./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/functions/this_external_call_return.sol_0_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:27:07,870 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:27:07,907 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b7042bd-299e-424d-83a6-e6656ef63f67/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:27:07,910 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:27:07,910 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:27:07,927 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:27:07,927 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:27:07,928 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:27:07,928 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:27:07,928 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:27:07,928 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:27:07,929 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:27:07,929 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:27:07,929 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:27:07,929 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:27:07,929 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:27:07,929 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:07,930 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:27:07,930 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:27:07,931 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:27:07,931 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:27:08,130 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:27:08,137 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:27:08,139 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:27:08,140 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:27:08,141 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:27:08,141 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b7042bd-299e-424d-83a6-e6656ef63f67/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/functions/this_external_call_return.sol_0_no_adts_000.smt2
[2025-05-07 17:27:08,142 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:27:08,144 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:27:08,394 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b7042bd-299e-424d-83a6-e6656ef63f67/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/functions/this_external_call_return.sol_0_no_adts_000.smt2
[2025-05-07 17:27:08,396 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:27:08,397 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:27:08,398 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:27:08,398 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:27:08,398 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:27:08,400 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,430 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08 Unit
[2025-05-07 17:27:08,430 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:27:08,431 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:27:08,431 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:27:08,431 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:27:08,442 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,442 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,463 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,463 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,473 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,475 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,476 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,481 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,484 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,501 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:27:08,502 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:27:08,502 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:27:08,502 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:27:08,502 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (1/1) ...
[2025-05-07 17:27:08,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:27:08,513 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:27:08,522 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 17:27:08,525 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 17:27:08,535 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:27:08,535 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:27:08,535 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:27:08,535 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_3_0 given in one single declaration
[2025-05-07 17:27:08,535 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_3_0
[2025-05-07 17:27:08,535 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_3_0
[2025-05-07 17:27:08,535 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_42_0 given in one single declaration
[2025-05-07 17:27:08,536 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_42_0
[2025-05-07 17:27:08,536 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_42_0
[2025-05-07 17:27:08,536 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_42_0 given in one single declaration
[2025-05-07 17:27:08,536 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_42_0
[2025-05-07 17:27:08,536 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_42_0
[2025-05-07 17:27:08,536 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_18_C_42_0 given in one single declaration
[2025-05-07 17:27:08,536 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_18_C_42_0
[2025-05-07 17:27:08,536 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_18_C_42_0
[2025-05-07 17:27:08,536 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_20_C_42_0 given in one single declaration
[2025-05-07 17:27:08,536 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_20_C_42_0
[2025-05-07 17:27:08,536 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_20_C_42_0
[2025-05-07 17:27:08,537 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_19_C_42_0 given in one single declaration
[2025-05-07 17:27:08,537 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_19_C_42_0
[2025-05-07 17:27:08,537 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_19_C_42_0
[2025-05-07 17:27:08,537 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_21_C_42_0 given in one single declaration
[2025-05-07 17:27:08,537 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_21_C_42_0
[2025-05-07 17:27:08,537 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_21_C_42_0
[2025-05-07 17:27:08,537 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,537 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__16_42_0
[2025-05-07 17:27:08,537 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__16_42_0
[2025-05-07 17:27:08,537 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,537 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_f__16_42_0
[2025-05-07 17:27:08,537 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,538 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_return_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,538 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_return_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_return_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_f_15_42_0 given in one single declaration
[2025-05-07 17:27:08,538 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_f_15_42_0
[2025-05-07 17:27:08,538 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_f_15_42_0
[2025-05-07 17:27:08,538 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,538 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_function_f__16_42_0
[2025-05-07 17:27:08,538 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_6_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,538 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_6_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_6_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_17_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,539 INFO  L130     BoogieDeclarations]: Found specification of procedure block_17_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_17_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_5_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,539 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_5_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_5_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_14_return_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,539 INFO  L130     BoogieDeclarations]: Found specification of procedure block_14_return_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_14_return_function_g__41_42_0
[2025-05-07 17:27:08,539 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_15_function_f__16_42_0 given in one single declaration
[2025-05-07 17:27:08,539 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_15_function_f__16_42_0
[2025-05-07 17:27:08,539 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_15_function_f__16_42_0
[2025-05-07 17:27:08,539 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_13_g_40_42_0 given in one single declaration
[2025-05-07 17:27:08,540 INFO  L130     BoogieDeclarations]: Found specification of procedure block_13_g_40_42_0
[2025-05-07 17:27:08,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_13_g_40_42_0
[2025-05-07 17:27:08,540 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,540 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_g__41_42_0
[2025-05-07 17:27:08,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_g__41_42_0
[2025-05-07 17:27:08,540 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_g__41_42_0 given in one single declaration
[2025-05-07 17:27:08,540 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_g__41_42_0
[2025-05-07 17:27:08,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_g__41_42_0
[2025-05-07 17:27:08,540 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:27:08,540 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:27:08,540 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:27:08,678 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:27:08,680 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:27:08,906 INFO  L?                        ?]: Removed 236 outVars from TransFormulas that were not future-live.
[2025-05-07 17:27:08,906 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:27:08,915 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:27:08,916 INFO  L312             CfgBuilder]: Removed 11 assume(true) statements.
[2025-05-07 17:27:08,916 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:08 BoogieIcfgContainer
[2025-05-07 17:27:08,916 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:27:08,918 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:27:08,918 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:27:08,920 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:27:08,921 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:27:08" (1/3) ...
[2025-05-07 17:27:08,921 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:27:08, skipping insertion in model container
[2025-05-07 17:27:08,921 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:27:08" (2/3) ...
[2025-05-07 17:27:08,921 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:27:08, skipping insertion in model container
[2025-05-07 17:27:08,921 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:27:08" (3/3) ...
[2025-05-07 17:27:08,922 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:27:08,932 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:27:08,934 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 23 procedures, 91 locations, 137 edges, 23 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:27:08,967 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:27:08,977 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;@6092e253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:27:08,977 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:27:08,980 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 91 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 31 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (32), 27 states have call predecessors, (32), 31 states have call successors, (32)
[2025-05-07 17:27:08,988 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-05-07 17:27:08,988 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:08,989 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]
[2025-05-07 17:27:08,989 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:08,992 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:08,992 INFO  L85        PathProgramCache]: Analyzing trace with hash -379649154, now seen corresponding path program 1 times
[2025-05-07 17:27:08,997 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:08,998 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987544105]
[2025-05-07 17:27:08,998 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:08,998 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:09,048 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-05-07 17:27:09,158 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-05-07 17:27:09,158 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:09,158 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:09,459 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 17:27:09,460 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:09,460 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987544105]
[2025-05-07 17:27:09,461 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987544105] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:09,461 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:09,463 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-05-07 17:27:09,464 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397015493]
[2025-05-07 17:27:09,465 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:09,468 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-05-07 17:27:09,468 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:09,495 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-05-07 17:27:09,496 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-05-07 17:27:09,499 INFO  L87              Difference]: Start difference. First operand  has 91 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 31 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (32), 27 states have call predecessors, (32), 31 states have call successors, (32) 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)
[2025-05-07 17:27:09,609 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:09,610 INFO  L93              Difference]: Finished difference Result 89 states and 102 transitions.
[2025-05-07 17:27:09,611 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-05-07 17:27:09,613 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
[2025-05-07 17:27:09,613 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:09,618 INFO  L225             Difference]: With dead ends: 89
[2025-05-07 17:27:09,618 INFO  L226             Difference]: Without dead ends: 87
[2025-05-07 17:27:09,620 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
[2025-05-07 17:27:09,622 INFO  L437           NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 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
[2025-05-07 17:27:09,623 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:27:09,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2025-05-07 17:27:09,649 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87.
[2025-05-07 17:27:09,650 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 87 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 38 states have internal predecessors, (38), 29 states have call successors, (30), 22 states have call predecessors, (30), 22 states have return successors, (30), 26 states have call predecessors, (30), 29 states have call successors, (30)
[2025-05-07 17:27:09,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions.
[2025-05-07 17:27:09,654 INFO  L79                 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 65
[2025-05-07 17:27:09,654 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:09,654 INFO  L485      AbstractCegarLoop]: Abstraction has 87 states and 98 transitions.
[2025-05-07 17:27:09,655 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)
[2025-05-07 17:27:09,655 INFO  L278                IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions.
[2025-05-07 17:27:09,657 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:27:09,657 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:09,657 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:09,657 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:27:09,657 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:09,658 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:09,658 INFO  L85        PathProgramCache]: Analyzing trace with hash 401800524, now seen corresponding path program 1 times
[2025-05-07 17:27:09,658 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:09,658 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866079519]
[2025-05-07 17:27:09,658 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:09,658 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:09,693 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:27:09,714 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:27:09,714 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:09,714 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:09,876 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 17:27:09,877 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:09,877 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866079519]
[2025-05-07 17:27:09,877 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866079519] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:09,877 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:09,877 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-05-07 17:27:09,877 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519320957]
[2025-05-07 17:27:09,877 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:09,878 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-05-07 17:27:09,878 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:09,879 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-05-07 17:27:09,879 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:27:09,879 INFO  L87              Difference]: Start difference. First operand 87 states and 98 transitions. Second operand  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:27:09,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:09,905 INFO  L93              Difference]: Finished difference Result 91 states and 103 transitions.
[2025-05-07 17:27:09,905 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-05-07 17:27:09,906 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 68
[2025-05-07 17:27:09,906 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:09,907 INFO  L225             Difference]: With dead ends: 91
[2025-05-07 17:27:09,907 INFO  L226             Difference]: Without dead ends: 87
[2025-05-07 17:27:09,907 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
[2025-05-07 17:27:09,908 INFO  L437           NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:09,908 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 374 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:09,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2025-05-07 17:27:09,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85.
[2025-05-07 17:27:09,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 27 states have call successors, (28), 22 states have call predecessors, (28), 22 states have return successors, (28), 25 states have call predecessors, (28), 27 states have call successors, (28)
[2025-05-07 17:27:09,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions.
[2025-05-07 17:27:09,914 INFO  L79                 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 68
[2025-05-07 17:27:09,915 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:09,915 INFO  L485      AbstractCegarLoop]: Abstraction has 85 states and 93 transitions.
[2025-05-07 17:27:09,915 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:27:09,915 INFO  L278                IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions.
[2025-05-07 17:27:09,916 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:27:09,916 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:09,916 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:09,916 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:27:09,916 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:09,917 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:09,917 INFO  L85        PathProgramCache]: Analyzing trace with hash -686406968, now seen corresponding path program 1 times
[2025-05-07 17:27:09,917 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:09,917 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556627954]
[2025-05-07 17:27:09,917 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:09,917 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:09,948 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:27:09,965 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:27:09,966 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:09,966 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:10,446 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 17:27:10,447 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:10,447 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556627954]
[2025-05-07 17:27:10,447 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556627954] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:10,447 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:10,447 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:27:10,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999540482]
[2025-05-07 17:27:10,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:10,448 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:27:10,448 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:10,448 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:27:10,448 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:27:10,449 INFO  L87              Difference]: Start difference. First operand 85 states and 93 transitions. Second operand  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 5 states have call successors, (19), 1 states have call predecessors, (19), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19)
[2025-05-07 17:27:10,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:10,525 INFO  L93              Difference]: Finished difference Result 83 states and 90 transitions.
[2025-05-07 17:27:10,526 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:27:10,526 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 5 states have call successors, (19), 1 states have call predecessors, (19), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 68
[2025-05-07 17:27:10,526 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:10,528 INFO  L225             Difference]: With dead ends: 83
[2025-05-07 17:27:10,528 INFO  L226             Difference]: Without dead ends: 80
[2025-05-07 17:27:10,528 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 17:27:10,529 INFO  L437           NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:10,529 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:27:10,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-05-07 17:27:10,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2025-05-07 17:27:10,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 35 states have internal predecessors, (35), 25 states have call successors, (25), 21 states have call predecessors, (25), 21 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25)
[2025-05-07 17:27:10,539 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions.
[2025-05-07 17:27:10,539 INFO  L79                 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 68
[2025-05-07 17:27:10,539 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:10,539 INFO  L485      AbstractCegarLoop]: Abstraction has 80 states and 85 transitions.
[2025-05-07 17:27:10,539 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 6 states have (on average 5.0) internal successors, (30), 8 states have internal predecessors, (30), 5 states have call successors, (19), 1 states have call predecessors, (19), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19)
[2025-05-07 17:27:10,539 INFO  L278                IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions.
[2025-05-07 17:27:10,542 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:27:10,542 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:27:10,543 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:27:10,543 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:27:10,543 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:27:10,543 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:27:10,543 INFO  L85        PathProgramCache]: Analyzing trace with hash -1120301144, now seen corresponding path program 1 times
[2025-05-07 17:27:10,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:27:10,544 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391099425]
[2025-05-07 17:27:10,544 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:27:10,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:27:10,580 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:27:10,599 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:27:10,599 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:27:10,599 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:27:10,742 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 17:27:10,742 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:27:10,742 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391099425]
[2025-05-07 17:27:10,742 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391099425] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:27:10,742 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:27:10,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-05-07 17:27:10,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980819109]
[2025-05-07 17:27:10,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:27:10,743 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-05-07 17:27:10,743 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:27:10,743 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-05-07 17:27:10,743 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2025-05-07 17:27:10,744 INFO  L87              Difference]: Start difference. First operand 80 states and 85 transitions. Second operand  has 7 states, 5 states have (on average 6.0) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19)
[2025-05-07 17:27:10,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:27:10,772 INFO  L93              Difference]: Finished difference Result 41 states and 40 transitions.
[2025-05-07 17:27:10,773 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-05-07 17:27:10,773 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 5 states have (on average 6.0) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) Word has length 68
[2025-05-07 17:27:10,773 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:27:10,773 INFO  L225             Difference]: With dead ends: 41
[2025-05-07 17:27:10,773 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:27:10,774 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
[2025-05-07 17:27:10,774 INFO  L437           NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:27:10,774 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:27:10,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:27:10,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:27:10,775 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 17:27:10,775 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:27:10,775 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68
[2025-05-07 17:27:10,775 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:27:10,775 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:27:10,775 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 5 states have (on average 6.0) internal successors, (30), 7 states have internal predecessors, (30), 6 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19)
[2025-05-07 17:27:10,775 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:27:10,776 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:27:10,777 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:27:10,778 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:27:10,780 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:27:10,782 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:27:10,784 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:27:10 BoogieIcfgContainer
[2025-05-07 17:27:10,784 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:27:10,784 INFO  L158              Benchmark]: Toolchain (without parser) took 2387.21ms. Allocated memory is still 234.9MB. Free memory was 145.3MB in the beginning and 98.1MB in the end (delta: 47.2MB). Peak memory consumption was 46.6MB. Max. memory is 33.6GB.
[2025-05-07 17:27:10,785 INFO  L158              Benchmark]: SmtParser took 0.18ms. Allocated memory is still 234.9MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:10,785 INFO  L158              Benchmark]: ChcToBoogie took 32.82ms. Allocated memory is still 234.9MB. Free memory was 145.3MB in the beginning and 142.0MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:10,785 INFO  L158              Benchmark]: Boogie Preprocessor took 70.06ms. Allocated memory is still 234.9MB. Free memory was 142.0MB in the beginning and 138.7MB in the end (delta: 3.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:27:10,785 INFO  L158              Benchmark]: RCFGBuilder took 414.76ms. Allocated memory is still 234.9MB. Free memory was 138.6MB in the beginning and 171.2MB in the end (delta: -32.7MB). Peak memory consumption was 42.8MB. Max. memory is 33.6GB.
[2025-05-07 17:27:10,785 INFO  L158              Benchmark]: TraceAbstraction took 1866.09ms. Allocated memory is still 234.9MB. Free memory was 170.8MB in the beginning and 98.1MB in the end (delta: 72.8MB). Peak memory consumption was 71.0MB. Max. memory is 33.6GB.
[2025-05-07 17:27:10,786 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.18ms. Allocated memory is still 234.9MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 32.82ms. Allocated memory is still 234.9MB. Free memory was 145.3MB in the beginning and 142.0MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 70.06ms. Allocated memory is still 234.9MB. Free memory was 142.0MB in the beginning and 138.7MB in the end (delta: 3.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 414.76ms. Allocated memory is still 234.9MB. Free memory was 138.6MB in the beginning and 171.2MB in the end (delta: -32.7MB). Peak memory consumption was 42.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1866.09ms. Allocated memory is still 234.9MB. Free memory was 170.8MB in the beginning and 98.1MB in the end (delta: 72.8MB). Peak memory consumption was 71.0MB. 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, 91 locations, 137 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 1606 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1290 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 316 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, InterpolantAutomatonStates: 27, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 383 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 17:27:10,796 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
