./chc-comp-wrapper.sh ../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/short_circuit_and_need_both.sol_1_no_adts_000.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-05-07 17:29:14,118 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-05-07 17:29:14,154 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e05316-e957-4c31-a232-794d1d070818/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-05-07 17:29:14,157 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-05-07 17:29:14,157 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-05-07 17:29:14,170 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-05-07 17:29:14,170 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-05-07 17:29:14,170 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-05-07 17:29:14,170 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-05-07 17:29:14,170 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-05-07 17:29:14,171 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-05-07 17:29:14,171 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-05-07 17:29:14,171 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:29:14,171 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-05-07 17:29:14,171 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-05-07 17:29:14,172 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-05-07 17:29:14,172 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-05-07 17:29:14,347 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-05-07 17:29:14,354 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-05-07 17:29:14,356 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-05-07 17:29:14,356 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-05-07 17:29:14,357 INFO  L274        PluginConnector]: SmtParser initialized
[2025-05-07 17:29:14,358 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e05316-e957-4c31-a232-794d1d070818/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/short_circuit_and_need_both.sol_1_no_adts_000.smt2
[2025-05-07 17:29:14,359 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-05-07 17:29:14,361 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-05-07 17:29:14,604 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6e05316-e957-4c31-a232-794d1d070818/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp25-benchmarks/solidity/no_adts/unit_tests/control_flow/short_circuit_and_need_both.sol_1_no_adts_000.smt2
[2025-05-07 17:29:14,606 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-05-07 17:29:14,607 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-05-07 17:29:14,608 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-05-07 17:29:14,608 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-05-07 17:29:14,608 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-05-07 17:29:14,610 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,648 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14 Unit
[2025-05-07 17:29:14,648 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-05-07 17:29:14,649 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-05-07 17:29:14,649 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-05-07 17:29:14,649 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-05-07 17:29:14,661 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,661 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,688 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,688 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,695 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,696 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,698 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,701 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,702 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,712 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-05-07 17:29:14,713 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-05-07 17:29:14,713 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-05-07 17:29:14,713 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-05-07 17:29:14,714 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (1/1) ...
[2025-05-07 17:29:14,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-05-07 17:29:14,725 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:29:14,733 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 17:29:14,736 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 17:29:14,743 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-05-07 17:29:14,743 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-05-07 17:29:14,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-05-07 17:29:14,743 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_5_0 given in one single declaration
[2025-05-07 17:29:14,743 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_5_0
[2025-05-07 17:29:14,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_5_0
[2025-05-07 17:29:14,743 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_5_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,743 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_5_function_g__52_53_0
[2025-05-07 17:29:14,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_5_function_g__52_53_0
[2025-05-07 17:29:14,743 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,743 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_g__52_53_0
[2025-05-07 17:29:14,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_g__52_53_0
[2025-05-07 17:29:14,743 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_return_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_return_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_return_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_15_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure block_15_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_15_function_g__52_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_14_function_f__16_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_14_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_14_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__16_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_return_function_f__16_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_return_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_return_function_f__16_53_0
[2025-05-07 17:29:14,744 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_f_15_53_0 given in one single declaration
[2025-05-07 17:29:14,744 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_f_15_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_f_15_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_function_f__16_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_function_f__16_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_function_f__16_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_g_51_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_g_51_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_g_51_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_function_g__52_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_function_g__52_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_13_function_f__16_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_13_function_f__16_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_13_function_f__16_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_18_function_g__52_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure block_18_function_g__52_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_18_function_g__52_53_0
[2025-05-07 17:29:14,745 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_c_53_0 given in one single declaration
[2025-05-07 17:29:14,745 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_c_53_0
[2025-05-07 17:29:14,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_c_53_0 given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_c_53_0
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_19_c_53_0 given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_19_c_53_0
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_19_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_21_c_53_0 given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_21_c_53_0
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_21_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_20_c_53_0 given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_20_c_53_0
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_20_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_22_c_53_0 given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_22_c_53_0
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_22_c_53_0
[2025-05-07 17:29:14,746 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-05-07 17:29:14,746 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-05-07 17:29:14,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-05-07 17:29:14,880 INFO  L234             CfgBuilder]: Building ICFG
[2025-05-07 17:29:14,882 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-05-07 17:29:15,100 INFO  L?                        ?]: Removed 206 outVars from TransFormulas that were not future-live.
[2025-05-07 17:29:15,100 INFO  L283             CfgBuilder]: Performing block encoding
[2025-05-07 17:29:15,108 INFO  L304             CfgBuilder]: Using library mode
[2025-05-07 17:29:15,108 INFO  L312             CfgBuilder]: Removed 12 assume(true) statements.
[2025-05-07 17:29:15,109 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:29:15 BoogieIcfgContainer
[2025-05-07 17:29:15,109 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-05-07 17:29:15,110 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-05-07 17:29:15,110 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-05-07 17:29:15,113 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-05-07 17:29:15,113 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 07.05 05:29:14" (1/3) ...
[2025-05-07 17:29:15,113 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe437a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 07.05 05:29:15, skipping insertion in model container
[2025-05-07 17:29:15,114 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 07.05 05:29:14" (2/3) ...
[2025-05-07 17:29:15,114 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe437a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.05 05:29:15, skipping insertion in model container
[2025-05-07 17:29:15,114 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.05 05:29:15" (3/3) ...
[2025-05-07 17:29:15,115 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-05-07 17:29:15,124 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-05-07 17:29:15,126 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 23 procedures, 96 locations, 155 edges, 23 initial locations, 0 loop locations, and 1 error locations.
[2025-05-07 17:29:15,155 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-05-07 17:29:15,163 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;@4999f2ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-05-07 17:29:15,163 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-05-07 17:29:15,166 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 96 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 36 states have call successors, (38), 22 states have call predecessors, (38), 22 states have return successors, (38), 32 states have call predecessors, (38), 36 states have call successors, (38)
[2025-05-07 17:29:15,172 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-05-07 17:29:15,173 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:15,173 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 17:29:15,173 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:15,177 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:15,177 INFO  L85        PathProgramCache]: Analyzing trace with hash 67641124, now seen corresponding path program 1 times
[2025-05-07 17:29:15,182 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:15,182 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21105018]
[2025-05-07 17:29:15,183 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:15,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:15,232 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-05-07 17:29:15,250 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-05-07 17:29:15,250 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:15,250 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:15,432 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 17:29:15,432 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:15,433 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21105018]
[2025-05-07 17:29:15,433 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21105018] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:15,433 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:15,447 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-05-07 17:29:15,448 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330555547]
[2025-05-07 17:29:15,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:15,452 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-05-07 17:29:15,452 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:15,477 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-05-07 17:29:15,478 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-05-07 17:29:15,480 INFO  L87              Difference]: Start difference. First operand  has 96 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 36 states have call successors, (38), 22 states have call predecessors, (38), 22 states have return successors, (38), 32 states have call predecessors, (38), 36 states have call successors, (38) Second operand  has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:29:15,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:15,528 INFO  L93              Difference]: Finished difference Result 98 states and 119 transitions.
[2025-05-07 17:29:15,530 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-05-07 17:29:15,531 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 65
[2025-05-07 17:29:15,531 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:15,539 INFO  L225             Difference]: With dead ends: 98
[2025-05-07 17:29:15,540 INFO  L226             Difference]: Without dead ends: 94
[2025-05-07 17:29:15,541 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 17:29:15,545 INFO  L437           NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 338 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 17:29:15,545 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 338 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:15,557 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2025-05-07 17:29:15,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92.
[2025-05-07 17:29:15,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 38 states have internal predecessors, (38), 34 states have call successors, (36), 22 states have call predecessors, (36), 22 states have return successors, (36), 31 states have call predecessors, (36), 34 states have call successors, (36)
[2025-05-07 17:29:15,580 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions.
[2025-05-07 17:29:15,581 INFO  L79                 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 65
[2025-05-07 17:29:15,581 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:15,581 INFO  L485      AbstractCegarLoop]: Abstraction has 92 states and 110 transitions.
[2025-05-07 17:29:15,581 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:29:15,581 INFO  L278                IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions.
[2025-05-07 17:29:15,583 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2025-05-07 17:29:15,583 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:15,584 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 17:29:15,584 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-05-07 17:29:15,584 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:15,584 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:15,584 INFO  L85        PathProgramCache]: Analyzing trace with hash 356136480, now seen corresponding path program 1 times
[2025-05-07 17:29:15,584 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:15,584 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197003906]
[2025-05-07 17:29:15,585 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:15,585 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:15,617 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes.
[2025-05-07 17:29:15,650 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements.
[2025-05-07 17:29:15,651 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:15,651 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:15,800 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 17:29:15,800 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:15,800 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197003906]
[2025-05-07 17:29:15,800 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197003906] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:15,800 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:15,800 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-05-07 17:29:15,800 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524504597]
[2025-05-07 17:29:15,801 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:15,802 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-05-07 17:29:15,802 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:15,802 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-05-07 17:29:15,802 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-05-07 17:29:15,802 INFO  L87              Difference]: Start difference. First operand 92 states and 110 transitions. Second operand  has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18)
[2025-05-07 17:29:15,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:15,911 INFO  L93              Difference]: Finished difference Result 93 states and 109 transitions.
[2025-05-07 17:29:15,912 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-05-07 17:29:15,912 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 17:29:15,913 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:15,914 INFO  L225             Difference]: With dead ends: 93
[2025-05-07 17:29:15,914 INFO  L226             Difference]: Without dead ends: 92
[2025-05-07 17:29:15,914 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 17:29:15,915 INFO  L437           NwaCegarLoop]: 100 mSDtfsCounter, 1 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:15,915 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 579 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:29:15,916 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2025-05-07 17:29:15,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90.
[2025-05-07 17:29:15,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 90 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 32 states have call successors, (34), 22 states have call predecessors, (34), 22 states have return successors, (34), 30 states have call predecessors, (34), 32 states have call successors, (34)
[2025-05-07 17:29:15,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions.
[2025-05-07 17:29:15,923 INFO  L79                 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 65
[2025-05-07 17:29:15,924 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:15,924 INFO  L485      AbstractCegarLoop]: Abstraction has 90 states and 105 transitions.
[2025-05-07 17:29:15,924 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 17:29:15,924 INFO  L278                IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions.
[2025-05-07 17:29:15,925 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-05-07 17:29:15,926 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:15,926 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:15,926 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-05-07 17:29:15,926 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:15,926 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:15,926 INFO  L85        PathProgramCache]: Analyzing trace with hash -2091536860, now seen corresponding path program 1 times
[2025-05-07 17:29:15,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:15,926 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968002068]
[2025-05-07 17:29:15,926 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:15,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:15,967 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-05-07 17:29:15,998 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-05-07 17:29:15,998 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:15,998 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:16,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2025-05-07 17:29:16,237 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:16,237 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968002068]
[2025-05-07 17:29:16,237 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968002068] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:16,237 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:16,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:29:16,238 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327835566]
[2025-05-07 17:29:16,238 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:16,238 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:29:16,238 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:16,239 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:29:16,239 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:29:16,240 INFO  L87              Difference]: Start difference. First operand 90 states and 105 transitions. Second operand  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21)
[2025-05-07 17:29:16,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:16,282 INFO  L93              Difference]: Finished difference Result 94 states and 109 transitions.
[2025-05-07 17:29:16,282 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:29:16,283 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21) Word has length 85
[2025-05-07 17:29:16,283 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:16,284 INFO  L225             Difference]: With dead ends: 94
[2025-05-07 17:29:16,284 INFO  L226             Difference]: Without dead ends: 94
[2025-05-07 17:29:16,284 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 17:29:16,285 INFO  L437           NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:16,285 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 502 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:16,285 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2025-05-07 17:29:16,290 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2025-05-07 17:29:16,290 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 32 states have call successors, (34), 22 states have call predecessors, (34), 24 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36)
[2025-05-07 17:29:16,290 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions.
[2025-05-07 17:29:16,291 INFO  L79                 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 85
[2025-05-07 17:29:16,291 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:16,291 INFO  L485      AbstractCegarLoop]: Abstraction has 94 states and 109 transitions.
[2025-05-07 17:29:16,291 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21)
[2025-05-07 17:29:16,292 INFO  L278                IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions.
[2025-05-07 17:29:16,293 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2025-05-07 17:29:16,293 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:16,293 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:16,293 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-05-07 17:29:16,293 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:16,293 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:16,294 INFO  L85        PathProgramCache]: Analyzing trace with hash -1944450294, now seen corresponding path program 1 times
[2025-05-07 17:29:16,294 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:16,294 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045711593]
[2025-05-07 17:29:16,294 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:16,294 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:16,330 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes.
[2025-05-07 17:29:16,346 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements.
[2025-05-07 17:29:16,346 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:16,346 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:16,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2025-05-07 17:29:16,467 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:16,467 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045711593]
[2025-05-07 17:29:16,467 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045711593] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:16,467 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:16,467 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2025-05-07 17:29:16,467 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083074239]
[2025-05-07 17:29:16,467 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:16,467 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2025-05-07 17:29:16,467 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:16,468 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2025-05-07 17:29:16,468 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2025-05-07 17:29:16,468 INFO  L87              Difference]: Start difference. First operand 94 states and 109 transitions. Second operand  has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 1 states have call predecessors, (21), 6 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23)
[2025-05-07 17:29:16,535 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:16,535 INFO  L93              Difference]: Finished difference Result 93 states and 106 transitions.
[2025-05-07 17:29:16,536 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2025-05-07 17:29:16,536 INFO  L79                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 1 states have call predecessors, (21), 6 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) Word has length 82
[2025-05-07 17:29:16,536 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:16,537 INFO  L225             Difference]: With dead ends: 93
[2025-05-07 17:29:16,537 INFO  L226             Difference]: Without dead ends: 91
[2025-05-07 17:29:16,537 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 17:29:16,537 INFO  L437           NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:16,538 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:29:16,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2025-05-07 17:29:16,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91.
[2025-05-07 17:29:16,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 37 states have (on average 1.027027027027027) internal successors, (38), 38 states have internal predecessors, (38), 29 states have call successors, (31), 22 states have call predecessors, (31), 24 states have return successors, (33), 30 states have call predecessors, (33), 29 states have call successors, (33)
[2025-05-07 17:29:16,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions.
[2025-05-07 17:29:16,542 INFO  L79                 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 82
[2025-05-07 17:29:16,542 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:16,542 INFO  L485      AbstractCegarLoop]: Abstraction has 91 states and 102 transitions.
[2025-05-07 17:29:16,543 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (21), 1 states have call predecessors, (21), 6 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23)
[2025-05-07 17:29:16,543 INFO  L278                IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions.
[2025-05-07 17:29:16,543 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-05-07 17:29:16,543 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:16,543 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:16,544 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-05-07 17:29:16,544 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:16,544 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:16,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 793507816, now seen corresponding path program 1 times
[2025-05-07 17:29:16,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:16,544 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288766030]
[2025-05-07 17:29:16,544 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:16,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:16,575 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-05-07 17:29:16,590 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-05-07 17:29:16,590 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:16,590 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:17,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2025-05-07 17:29:17,347 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:17,347 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288766030]
[2025-05-07 17:29:17,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288766030] provided 0 perfect and 1 imperfect interpolant sequences
[2025-05-07 17:29:17,347 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292960701]
[2025-05-07 17:29:17,347 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:17,347 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-05-07 17:29:17,350 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-05-07 17:29:17,352 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-05-07 17:29:17,353 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-05-07 17:29:17,586 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-05-07 17:29:17,726 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-05-07 17:29:17,726 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:17,726 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:17,733 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 41 conjuncts are in the unsatisfiable core
[2025-05-07 17:29:17,743 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-05-07 17:29:17,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2025-05-07 17:29:17,986 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-05-07 17:29:21,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2025-05-07 17:29:21,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292960701] provided 0 perfect and 2 imperfect interpolant sequences
[2025-05-07 17:29:21,668 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-05-07 17:29:21,668 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18
[2025-05-07 17:29:21,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190272075]
[2025-05-07 17:29:21,668 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-05-07 17:29:21,669 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2025-05-07 17:29:21,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:21,669 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2025-05-07 17:29:21,669 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306
[2025-05-07 17:29:21,670 INFO  L87              Difference]: Start difference. First operand 91 states and 102 transitions. Second operand  has 18 states, 11 states have (on average 4.090909090909091) internal successors, (45), 15 states have internal predecessors, (45), 13 states have call successors, (31), 2 states have call predecessors, (31), 11 states have return successors, (35), 14 states have call predecessors, (35), 13 states have call successors, (35)
[2025-05-07 17:29:21,800 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:21,800 INFO  L93              Difference]: Finished difference Result 88 states and 97 transitions.
[2025-05-07 17:29:21,801 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-05-07 17:29:21,801 INFO  L79                 Accepts]: Start accepts. Automaton has  has 18 states, 11 states have (on average 4.090909090909091) internal successors, (45), 15 states have internal predecessors, (45), 13 states have call successors, (31), 2 states have call predecessors, (31), 11 states have return successors, (35), 14 states have call predecessors, (35), 13 states have call successors, (35) Word has length 85
[2025-05-07 17:29:21,801 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:21,802 INFO  L225             Difference]: With dead ends: 88
[2025-05-07 17:29:21,802 INFO  L226             Difference]: Without dead ends: 85
[2025-05-07 17:29:21,802 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420
[2025-05-07 17:29:21,802 INFO  L437           NwaCegarLoop]: 84 mSDtfsCounter, 1 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-05-07 17:29:21,803 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 895 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-05-07 17:29:21,803 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2025-05-07 17:29:21,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2025-05-07 17:29:21,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 26 states have call successors, (27), 21 states have call predecessors, (27), 23 states have return successors, (29), 27 states have call predecessors, (29), 26 states have call successors, (29)
[2025-05-07 17:29:21,807 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions.
[2025-05-07 17:29:21,807 INFO  L79                 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 85
[2025-05-07 17:29:21,807 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:21,807 INFO  L485      AbstractCegarLoop]: Abstraction has 85 states and 92 transitions.
[2025-05-07 17:29:21,807 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 11 states have (on average 4.090909090909091) internal successors, (45), 15 states have internal predecessors, (45), 13 states have call successors, (31), 2 states have call predecessors, (31), 11 states have return successors, (35), 14 states have call predecessors, (35), 13 states have call successors, (35)
[2025-05-07 17:29:21,807 INFO  L278                IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions.
[2025-05-07 17:29:21,808 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2025-05-07 17:29:21,808 INFO  L210           NwaCegarLoop]: Found error trace
[2025-05-07 17:29:21,808 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:21,814 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-05-07 17:29:22,009 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2025-05-07 17:29:22,009 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-05-07 17:29:22,010 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-05-07 17:29:22,010 INFO  L85        PathProgramCache]: Analyzing trace with hash -1074280270, now seen corresponding path program 1 times
[2025-05-07 17:29:22,010 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-05-07 17:29:22,010 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118933802]
[2025-05-07 17:29:22,010 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-05-07 17:29:22,010 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-05-07 17:29:22,058 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes.
[2025-05-07 17:29:22,071 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements.
[2025-05-07 17:29:22,071 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-05-07 17:29:22,071 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-05-07 17:29:22,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2025-05-07 17:29:22,147 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-05-07 17:29:22,147 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118933802]
[2025-05-07 17:29:22,147 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118933802] provided 1 perfect and 0 imperfect interpolant sequences
[2025-05-07 17:29:22,147 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-05-07 17:29:22,147 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-05-07 17:29:22,147 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588728148]
[2025-05-07 17:29:22,147 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-05-07 17:29:22,148 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-05-07 17:29:22,148 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-05-07 17:29:22,149 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-05-07 17:29:22,149 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-05-07 17:29:22,149 INFO  L87              Difference]: Start difference. First operand 85 states and 92 transitions. Second operand  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21)
[2025-05-07 17:29:22,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-05-07 17:29:22,175 INFO  L93              Difference]: Finished difference Result 79 states and 86 transitions.
[2025-05-07 17:29:22,176 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-05-07 17:29:22,176 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21) Word has length 85
[2025-05-07 17:29:22,176 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-05-07 17:29:22,176 INFO  L225             Difference]: With dead ends: 79
[2025-05-07 17:29:22,176 INFO  L226             Difference]: Without dead ends: 0
[2025-05-07 17:29:22,176 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 17:29:22,177 INFO  L437           NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 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 17:29:22,177 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-05-07 17:29:22,177 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-05-07 17:29:22,177 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-05-07 17:29:22,178 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 17:29:22,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-05-07 17:29:22,178 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85
[2025-05-07 17:29:22,178 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-05-07 17:29:22,178 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-05-07 17:29:22,178 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (21), 6 states have call predecessors, (21), 3 states have call successors, (21)
[2025-05-07 17:29:22,178 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-05-07 17:29:22,178 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-05-07 17:29:22,180 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-05-07 17:29:22,180 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2025-05-07 17:29:22,182 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2025-05-07 17:29:22,184 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-05-07 17:29:22,186 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.05 05:29:22 BoogieIcfgContainer
[2025-05-07 17:29:22,186 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-05-07 17:29:22,187 INFO  L158              Benchmark]: Toolchain (without parser) took 7580.01ms. Allocated memory is still 234.9MB. Free memory was 146.9MB in the beginning and 69.7MB in the end (delta: 77.2MB). Peak memory consumption was 67.9MB. Max. memory is 33.6GB.
[2025-05-07 17:29:22,187 INFO  L158              Benchmark]: SmtParser took 0.26ms. Allocated memory is still 234.9MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:22,187 INFO  L158              Benchmark]: ChcToBoogie took 41.05ms. Allocated memory is still 234.9MB. Free memory was 146.9MB in the beginning and 143.9MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:22,187 INFO  L158              Benchmark]: Boogie Preprocessor took 63.21ms. Allocated memory is still 234.9MB. Free memory was 143.8MB in the beginning and 140.6MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-05-07 17:29:22,188 INFO  L158              Benchmark]: RCFGBuilder took 395.86ms. Allocated memory is still 234.9MB. Free memory was 140.4MB in the beginning and 173.8MB in the end (delta: -33.4MB). Peak memory consumption was 25.4MB. Max. memory is 33.6GB.
[2025-05-07 17:29:22,188 INFO  L158              Benchmark]: TraceAbstraction took 7076.43ms. Allocated memory is still 234.9MB. Free memory was 173.3MB in the beginning and 69.7MB in the end (delta: 103.6MB). Peak memory consumption was 92.9MB. Max. memory is 33.6GB.
[2025-05-07 17:29:22,188 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.26ms. Allocated memory is still 234.9MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 41.05ms. Allocated memory is still 234.9MB. Free memory was 146.9MB in the beginning and 143.9MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 63.21ms. Allocated memory is still 234.9MB. Free memory was 143.8MB in the beginning and 140.6MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 395.86ms. Allocated memory is still 234.9MB. Free memory was 140.4MB in the beginning and 173.8MB in the end (delta: -33.4MB). Peak memory consumption was 25.4MB. Max. memory is 33.6GB.
 * TraceAbstraction took 7076.43ms. Allocated memory is still 234.9MB. Free memory was 173.3MB in the beginning and 69.7MB in the end (delta: 103.6MB). Peak memory consumption was 92.9MB. 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, 96 locations, 155 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 3264 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2685 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 251 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 579 mSDtfsCounter, 251 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 171 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 987 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1236 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 63/78 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 17:29:22,204 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
