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


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:28:31,358 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:28:31,394 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b9d6fe-f9a0-47df-acbf-e175222c6ea5/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:28:31,397 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:28:31,397 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:28:31,410 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:28:31,410 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:28:31,410 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:28:31,410 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:28:31,410 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:28:31,411 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:28:31,411 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:28:31,411 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:31,411 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:28:31,411 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:28:31,412 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:28:31,412 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:28:31,600 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:28:31,606 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:28:31,608 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:28:31,608 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:28:31,609 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:28:31,609 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b9d6fe-f9a0-47df-acbf-e175222c6ea5/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/functions/functions_identity_as_tuple.sol_0_no_adts_000.smt2
[2025-05-07 17:28:31,610 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:28:31,612 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:28:31,805 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2b9d6fe-f9a0-47df-acbf-e175222c6ea5/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/functions/functions_identity_as_tuple.sol_0_no_adts_000.smt2
[2025-05-07 17:28:31,807 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:28:31,808 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:28:31,809 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:28:31,809 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:28:31,809 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:28:31,811 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,839 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31 Unit
[2025-05-07 17:28:31,839 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:28:31,840 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:28:31,840 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:28:31,840 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:28:31,850 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,851 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,871 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,871 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,874 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,875 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,877 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,878 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,879 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,889 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:28:31,890 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:28:31,890 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:28:31,890 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:28:31,890 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (1/1) ...
[2025-05-07 17:28:31,892 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:28:31,900 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:28:31,908 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2025-05-07 17:28:31,910 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-05-07 17:28:31,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:28:31,920 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:28:31,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:28:31,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_3_0 given in one single declaration
[2025-05-07 17:28:31,920 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_3_0
[2025-05-07 17:28:31,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_3_0
[2025-05-07 17:28:31,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_6_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,920 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_6_function_g__30_31_0
[2025-05-07 17:28:31,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_6_function_g__30_31_0
[2025-05-07 17:28:31,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_17_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,920 INFO  L130     BoogieDeclarations]: Found specification of procedure block_17_function_g__30_31_0
[2025-05-07 17:28:31,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_17_function_g__30_31_0
[2025-05-07 17:28:31,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_5_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,921 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_5_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_5_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_14_return_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,921 INFO  L130     BoogieDeclarations]: Found specification of procedure block_14_return_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_14_return_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,921 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_g__30_31_0
[2025-05-07 17:28:31,921 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_13_g_29_31_0 given in one single declaration
[2025-05-07 17:28:31,921 INFO  L130     BoogieDeclarations]: Found specification of procedure block_13_g_29_31_0
[2025-05-07 17:28:31,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_13_g_29_31_0
[2025-05-07 17:28:31,921 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_function_g__30_31_0 given in one single declaration
[2025-05-07 17:28:31,921 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_function_g__30_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_function_g__30_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_15_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_15_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_15_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_return_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_return_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_return_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_h_9_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_h_9_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_h_9_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_function_h__10_31_0
[2025-05-07 17:28:31,922 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_31_0 given in one single declaration
[2025-05-07 17:28:31,922 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_31_0
[2025-05-07 17:28:31,922 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_31_0
[2025-05-07 17:28:31,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_21_C_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_21_C_31_0
[2025-05-07 17:28:31,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_21_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_18_C_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_18_C_31_0
[2025-05-07 17:28:31,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_18_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_20_C_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_20_C_31_0
[2025-05-07 17:28:31,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_20_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_19_C_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_19_C_31_0
[2025-05-07 17:28:31,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_19_C_31_0
[2025-05-07 17:28:31,923 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,923 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_h__10_31_0
[2025-05-07 17:28:31,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_h__10_31_0
[2025-05-07 17:28:31,924 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_function_h__10_31_0 given in one single declaration
[2025-05-07 17:28:31,924 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_function_h__10_31_0
[2025-05-07 17:28:31,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_function_h__10_31_0
[2025-05-07 17:28:31,924 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:28:31,924 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:28:31,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:28:32,047 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:28:32,049 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:28:32,238 INFO  L?                        ?]: Removed 171 outVars from TransFormulas that were not future-live.
[2025-05-07 17:28:32,238 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:28:32,246 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:28:32,246 INFO  L312             CfgBuilder]: Removed 11 assume(true) statements.
[2025-05-07 17:28:32,247 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:32 BoogieIcfgContainer
[2025-05-07 17:28:32,247 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:28:32,248 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:28:32,248 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:28:32,251 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:28:32,251 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:28:31" (1/3) ...
[2025-05-07 17:28:32,251 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4962bdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:28:32, skipping insertion in model container
[2025-05-07 17:28:32,251 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:28:31" (2/3) ...
[2025-05-07 17:28:32,251 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4962bdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:28:32, skipping insertion in model container
[2025-05-07 17:28:32,251 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:28:32" (3/3) ...
[2025-05-07 17:28:32,252 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:28:32,262 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:28:32,264 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 17:28:32,292 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:28:32,300 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;@3f4edf2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:28:32,300 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:28:32,303 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 17:28:32,309 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:28:32,309 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:32,310 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 17:28:32,310 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:32,313 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:32,314 INFO  L85        PathProgramCache]: Analyzing trace with hash -1614850919, now seen corresponding path program 1 times
[2025-05-07 17:28:32,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:32,319 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303373177]
[2025-05-07 17:28:32,319 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:32,320 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:32,360 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:28:32,377 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:28:32,377 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:32,378 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:32,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:32,554 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:32,554 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303373177]
[2025-05-07 17:28:32,555 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303373177] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:32,555 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:32,557 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:28:32,558 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3095173]
[2025-05-07 17:28:32,558 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:32,561 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:28:32,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:32,589 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:28:32,589 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:28:32,592 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 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:28:32,636 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:32,636 INFO  L93              Difference]: Finished difference Result 93 states and 108 transitions.
[2025-05-07 17:28:32,638 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:28:32,639 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 68
[2025-05-07 17:28:32,639 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:32,645 INFO  L225             Difference]: With dead ends: 93
[2025-05-07 17:28:32,645 INFO  L226             Difference]: Without dead ends: 89
[2025-05-07 17:28:32,646 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:28:32,649 INFO  L437           NwaCegarLoop]: 104 mSDtfsCounter, 1 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:32,649 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 304 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:32,659 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2025-05-07 17:28:32,676 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87.
[2025-05-07 17:28:32,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 87 states, 36 states have (on average 1.0555555555555556) 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 17:28:32,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions.
[2025-05-07 17:28:32,681 INFO  L79                 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 68
[2025-05-07 17:28:32,681 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:32,681 INFO  L485      AbstractCegarLoop]: Abstraction has 87 states and 98 transitions.
[2025-05-07 17:28:32,681 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:28:32,682 INFO  L278                IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions.
[2025-05-07 17:28:32,683 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-05-07 17:28:32,683 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:32,683 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 17:28:32,684 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:28:32,684 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:32,684 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:32,685 INFO  L85        PathProgramCache]: Analyzing trace with hash -2072652216, now seen corresponding path program 1 times
[2025-05-07 17:28:32,685 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:32,685 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494435783]
[2025-05-07 17:28:32,685 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:32,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:32,722 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-05-07 17:28:32,751 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-05-07 17:28:32,751 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:32,752 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:32,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:32,892 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:32,892 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494435783]
[2025-05-07 17:28:32,892 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494435783] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:32,892 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:32,892 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-05-07 17:28:32,892 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394239677]
[2025-05-07 17:28:32,892 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:32,893 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-05-07 17:28:32,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:32,894 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-05-07 17:28:32,894 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-05-07 17:28:32,895 INFO  L87              Difference]: Start difference. First operand 87 states and 98 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), 6 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:28:32,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:32,976 INFO  L93              Difference]: Finished difference Result 86 states and 95 transitions.
[2025-05-07 17:28:32,977 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-05-07 17:28:32,977 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), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 65
[2025-05-07 17:28:32,977 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:32,978 INFO  L225             Difference]: With dead ends: 86
[2025-05-07 17:28:32,978 INFO  L226             Difference]: Without dead ends: 85
[2025-05-07 17:28:32,979 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 17:28:32,979 INFO  L437           NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 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 17:28:32,980 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:28:32,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2025-05-07 17:28:32,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2025-05-07 17:28:32,986 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 17:28:32,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions.
[2025-05-07 17:28:32,988 INFO  L79                 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 65
[2025-05-07 17:28:32,988 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:32,988 INFO  L485      AbstractCegarLoop]: Abstraction has 85 states and 93 transitions.
[2025-05-07 17:28:32,988 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), 6 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:28:32,988 INFO  L278                IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions.
[2025-05-07 17:28:32,990 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:28:32,990 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:32,990 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 17:28:32,990 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:28:32,990 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:32,991 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:32,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -2025259755, now seen corresponding path program 1 times
[2025-05-07 17:28:32,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:32,991 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437044780]
[2025-05-07 17:28:32,991 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:32,991 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:33,022 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:28:33,045 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:28:33,045 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:33,045 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:33,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:33,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:33,300 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437044780]
[2025-05-07 17:28:33,300 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437044780] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:33,300 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:33,300 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:28:33,300 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809051784]
[2025-05-07 17:28:33,300 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:33,300 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:28:33,300 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:33,301 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:28:33,301 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:28:33,301 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 17:28:33,384 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:33,384 INFO  L93              Difference]: Finished difference Result 83 states and 90 transitions.
[2025-05-07 17:28:33,385 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:28:33,385 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 17:28:33,386 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:33,387 INFO  L225             Difference]: With dead ends: 83
[2025-05-07 17:28:33,387 INFO  L226             Difference]: Without dead ends: 80
[2025-05-07 17:28:33,387 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2025-05-07 17:28:33,388 INFO  L437           NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:33,388 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 577 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:28:33,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-05-07 17:28:33,392 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2025-05-07 17:28:33,392 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 17:28:33,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions.
[2025-05-07 17:28:33,393 INFO  L79                 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 68
[2025-05-07 17:28:33,393 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:33,393 INFO  L485      AbstractCegarLoop]: Abstraction has 80 states and 85 transitions.
[2025-05-07 17:28:33,394 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 17:28:33,394 INFO  L278                IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions.
[2025-05-07 17:28:33,394 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-05-07 17:28:33,394 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:28:33,394 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 17:28:33,395 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:28:33,395 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:28:33,395 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:28:33,395 INFO  L85        PathProgramCache]: Analyzing trace with hash 953345621, now seen corresponding path program 1 times
[2025-05-07 17:28:33,395 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:28:33,395 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317346957]
[2025-05-07 17:28:33,395 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:28:33,395 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:28:33,424 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-05-07 17:28:33,442 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-05-07 17:28:33,443 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:28:33,443 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:28:33,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-05-07 17:28:33,537 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:28:33,537 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317346957]
[2025-05-07 17:28:33,537 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317346957] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:28:33,537 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:28:33,537 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:28:33,537 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972874059]
[2025-05-07 17:28:33,538 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:28:33,538 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:28:33,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:28:33,538 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:28:33,539 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:28:33,539 INFO  L87              Difference]: Start difference. First operand 80 states and 85 transitions. Second operand  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:28:33,571 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:28:33,571 INFO  L93              Difference]: Finished difference Result 74 states and 79 transitions.
[2025-05-07 17:28:33,572 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:28:33,572 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 68
[2025-05-07 17:28:33,572 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:28:33,572 INFO  L225             Difference]: With dead ends: 74
[2025-05-07 17:28:33,572 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:28:33,573 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:28:33,573 INFO  L437           NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:28:33,574 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 367 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:28:33,574 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:28:33,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:28:33,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-05-07 17:28:33,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:28:33,575 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68
[2025-05-07 17:28:33,575 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:28:33,575 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:28:33,575 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (19), 1 states have call predecessors, (19), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19)
[2025-05-07 17:28:33,575 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:28:33,575 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:28:33,578 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:28:33,578 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:28:33,581 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2025-05-07 17:28:33,583 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:28:33,586 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:28:33 BoogieIcfgContainer
[2025-05-07 17:28:33,586 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:28:33,587 INFO  L158              Benchmark]: Toolchain (without parser) took 1778.62ms. Allocated memory is still 234.9MB. Free memory was 152.8MB in the beginning and 79.7MB in the end (delta: 73.1MB). Peak memory consumption was 61.7MB. Max. memory is 33.6GB.
[2025-05-07 17:28:33,587 INFO  L158              Benchmark]: SmtParser took 0.18ms. Allocated memory is still 234.9MB. Free memory is still 172.5MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:33,587 INFO  L158              Benchmark]: ChcToBoogie took 30.30ms. Allocated memory is still 234.9MB. Free memory was 152.8MB in the beginning and 150.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:33,588 INFO  L158              Benchmark]: Boogie Preprocessor took 49.58ms. Allocated memory is still 234.9MB. Free memory was 150.2MB in the beginning and 147.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:28:33,588 INFO  L158              Benchmark]: RCFGBuilder took 357.20ms. Allocated memory is still 234.9MB. Free memory was 147.1MB in the beginning and 189.8MB in the end (delta: -42.7MB). Peak memory consumption was 42.6MB. Max. memory is 33.6GB.
[2025-05-07 17:28:33,588 INFO  L158              Benchmark]: TraceAbstraction took 1338.29ms. Allocated memory is still 234.9MB. Free memory was 189.4MB in the beginning and 79.7MB in the end (delta: 109.6MB). Peak memory consumption was 102.9MB. Max. memory is 33.6GB.
[2025-05-07 17:28:33,589 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 172.5MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 30.30ms. Allocated memory is still 234.9MB. Free memory was 152.8MB in the beginning and 150.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 49.58ms. Allocated memory is still 234.9MB. Free memory was 150.2MB in the beginning and 147.2MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 357.20ms. Allocated memory is still 234.9MB. Free memory was 147.1MB in the beginning and 189.8MB in the end (delta: -42.7MB). Peak memory consumption was 42.6MB. Max. memory is 33.6GB.
 * TraceAbstraction took 1338.29ms. Allocated memory is still 234.9MB. Free memory was 189.4MB in the beginning and 79.7MB in the end (delta: 109.6MB). Peak memory consumption was 102.9MB. 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 1767 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1413 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 354 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-05-07 17:28:33,601 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
