./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/while_1.sol_0_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:26:15,094 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:26:15,132 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd412979-d3bc-4760-a5a8-b471e632a302/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:26:15,135 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:26:15,135 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:26:15,148 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:26:15,148 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:26:15,148 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:26:15,148 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:26:15,149 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:26:15,149 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:26:15,149 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:26:15,149 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:15,149 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:26:15,150 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:26:15,150 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:26:15,345 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:26:15,352 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:26:15,354 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:26:15,356 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:26:15,356 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:26:15,357 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd412979-d3bc-4760-a5a8-b471e632a302/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/while_1.sol_0_no_adts_000.smt2
[2025-05-07 17:26:15,358 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:26:15,362 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:26:15,564 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd412979-d3bc-4760-a5a8-b471e632a302/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/loops/while_1.sol_0_no_adts_000.smt2
[2025-05-07 17:26:15,567 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:26:15,568 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:26:15,568 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:26:15,568 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:26:15,569 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:26:15,571 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,598 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15 Unit
[2025-05-07 17:26:15,598 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:26:15,599 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:26:15,599 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:26:15,599 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:26:15,610 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,610 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,630 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,630 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,633 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,634 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,636 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,637 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,638 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,647 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:26:15,647 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:26:15,647 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:26:15,647 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:26:15,648 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (1/1) ...
[2025-05-07 17:26:15,650 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:26:15,658 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:26:15,666 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 17:26:15,668 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 17:26:15,675 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:26:15,675 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:26:15,675 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:26:15,675 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_3_0 given in one single declaration
[2025-05-07 17:26:15,675 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_3_0
[2025-05-07 17:26:15,675 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_3_0
[2025-05-07 17:26:15,675 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_15_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure block_15_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_15_function_f__37_38_0
[2025-05-07 17:26:15,676 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_f_36_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_f_36_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_f_36_38_0
[2025-05-07 17:26:15,676 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_while_header_f_29_38_0 given in one single declaration
[2025-05-07 17:26:15,676 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_while_header_f_29_38_0
[2025-05-07 17:26:15,676 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_while_header_f_29_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_14_f_36_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_14_f_36_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_14_f_36_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_if_true_f_22_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_if_true_f_22_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_if_true_f_22_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_if_header_f_27_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_if_header_f_27_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_if_header_f_27_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_while_body_f_28_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_while_body_f_28_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_while_body_f_28_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_13_if_false_f_26_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_13_if_false_f_26_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_13_if_false_f_26_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_36_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_36_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_36_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,677 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__37_38_0
[2025-05-07 17:26:15,677 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__37_38_0
[2025-05-07 17:26:15,677 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__37_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__37_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__37_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_C_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_C_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_20_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_20_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_20_C_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_17_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_17_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_17_C_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_19_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_19_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_19_C_38_0
[2025-05-07 17:26:15,678 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_18_C_38_0 given in one single declaration
[2025-05-07 17:26:15,678 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_18_C_38_0
[2025-05-07 17:26:15,678 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_18_C_38_0
[2025-05-07 17:26:15,679 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:26:15,679 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:26:15,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:26:15,806 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:26:15,808 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:26:15,984 INFO  L?                        ?]: Removed 136 outVars from TransFormulas that were not future-live.
[2025-05-07 17:26:15,984 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:26:15,993 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:26:15,993 INFO  L312             CfgBuilder]: Removed 9 assume(true) statements.
[2025-05-07 17:26:15,993 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:15 BoogieIcfgContainer
[2025-05-07 17:26:15,993 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:26:15,995 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:26:15,995 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:26:15,997 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:26:15,998 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:26:15" (1/3) ...
[2025-05-07 17:26:15,998 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2c6449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:26:15, skipping insertion in model container
[2025-05-07 17:26:15,998 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:26:15" (2/3) ...
[2025-05-07 17:26:15,998 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2c6449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:26:15, skipping insertion in model container
[2025-05-07 17:26:15,998 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:26:15" (3/3) ...
[2025-05-07 17:26:15,999 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:26:16,009 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:26:16,011 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 23 procedures, 90 locations, 130 edges, 23 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:26:16,039 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:26:16,046 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;@1ad796f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:26:16,046 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:26:16,049 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 90 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 43 states have internal predecessors, (43), 28 states have call successors, (29), 22 states have call predecessors, (29), 22 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29)
[2025-05-07 17:26:16,055 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:26:16,055 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:16,056 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]
[2025-05-07 17:26:16,056 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:16,059 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:16,060 INFO  L85        PathProgramCache]: Analyzing trace with hash -509508528, now seen corresponding path program 1 times
[2025-05-07 17:26:16,065 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:16,065 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032609337]
[2025-05-07 17:26:16,065 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:16,065 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:16,107 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:26:16,124 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:26:16,125 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:16,125 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:16,299 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 17:26:16,299 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:16,299 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032609337]
[2025-05-07 17:26:16,300 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032609337] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:16,300 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:16,302 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:26:16,303 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812161824]
[2025-05-07 17:26:16,303 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:16,306 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:26:16,306 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:16,324 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:26:16,324 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:26:16,326 INFO  L87              Difference]: Start difference. First operand  has 90 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 43 states have internal predecessors, (43), 28 states have call successors, (29), 22 states have call predecessors, (29), 22 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) Second operand  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:26:16,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:16,374 INFO  L93              Difference]: Finished difference Result 92 states and 103 transitions.
[2025-05-07 17:26:16,375 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:26:16,376 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59
[2025-05-07 17:26:16,377 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:16,382 INFO  L225             Difference]: With dead ends: 92
[2025-05-07 17:26:16,382 INFO  L226             Difference]: Without dead ends: 88
[2025-05-07 17:26:16,383 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 17:26:16,385 INFO  L437           NwaCegarLoop]: 100 mSDtfsCounter, 1 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 292 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 17:26:16,386 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 292 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:16,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2025-05-07 17:26:16,422 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86.
[2025-05-07 17:26:16,428 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 40 states have internal predecessors, (40), 26 states have call successors, (27), 22 states have call predecessors, (27), 22 states have return successors, (27), 23 states have call predecessors, (27), 26 states have call successors, (27)
[2025-05-07 17:26:16,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions.
[2025-05-07 17:26:16,434 INFO  L79                 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 59
[2025-05-07 17:26:16,435 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:16,435 INFO  L485      AbstractCegarLoop]: Abstraction has 86 states and 94 transitions.
[2025-05-07 17:26:16,435 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:26:16,435 INFO  L278                IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions.
[2025-05-07 17:26:16,438 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:26:16,438 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:16,438 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]
[2025-05-07 17:26:16,438 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:26:16,439 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:16,439 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:16,439 INFO  L85        PathProgramCache]: Analyzing trace with hash -1534255020, now seen corresponding path program 1 times
[2025-05-07 17:26:16,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:16,440 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777838034]
[2025-05-07 17:26:16,440 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:16,440 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:16,473 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:26:16,505 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:26:16,505 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:16,505 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:16,715 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 17:26:16,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:16,715 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777838034]
[2025-05-07 17:26:16,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777838034] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:16,715 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:16,715 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2025-05-07 17:26:16,715 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905129343]
[2025-05-07 17:26:16,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:16,716 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-05-07 17:26:16,716 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:16,717 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-05-07 17:26:16,717 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2025-05-07 17:26:16,717 INFO  L87              Difference]: Start difference. First operand 86 states and 94 transitions. Second operand  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:26:16,854 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:16,854 INFO  L93              Difference]: Finished difference Result 97 states and 108 transitions.
[2025-05-07 17:26:16,855 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-05-07 17:26:16,855 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) Word has length 59
[2025-05-07 17:26:16,855 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:16,856 INFO  L225             Difference]: With dead ends: 97
[2025-05-07 17:26:16,856 INFO  L226             Difference]: Without dead ends: 97
[2025-05-07 17:26:16,856 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2025-05-07 17:26:16,857 INFO  L437           NwaCegarLoop]: 92 mSDtfsCounter, 3 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:16,857 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 806 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:26:16,858 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2025-05-07 17:26:16,863 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2025-05-07 17:26:16,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 27 states have call successors, (28), 22 states have call predecessors, (28), 27 states have return successors, (35), 29 states have call predecessors, (35), 27 states have call successors, (35)
[2025-05-07 17:26:16,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions.
[2025-05-07 17:26:16,864 INFO  L79                 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 59
[2025-05-07 17:26:16,865 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:16,865 INFO  L485      AbstractCegarLoop]: Abstraction has 97 states and 108 transitions.
[2025-05-07 17:26:16,865 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16)
[2025-05-07 17:26:16,865 INFO  L278                IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions.
[2025-05-07 17:26:16,866 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-05-07 17:26:16,866 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:16,866 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]
[2025-05-07 17:26:16,866 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:26:16,866 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:16,867 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:16,867 INFO  L85        PathProgramCache]: Analyzing trace with hash 1985871956, now seen corresponding path program 1 times
[2025-05-07 17:26:16,867 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:16,867 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466296333]
[2025-05-07 17:26:16,867 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:16,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:16,888 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-05-07 17:26:16,900 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-05-07 17:26:16,901 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:16,901 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:17,076 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 17:26:17,076 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:17,076 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466296333]
[2025-05-07 17:26:17,077 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466296333] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:17,077 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:17,077 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:26:17,077 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217174535]
[2025-05-07 17:26:17,077 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:17,077 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:26:17,077 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:17,078 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:26:17,078 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:26:17,078 INFO  L87              Difference]: Start difference. First operand 97 states and 108 transitions. Second operand  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:26:17,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:17,097 INFO  L93              Difference]: Finished difference Result 95 states and 104 transitions.
[2025-05-07 17:26:17,097 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:26:17,098 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59
[2025-05-07 17:26:17,098 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:17,099 INFO  L225             Difference]: With dead ends: 95
[2025-05-07 17:26:17,099 INFO  L226             Difference]: Without dead ends: 93
[2025-05-07 17:26:17,099 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 17:26:17,099 INFO  L437           NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:17,099 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:17,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2025-05-07 17:26:17,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2025-05-07 17:26:17,104 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93 states, 41 states have (on average 1.048780487804878) internal successors, (43), 43 states have internal predecessors, (43), 26 states have call successors, (26), 21 states have call predecessors, (26), 26 states have return successors, (32), 28 states have call predecessors, (32), 26 states have call successors, (32)
[2025-05-07 17:26:17,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions.
[2025-05-07 17:26:17,105 INFO  L79                 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 59
[2025-05-07 17:26:17,105 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:17,105 INFO  L485      AbstractCegarLoop]: Abstraction has 93 states and 101 transitions.
[2025-05-07 17:26:17,106 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)
[2025-05-07 17:26:17,106 INFO  L278                IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions.
[2025-05-07 17:26:17,107 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2025-05-07 17:26:17,107 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:17,107 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:26:17,107 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:26:17,107 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:17,107 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:17,107 INFO  L85        PathProgramCache]: Analyzing trace with hash 1785731471, now seen corresponding path program 1 times
[2025-05-07 17:26:17,107 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:17,107 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882332155]
[2025-05-07 17:26:17,108 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:17,108 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:17,130 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes.
[2025-05-07 17:26:17,144 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements.
[2025-05-07 17:26:17,144 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:17,144 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:17,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-05-07 17:26:17,322 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:17,322 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882332155]
[2025-05-07 17:26:17,322 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882332155] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:17,322 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:17,322 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2025-05-07 17:26:17,322 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022881121]
[2025-05-07 17:26:17,322 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:17,323 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2025-05-07 17:26:17,323 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:17,323 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2025-05-07 17:26:17,323 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2025-05-07 17:26:17,323 INFO  L87              Difference]: Start difference. First operand 93 states and 101 transitions. Second operand  has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (21), 1 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21)
[2025-05-07 17:26:17,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:17,359 INFO  L93              Difference]: Finished difference Result 97 states and 105 transitions.
[2025-05-07 17:26:17,359 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2025-05-07 17:26:17,359 INFO  L79                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (21), 1 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 77
[2025-05-07 17:26:17,360 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:17,360 INFO  L225             Difference]: With dead ends: 97
[2025-05-07 17:26:17,360 INFO  L226             Difference]: Without dead ends: 97
[2025-05-07 17:26:17,360 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 17:26:17,361 INFO  L437           NwaCegarLoop]: 87 mSDtfsCounter, 1 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 337 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 17:26:17,361 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 337 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:26:17,362 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2025-05-07 17:26:17,367 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2025-05-07 17:26:17,367 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 21 states have call predecessors, (26), 28 states have return successors, (34), 30 states have call predecessors, (34), 26 states have call successors, (34)
[2025-05-07 17:26:17,367 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions.
[2025-05-07 17:26:17,368 INFO  L79                 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 77
[2025-05-07 17:26:17,368 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:17,368 INFO  L485      AbstractCegarLoop]: Abstraction has 97 states and 105 transitions.
[2025-05-07 17:26:17,368 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (21), 1 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21)
[2025-05-07 17:26:17,368 INFO  L278                IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions.
[2025-05-07 17:26:17,369 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2025-05-07 17:26:17,369 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:17,369 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:26:17,369 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:26:17,369 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:17,369 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:17,370 INFO  L85        PathProgramCache]: Analyzing trace with hash -927453492, now seen corresponding path program 1 times
[2025-05-07 17:26:17,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:17,370 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533782381]
[2025-05-07 17:26:17,370 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:17,370 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:17,404 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes.
[2025-05-07 17:26:17,418 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements.
[2025-05-07 17:26:17,418 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:17,418 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:17,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2025-05-07 17:26:17,649 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:17,649 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533782381]
[2025-05-07 17:26:17,649 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533782381] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:17,649 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:17,649 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2025-05-07 17:26:17,649 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948639149]
[2025-05-07 17:26:17,649 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:17,650 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2025-05-07 17:26:17,650 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:17,651 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2025-05-07 17:26:17,651 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182
[2025-05-07 17:26:17,651 INFO  L87              Difference]: Start difference. First operand 97 states and 105 transitions. Second operand  has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (21), 1 states have call predecessors, (21), 12 states have return successors, (21), 13 states have call predecessors, (21), 5 states have call successors, (21)
[2025-05-07 17:26:17,822 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:17,822 INFO  L93              Difference]: Finished difference Result 116 states and 127 transitions.
[2025-05-07 17:26:17,822 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2025-05-07 17:26:17,823 INFO  L79                 Accepts]: Start accepts. Automaton has  has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (21), 1 states have call predecessors, (21), 12 states have return successors, (21), 13 states have call predecessors, (21), 5 states have call successors, (21) Word has length 77
[2025-05-07 17:26:17,823 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:17,823 INFO  L225             Difference]: With dead ends: 116
[2025-05-07 17:26:17,824 INFO  L226             Difference]: Without dead ends: 116
[2025-05-07 17:26:17,824 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210
[2025-05-07 17:26:17,824 INFO  L437           NwaCegarLoop]: 76 mSDtfsCounter, 3 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:17,824 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 971 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:26:17,825 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2025-05-07 17:26:17,829 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105.
[2025-05-07 17:26:17,829 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 105 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 26 states have call successors, (26), 21 states have call predecessors, (26), 32 states have return successors, (39), 34 states have call predecessors, (39), 26 states have call successors, (39)
[2025-05-07 17:26:17,830 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions.
[2025-05-07 17:26:17,830 INFO  L79                 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 77
[2025-05-07 17:26:17,830 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:17,830 INFO  L485      AbstractCegarLoop]: Abstraction has 105 states and 114 transitions.
[2025-05-07 17:26:17,831 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (21), 1 states have call predecessors, (21), 12 states have return successors, (21), 13 states have call predecessors, (21), 5 states have call successors, (21)
[2025-05-07 17:26:17,831 INFO  L278                IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions.
[2025-05-07 17:26:17,831 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2025-05-07 17:26:17,831 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:26:17,832 INFO  L218           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:26:17,832 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-05-07 17:26:17,832 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:26:17,832 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:26:17,832 INFO  L85        PathProgramCache]: Analyzing trace with hash 1344821703, now seen corresponding path program 1 times
[2025-05-07 17:26:17,832 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:26:17,832 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999656149]
[2025-05-07 17:26:17,832 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:26:17,832 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:26:17,856 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes.
[2025-05-07 17:26:17,873 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements.
[2025-05-07 17:26:17,874 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:26:17,874 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:26:18,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2025-05-07 17:26:18,127 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:26:18,127 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999656149]
[2025-05-07 17:26:18,127 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999656149] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:26:18,127 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:26:18,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-05-07 17:26:18,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317464908]
[2025-05-07 17:26:18,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:26:18,128 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-05-07 17:26:18,128 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:26:18,129 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-05-07 17:26:18,129 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:26:18,129 INFO  L87              Difference]: Start difference. First operand 105 states and 114 transitions. Second operand  has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (23), 1 states have call predecessors, (23), 7 states have return successors, (26), 7 states have call predecessors, (26), 4 states have call successors, (26)
[2025-05-07 17:26:18,200 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:26:18,200 INFO  L93              Difference]: Finished difference Result 99 states and 111 transitions.
[2025-05-07 17:26:18,200 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-05-07 17:26:18,201 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (23), 1 states have call predecessors, (23), 7 states have return successors, (26), 7 states have call predecessors, (26), 4 states have call successors, (26) Word has length 95
[2025-05-07 17:26:18,201 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:26:18,201 INFO  L225             Difference]: With dead ends: 99
[2025-05-07 17:26:18,201 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:26:18,201 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2025-05-07 17:26:18,202 INFO  L437           NwaCegarLoop]: 94 mSDtfsCounter, 5 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:26:18,202 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 631 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:26:18,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:26:18,203 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:26:18,203 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 17:26:18,203 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:26:18,203 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95
[2025-05-07 17:26:18,203 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:26:18,203 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:26:18,203 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (23), 1 states have call predecessors, (23), 7 states have return successors, (26), 7 states have call predecessors, (26), 4 states have call successors, (26)
[2025-05-07 17:26:18,203 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:26:18,203 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:26:18,205 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:26:18,206 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2025-05-07 17:26:18,208 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2025-05-07 17:26:18,210 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:26:18,212 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:26:18 BoogieIcfgContainer
[2025-05-07 17:26:18,212 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:26:18,213 INFO  L158              Benchmark]: Toolchain (without parser) took 2645.16ms. Allocated memory is still 234.9MB. Free memory was 146.1MB in the beginning and 171.4MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:18,213 INFO  L158              Benchmark]: SmtParser took 0.31ms. Allocated memory is still 234.9MB. Free memory is still 165.7MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:18,213 INFO  L158              Benchmark]: ChcToBoogie took 30.22ms. Allocated memory is still 234.9MB. Free memory was 146.0MB in the beginning and 142.0MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-05-07 17:26:18,213 INFO  L158              Benchmark]: Boogie Preprocessor took 47.92ms. Allocated memory is still 234.9MB. Free memory was 142.0MB in the beginning and 139.0MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:18,214 INFO  L158              Benchmark]: RCFGBuilder took 346.24ms. Allocated memory is still 234.9MB. Free memory was 138.9MB in the beginning and 165.7MB in the end (delta: -26.8MB). Peak memory consumption was 25.6MB. Max. memory is 33.6GB.
[2025-05-07 17:26:18,214 INFO  L158              Benchmark]: TraceAbstraction took 2217.54ms. Allocated memory is still 234.9MB. Free memory was 165.1MB in the beginning and 171.4MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:26:18,214 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.31ms. Allocated memory is still 234.9MB. Free memory is still 165.7MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 30.22ms. Allocated memory is still 234.9MB. Free memory was 146.0MB in the beginning and 142.0MB in the end (delta: 3.9MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * Boogie Preprocessor took 47.92ms. Allocated memory is still 234.9MB. Free memory was 142.0MB in the beginning and 139.0MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 346.24ms. Allocated memory is still 234.9MB. Free memory was 138.9MB in the beginning and 165.7MB in the end (delta: -26.8MB). Peak memory consumption was 25.6MB. Max. memory is 33.6GB.
 * TraceAbstraction took 2217.54ms. Allocated memory is still 234.9MB. Free memory was 165.1MB in the beginning and 171.4MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 23 procedures, 90 locations, 130 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 3300 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2761 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317 IncrementalHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 539 mSDtfsCounter, 317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 549 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 25/25 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 17:26:18,224 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
