 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_function_f__16_54_0
[2025-04-28 21:21:14,494 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_function_f__16_54_0
[2025-04-28 21:21:14,494 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_14_function_f__16_54_0 given in one single declaration
[2025-04-28 21:21:14,494 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_14_function_f__16_54_0
[2025-04-28 21:21:14,494 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_14_function_f__16_54_0
[2025-04-28 21:21:14,494 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_15_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,494 INFO  L130     BoogieDeclarations]: Found specification of procedure block_15_function_g__53_54_0
[2025-04-28 21:21:14,494 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_15_function_g__53_54_0
[2025-04-28 21:21:14,494 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_return_function_g__53_54_0 given in one single declaration
[2025-04-28 21:21:14,495 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_return_function_g__53_54_0
[2025-04-28 21:21:14,495 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_return_function_g__53_54_0
[2025-04-28 21:21:14,495 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:14,495 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:14,495 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:14,841 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:14,846 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:15,382 INFO  L?                        ?]: Removed 208 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:15,383 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:15,398 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:15,398 INFO  L312             CfgBuilder]: Removed 12 assume(true) statements.
[2025-04-28 21:21:15,399 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:15 BoogieIcfgContainer
[2025-04-28 21:21:15,399 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:15,401 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:15,401 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:15,408 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:15,408 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:14" (1/3) ...
[2025-04-28 21:21:15,412 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b4e77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:15, skipping insertion in model container
[2025-04-28 21:21:15,413 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:14" (2/3) ...
[2025-04-28 21:21:15,413 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b4e77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:15, skipping insertion in model container
[2025-04-28 21:21:15,413 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:15" (3/3) ...
[2025-04-28 21:21:15,414 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:15,433 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:15,437 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 23 procedures, 96 locations, 155 edges, 23 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:15,500 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:15,514 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;@4f9bfb44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:15,514 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:15,519 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 96 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 36 states have call successors, (38), 22 states have call predecessors, (38), 22 states have return successors, (38), 32 states have call predecessors, (38), 36 states have call successors, (38)
[2025-04-28 21:21:15,536 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-04-28 21:21:15,538 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:15,539 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]
[2025-04-28 21:21:15,539 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:15,544 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:15,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 1164741188, now seen corresponding path program 1 times
[2025-04-28 21:21:15,553 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:15,553 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916961880]
[2025-04-28 21:21:15,554 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:15,554 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:15,711 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-04-28 21:21:15,893 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-04-28 21:21:15,894 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:15,897 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:16,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:16,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:16,659 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916961880]
[2025-04-28 21:21:16,660 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916961880] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:16,660 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:16,663 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-04-28 21:21:16,666 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099789846]
[2025-04-28 21:21:16,667 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:16,677 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-04-28 21:21:16,678 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:16,752 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-04-28 21:21:16,759 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-04-28 21:21:16,763 INFO  L87              Difference]: Start difference. First operand  has 96 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 36 states have call successors, (38), 22 states have call predecessors, (38), 22 states have return successors, (38), 32 states have call predecessors, (38), 36 states have call successors, (38) Second operand  has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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)
[2025-04-28 21:21:16,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:16,948 INFO  L93              Difference]: Finished difference Result 98 states and 119 transitions.
[2025-04-28 21:21:16,950 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-04-28 21:21:16,952 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 65
[2025-04-28 21:21:16,954 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:16,965 INFO  L225             Difference]: With dead ends: 98
[2025-04-28 21:21:16,965 INFO  L226             Difference]: Without dead ends: 94
[2025-04-28 21:21:16,969 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-04-28 21:21:16,974 INFO  L437           NwaCegarLoop]: 113 mSDtfsCounter, 1 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:16,978 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 439 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:16,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2025-04-28 21:21:17,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92.
[2025-04-28 21:21:17,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 38 states have internal predecessors, (38), 34 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 34 states have call successors, (36)
[2025-04-28 21:21:17,052 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions.
[2025-04-28 21:21:17,053 INFO  L79                 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 65
[2025-04-28 21:21:17,055 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:17,055 INFO  L485      AbstractCegarLoop]: Abstraction has 92 states and 110 transitions.
[2025-04-28 21:21:17,056 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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)
[2025-04-28 21:21:17,056 INFO  L278                IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions.
[2025-04-28 21:21:17,061 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-04-28 21:21:17,063 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:17,063 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]
[2025-04-28 21:21:17,063 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:17,064 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:17,065 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:17,065 INFO  L85        PathProgramCache]: Analyzing trace with hash -2042018616, now seen corresponding path program 1 times
[2025-04-28 21:21:17,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:17,066 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128450120]
[2025-04-28 21:21:17,066 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:17,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:17,137 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-04-28 21:21:17,176 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-04-28 21:21:17,177 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:17,177 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:17,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:17,444 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:17,444 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128450120]
[2025-04-28 21:21:17,444 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128450120] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:17,444 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:17,444 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-04-28 21:21:17,445 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562226607]
[2025-04-28 21:21:17,445 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:17,446 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-04-28 21:21:17,446 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:17,447 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-04-28 21:21:17,447 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:17,447 INFO  L87              Difference]: Start difference. First operand 92 states and 110 transitions. Second operand  has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18)
[2025-04-28 21:21:17,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:17,648 INFO  L93              Difference]: Finished difference Result 94 states and 111 transitions.
[2025-04-28 21:21:17,648 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-04-28 21:21:17,649 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) Word has length 65
[2025-04-28 21:21:17,649 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:17,651 INFO  L225             Difference]: With dead ends: 94
[2025-04-28 21:21:17,652 INFO  L226             Difference]: Without dead ends: 92
[2025-04-28 21:21:17,653 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:17,654 INFO  L437           NwaCegarLoop]: 100 mSDtfsCounter, 1 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:17,656 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 579 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:17,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2025-04-28 21:21:17,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90.
[2025-04-28 21:21:17,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 32 states have call successors, (34), 22 states have call predecessors, (34), 22 states have return successors, (34), 30 states have call predecessors, (34), 32 states have call successors, (34)
[2025-04-28 21:21:17,674 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions.
[2025-04-28 21:21:17,674 INFO  L79                 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 65
[2025-04-28 21:21:17,675 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:17,675 INFO  L485      AbstractCegarLoop]: Abstraction has 90 states and 105 transitions.
[2025-04-28 21:21:17,676 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18)
[2025-04-28 21:21:17,676 INFO  L278                IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions.
[2025-04-28 21:21:17,681 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-04-28 21:21:17,681 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:17,682 INFO  L218           NwaCegarLoop]: trace histogram [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]
[2025-04-28 21:21:17,682 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:17,682 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:17,682 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:17,683 INFO  L85        PathProgramCache]: Analyzing trace with hash -1342246638, now seen corresponding path program 1 times
[2025-04-28 21:21:17,683 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:17,683 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366983036]
[2025-04-28 21:21:17,683 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:17,683 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:17,755 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-04-28 21:21:17,832 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-04-28 21:21:17,835 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:17,835 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:19,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2025-04-28 21:21:19,889 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:19,889 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366983036]
[2025-04-28 21:21:19,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366983036] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:19,889 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:19,890 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2025-04-28 21:21:19,890 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135461018]
[2025-04-28 21:21:19,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:19,890 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2025-04-28 21:21:19,890 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:19,892 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2025-04-28 21:21:19,892 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2025-04-28 21:21:19,893 INFO  L87              Difference]: Start difference. First operand 90 states and 105 transitions. Second operand  has 9 states, 6 states have (on average 5.666666666666667) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 1 states have call predecessors, (22), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23)
[2025-04-28 21:21:20,110 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:20,111 INFO  L93              Difference]: Finished difference Result 88 states and 102 transitions.
[2025-04-28 21:21:20,112 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-04-28 21:21:20,112 INFO  L79                 Accepts]: Start accepts. Automaton has  has 9 states, 6 states have (on average 5.666666666666667) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 1 states have call predecessors, (22), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 85
[2025-04-28 21:21:20,112 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:20,113 INFO  L225             Difference]: With dead ends: 88
[2025-04-28 21:21:20,114 INFO  L226             Difference]: Without dead ends: 84
[2025-04-28 21:21:20,114 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:20,115 INFO  L437           NwaCegarLoop]: 93 mSDtfsCounter, 2 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:20,115 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 717 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:20,116 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2025-04-28 21:21:20,121 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2025-04-28 21:21:20,122 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 84 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 29 states have call successors, (30), 21 states have call predecessors, (30), 21 states have return successors, (30), 27 states have call predecessors, (30), 29 states have call successors, (30)
[2025-04-28 21:21:20,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions.
[2025-04-28 21:21:20,123 INFO  L79                 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 85
[2025-04-28 21:21:20,124 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:20,124 INFO  L485      AbstractCegarLoop]: Abstraction has 84 states and 95 transitions.
[2025-04-28 21:21:20,125 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 6 states have (on average 5.666666666666667) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (22), 1 states have call predecessors, (22), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23)
[2025-04-28 21:21:20,125 INFO  L278                IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions.
[2025-04-28 21:21:20,126 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2025-04-28 21:21:20,127 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:20,127 INFO  L218           NwaCegarLoop]: trace histogram [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]
[2025-04-28 21:21:20,127 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:21:20,127 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:20,128 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:20,128 INFO  L85        PathProgramCache]: Analyzing trace with hash -132014391, now seen corresponding path program 1 times
[2025-04-28 21:21:20,128 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:20,128 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50058249]
[2025-04-28 21:21:20,128 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:20,128 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:20,185 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes.
[2025-04-28 21:21:20,206 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements.
[2025-04-28 21:21:20,206 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:20,206 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:20,440 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2025-04-28 21:21:20,440 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:20,440 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50058249]
[2025-04-28 21:21:20,440 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50058249] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:20,440 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177343954]
[2025-04-28 21:21:20,440 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:20,440 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:20,443 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:20,445 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:20,449 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:20,834 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes.
[2025-04-28 21:21:21,066 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements.
[2025-04-28 21:21:21,066 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:21,066 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:21,073 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 6 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:21,085 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:21,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:21,167 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-04-28 21:21:21,167 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177343954] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:21,167 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-04-28 21:21:21,167 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7
[2025-04-28 21:21:21,169 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919676765]
[2025-04-28 21:21:21,169 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:21,170 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-04-28 21:21:21,170 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:21,170 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-04-28 21:21:21,171 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:21,171 INFO  L87              Difference]: Start difference. First operand 84 states and 95 transitions. Second operand  has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2025-04-28 21:21:21,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:21,277 INFO  L93              Difference]: Finished difference Result 82 states and 90 transitions.
[2025-04-28 21:21:21,278 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-04-28 21:21:21,279 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 82
[2025-04-28 21:21:21,279 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:21,280 INFO  L225             Difference]: With dead ends: 82
[2025-04-28 21:21:21,284 INFO  L226             Difference]: Without dead ends: 81
[2025-04-28 21:21:21,284 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:21,285 INFO  L437           NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:21,285 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:21,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2025-04-28 21:21:21,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2025-04-28 21:21:21,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 26 states have call successors, (27), 21 states have call predecessors, (27), 21 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27)
[2025-04-28 21:21:21,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions.
[2025-04-28 21:21:21,302 INFO  L79                 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 82
[2025-04-28 21:21:21,302 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:21,302 INFO  L485      AbstractCegarLoop]: Abstraction has 81 states and 88 transitions.
[2025-04-28 21:21:21,302 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2025-04-28 21:21:21,303 INFO  L278                IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions.
[2025-04-28 21:21:21,304 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-04-28 21:21:21,304 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:21,304 INFO  L218           NwaCegarLoop]: trace histogram [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]
[2025-04-28 21:21:21,312 INFO  L540       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2025-04-28 21:21:21,504 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:21,505 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:21,505 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:21,505 INFO  L85        PathProgramCache]: Analyzing trace with hash -1115176574, now seen corresponding path program 1 times
[2025-04-28 21:21:21,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:21,506 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890674052]
[2025-04-28 21:21:21,506 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:21,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:21,559 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-04-28 21:21:21,587 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-04-28 21:21:21,587 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:21,587 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:21,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2025-04-28 21:21:21,925 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:21,925 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890674052]
[2025-04-28 21:21:21,925 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890674052] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:21,926 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:21,926 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-04-28 21:21:21,926 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354701819]
[2025-04-28 21:21:21,926 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:21,926 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-04-28 21:21:21,926 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:21,927 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-04-28 21:21:21,927 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:21,931 INFO  L87              Difference]: Start difference. First operand 81 states and 88 transitions. Second operand  has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 6 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 6 states have call successors, (21)
[2025-04-28 21:21:22,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:22,027 INFO  L93              Difference]: Finished difference Result 86 states and 94 transitions.
[2025-04-28 21:21:22,027 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-04-28 21:21:22,027 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 6 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 6 states have call successors, (21) Word has length 85
[2025-04-28 21:21:22,028 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:22,029 INFO  L225             Difference]: With dead ends: 86
[2025-04-28 21:21:22,029 INFO  L226             Difference]: Without dead ends: 86
[2025-04-28 21:21:22,029 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:22,030 INFO  L437           NwaCegarLoop]: 84 mSDtfsCounter, 2 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:22,030 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 406 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:22,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2025-04-28 21:21:22,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2025-04-28 21:21:22,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 27 states have call successors, (28), 21 states have call predecessors, (28), 23 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30)
[2025-04-28 21:21:22,046 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions.
[2025-04-28 21:21:22,046 INFO  L79                 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 85
[2025-04-28 21:21:22,047 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:22,047 INFO  L485      AbstractCegarLoop]: Abstraction has 86 states and 94 transitions.
[2025-04-28 21:21:22,047 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 6.2) internal successors, (31), 7 states have internal predecessors, (31), 6 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 6 states have call successors, (21)
[2025-04-28 21:21:22,047 INFO  L278                IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions.
[2025-04-28 21:21:22,048 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-04-28 21:21:22,048 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:22,048 INFO  L218           NwaCegarLoop]: trace histogram [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]
[2025-04-28 21:21:22,048 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-04-28 21:21:22,049 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:22,049 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:22,049 INFO  L85        PathProgramCache]: Analyzing trace with hash 128883752, now seen corresponding path program 1 times
[2025-04-28 21:21:22,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:22,049 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524138444]
[2025-04-28 21:21:22,049 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:22,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:22,099 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-04-28 21:21:22,120 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-04-28 21:21:22,120 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:22,120 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:22,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2025-04-28 21:21:22,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:22,279 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524138444]
[2025-04-28 21:21:22,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524138444] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:22,279 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:22,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:22,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424981233]
[2025-04-28 21:21:22,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:22,280 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:22,281 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:22,282 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:22,282 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:22,283 INFO  L87              Difference]: Start difference. First operand 86 states and 94 transitions. Second operand  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21)
[2025-04-28 21:21:22,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:22,319 INFO  L93              Difference]: Finished difference Result 56 states and 60 transitions.
[2025-04-28 21:21:22,319 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:22,320 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 85
[2025-04-28 21:21:22,321 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:22,322 INFO  L225             Difference]: With dead ends: 56
[2025-04-28 21:21:22,323 INFO  L226             Difference]: Without dead ends: 0
[2025-04-28 21:21:22,323 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
[2025-04-28 21:21:22,324 INFO  L437           NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:22,326 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:22,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-04-28 21:21:22,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-04-28 21:21:22,327 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)
[2025-04-28 21:21:22,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-04-28 21:21:22,327 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85
[2025-04-28 21:21:22,327 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:22,327 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-04-28 21:21:22,328 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21)
[2025-04-28 21:21:22,330 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-04-28 21:21:22,331 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-04-28 21:21:22,333 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:22,334 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2025-04-28 21:21:22,339 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:22,341 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:22,346 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:22 BoogieIcfgContainer
[2025-04-28 21:21:22,346 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:22,348 INFO  L158              Benchmark]: Toolchain (without parser) took 8123.35ms. Allocated memory was 234.9MB in the beginning and 285.2MB in the end (delta: 50.3MB). Free memory was 144.2MB in the beginning and 180.0MB in the end (delta: -35.8MB). Peak memory consumption was 8.1MB. Max. memory is 33.6GB.
[2025-04-28 21:21:22,349 INFO  L158              Benchmark]: SmtParser took 1.36ms. Allocated memory is still 234.9MB. Free memory is still 171.3MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:22,349 INFO  L158              Benchmark]: ChcToBoogie took 80.35ms. Allocated memory is still 234.9MB. Free memory was 144.2MB in the beginning and 141.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:22,349 INFO  L158              Benchmark]: Boogie Preprocessor took 104.40ms. Allocated memory is still 234.9MB. Free memory was 141.3MB in the beginning and 137.7MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:22,350 INFO  L158              Benchmark]: RCFGBuilder took 987.58ms. Allocated memory is still 234.9MB. Free memory was 137.7MB in the beginning and 97.4MB in the end (delta: 40.4MB). Peak memory consumption was 50.3MB. Max. memory is 33.6GB.
[2025-04-28 21:21:22,350 INFO  L158              Benchmark]: TraceAbstraction took 6945.20ms. Allocated memory was 234.9MB in the beginning and 285.2MB in the end (delta: 50.3MB). Free memory was 96.6MB in the beginning and 180.0MB in the end (delta: -83.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:22,352 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 1.36ms. Allocated memory is still 234.9MB. Free memory is still 171.3MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 80.35ms. Allocated memory is still 234.9MB. Free memory was 144.2MB in the beginning and 141.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 104.40ms. Allocated memory is still 234.9MB. Free memory was 141.3MB in the beginning and 137.7MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 987.58ms. Allocated memory is still 234.9MB. Free memory was 137.7MB in the beginning and 97.4MB in the end (delta: 40.4MB). Peak memory consumption was 50.3MB. Max. memory is 33.6GB.
 * TraceAbstraction took 6945.20ms. Allocated memory was 234.9MB in the beginning and 285.2MB in the end (delta: 50.3MB). Free memory was 96.6MB in the beginning and 180.0MB in the end (delta: -83.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 23 procedures, 96 locations, 155 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 2887 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2360 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 527 mSDtfsCounter, 233 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=0, InterpolantAutomatonStates: 41, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 542 ConstructedInterpolants, 0 QuantifiedInterpolants, 813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 58/65 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!
[2025-04-28 21:21:22,370 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
