./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-185.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:33,811 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:33,903 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffbf4b2-4fa5-4c16-99cb-45f052753238/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:33,911 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:33,911 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:33,947 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:33,948 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:33,948 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:33,949 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:33,949 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:33,949 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:33,949 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:33,949 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:33,950 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:33,950 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:33,951 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:33,952 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:33,952 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:33,953 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:33,953 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:34,305 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:34,316 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:34,319 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:34,322 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:34,323 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:34,324 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffbf4b2-4fa5-4c16-99cb-45f052753238/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-185.smt2
[2025-04-28 21:21:34,326 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:34,330 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:34,819 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ffbf4b2-4fa5-4c16-99cb-45f052753238/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-185.smt2
[2025-04-28 21:21:34,825 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:34,827 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:34,827 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:34,827 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:34,828 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:34,832 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,897 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34 Unit
[2025-04-28 21:21:34,897 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:34,899 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:34,899 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:34,899 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:34,916 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,916 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,964 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,964 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,976 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,977 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,979 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,982 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:34,984 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:35,000 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:35,001 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:35,001 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:35,001 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:35,002 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (1/1) ...
[2025-04-28 21:21:35,005 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:35,019 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:35,038 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2025-04-28 21:21:35,041 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-04-28 21:21:35,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:35,054 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:35,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:35,054 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure error_target_5_0 given in one single declaration
[2025-04-28 21:21:35,054 INFO  L130     BoogieDeclarations]: Found specification of procedure error_target_5_0
[2025-04-28 21:21:35,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure error_target_5_0
[2025-04-28 21:21:35,055 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_4_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,055 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_4_function_f__46_47_0
[2025-04-28 21:21:35,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_4_function_f__46_47_0
[2025-04-28 21:21:35,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_3_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,056 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_3_function_f__46_47_0
[2025-04-28 21:21:35,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_3_function_f__46_47_0
[2025-04-28 21:21:35,056 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_16_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,056 INFO  L130     BoogieDeclarations]: Found specification of procedure block_16_function_f__46_47_0
[2025-04-28 21:21:35,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_16_function_f__46_47_0
[2025-04-28 21:21:35,058 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_14_f_45_47_0 given in one single declaration
[2025-04-28 21:21:35,058 INFO  L130     BoogieDeclarations]: Found specification of procedure block_14_f_45_47_0
[2025-04-28 21:21:35,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_14_f_45_47_0
[2025-04-28 21:21:35,058 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_12_for_header_f_30_47_0 given in one single declaration
[2025-04-28 21:21:35,058 INFO  L130     BoogieDeclarations]: Found specification of procedure block_12_for_header_f_30_47_0
[2025-04-28 21:21:35,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_12_for_header_f_30_47_0
[2025-04-28 21:21:35,058 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_15_for_post_f_28_47_0 given in one single declaration
[2025-04-28 21:21:35,058 INFO  L130     BoogieDeclarations]: Found specification of procedure block_15_for_post_f_28_47_0
[2025-04-28 21:21:35,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_15_for_post_f_28_47_0
[2025-04-28 21:21:35,059 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_13_for_body_f_29_47_0 given in one single declaration
[2025-04-28 21:21:35,059 INFO  L130     BoogieDeclarations]: Found specification of procedure block_13_for_body_f_29_47_0
[2025-04-28 21:21:35,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_13_for_body_f_29_47_0
[2025-04-28 21:21:35,059 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_9_for_body_f_37_47_0 given in one single declaration
[2025-04-28 21:21:35,059 INFO  L130     BoogieDeclarations]: Found specification of procedure block_9_for_body_f_37_47_0
[2025-04-28 21:21:35,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_9_for_body_f_37_47_0
[2025-04-28 21:21:35,059 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_8_for_header_f_38_47_0 given in one single declaration
[2025-04-28 21:21:35,059 INFO  L130     BoogieDeclarations]: Found specification of procedure block_8_for_header_f_38_47_0
[2025-04-28 21:21:35,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_8_for_header_f_38_47_0
[2025-04-28 21:21:35,060 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_11_for_post_f_18_47_0 given in one single declaration
[2025-04-28 21:21:35,060 INFO  L130     BoogieDeclarations]: Found specification of procedure block_11_for_post_f_18_47_0
[2025-04-28 21:21:35,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_11_for_post_f_18_47_0
[2025-04-28 21:21:35,060 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_6_f_45_47_0 given in one single declaration
[2025-04-28 21:21:35,060 INFO  L130     BoogieDeclarations]: Found specification of procedure block_6_f_45_47_0
[2025-04-28 21:21:35,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_6_f_45_47_0
[2025-04-28 21:21:35,061 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_5_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,061 INFO  L130     BoogieDeclarations]: Found specification of procedure block_5_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_5_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_7_return_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,061 INFO  L130     BoogieDeclarations]: Found specification of procedure block_7_return_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_7_return_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_10_f_45_47_0 given in one single declaration
[2025-04-28 21:21:35,061 INFO  L130     BoogieDeclarations]: Found specification of procedure block_10_f_45_47_0
[2025-04-28 21:21:35,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_10_f_45_47_0
[2025-04-28 21:21:35,061 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_17_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,061 INFO  L130     BoogieDeclarations]: Found specification of procedure block_17_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_17_function_f__46_47_0
[2025-04-28 21:21:35,061 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure block_18_function_f__46_47_0 given in one single declaration
[2025-04-28 21:21:35,061 INFO  L130     BoogieDeclarations]: Found specification of procedure block_18_function_f__46_47_0
[2025-04-28 21:21:35,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure block_18_function_f__46_47_0
[2025-04-28 21:21:35,062 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure interface_0_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,062 INFO  L130     BoogieDeclarations]: Found specification of procedure interface_0_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure interface_0_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure summary_constructor_2_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,062 INFO  L130     BoogieDeclarations]: Found specification of procedure summary_constructor_2_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure summary_constructor_2_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_19_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,062 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_19_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_19_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_after_init_21_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,062 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_after_init_21_Simple_47_0
[2025-04-28 21:21:35,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_after_init_21_Simple_47_0
[2025-04-28 21:21:35,063 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure contract_initializer_entry_20_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,063 INFO  L130     BoogieDeclarations]: Found specification of procedure contract_initializer_entry_20_Simple_47_0
[2025-04-28 21:21:35,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure contract_initializer_entry_20_Simple_47_0
[2025-04-28 21:21:35,063 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure implicit_constructor_entry_22_Simple_47_0 given in one single declaration
[2025-04-28 21:21:35,063 INFO  L130     BoogieDeclarations]: Found specification of procedure implicit_constructor_entry_22_Simple_47_0
[2025-04-28 21:21:35,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure implicit_constructor_entry_22_Simple_47_0
[2025-04-28 21:21:35,063 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:35,063 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:35,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:35,315 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:35,319 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:35,688 INFO  L?                        ?]: Removed 141 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:35,688 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:35,708 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:35,709 INFO  L312             CfgBuilder]: Removed 9 assume(true) statements.
[2025-04-28 21:21:35,709 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:35 BoogieIcfgContainer
[2025-04-28 21:21:35,709 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:35,715 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:35,716 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:35,721 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:35,721 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:34" (1/3) ...
[2025-04-28 21:21:35,722 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606b4b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:35, skipping insertion in model container
[2025-04-28 21:21:35,722 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:34" (2/3) ...
[2025-04-28 21:21:35,723 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606b4b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:35, skipping insertion in model container
[2025-04-28 21:21:35,723 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:35" (3/3) ...
[2025-04-28 21:21:35,724 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:35,740 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:35,743 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 25 procedures, 99 locations, 144 edges, 25 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:35,789 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:35,811 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;@5a13c380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:35,811 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:35,817 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 99 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 48 states have internal predecessors, (48), 30 states have call successors, (32), 24 states have call predecessors, (32), 24 states have return successors, (32), 26 states have call predecessors, (32), 30 states have call successors, (32)
[2025-04-28 21:21:35,830 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-04-28 21:21:35,830 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:35,833 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]
[2025-04-28 21:21:35,834 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:35,840 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:35,841 INFO  L85        PathProgramCache]: Analyzing trace with hash 1092878417, now seen corresponding path program 1 times
[2025-04-28 21:21:35,849 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:35,850 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456572955]
[2025-04-28 21:21:35,850 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:35,851 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:35,939 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-04-28 21:21:35,976 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-04-28 21:21:35,977 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:35,977 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:36,410 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:36,411 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:36,411 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456572955]
[2025-04-28 21:21:36,412 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456572955] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:36,412 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:36,415 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:36,416 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145260876]
[2025-04-28 21:21:36,418 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:36,428 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:36,428 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:36,452 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:36,452 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:36,498 INFO  L87              Difference]: Start difference. First operand  has 99 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 48 states have internal predecessors, (48), 30 states have call successors, (32), 24 states have call predecessors, (32), 24 states have return successors, (32), 26 states have call predecessors, (32), 30 states have call successors, (32) 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)
[2025-04-28 21:21:36,583 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:36,584 INFO  L93              Difference]: Finished difference Result 101 states and 114 transitions.
[2025-04-28 21:21:36,586 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:36,587 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
[2025-04-28 21:21:36,588 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:36,602 INFO  L225             Difference]: With dead ends: 101
[2025-04-28 21:21:36,606 INFO  L226             Difference]: Without dead ends: 97
[2025-04-28 21:21:36,608 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
[2025-04-28 21:21:36,617 INFO  L437           NwaCegarLoop]: 110 mSDtfsCounter, 1 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 323 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
[2025-04-28 21:21:36,618 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 323 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:36,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2025-04-28 21:21:36,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95.
[2025-04-28 21:21:36,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 28 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 25 states have call predecessors, (30), 28 states have call successors, (30)
[2025-04-28 21:21:36,698 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions.
[2025-04-28 21:21:36,699 INFO  L79                 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 59
[2025-04-28 21:21:36,700 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:36,700 INFO  L485      AbstractCegarLoop]: Abstraction has 95 states and 105 transitions.
[2025-04-28 21:21:36,700 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)
[2025-04-28 21:21:36,700 INFO  L278                IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions.
[2025-04-28 21:21:36,703 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2025-04-28 21:21:36,703 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:36,703 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]
[2025-04-28 21:21:36,704 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:36,704 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:36,705 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:36,705 INFO  L85        PathProgramCache]: Analyzing trace with hash 918944853, now seen corresponding path program 1 times
[2025-04-28 21:21:36,705 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:36,705 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100393184]
[2025-04-28 21:21:36,706 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:36,706 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:36,769 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes.
[2025-04-28 21:21:36,868 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements.
[2025-04-28 21:21:36,869 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:36,869 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:37,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:37,563 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:37,563 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100393184]
[2025-04-28 21:21:37,564 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100393184] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:37,564 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:37,564 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:37,564 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529185030]
[2025-04-28 21:21:37,564 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:37,567 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:37,567 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:37,569 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:37,569 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:37,570 INFO  L87              Difference]: Start difference. First operand 95 states and 105 transitions. Second operand  has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)
[2025-04-28 21:21:37,650 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:37,650 INFO  L93              Difference]: Finished difference Result 97 states and 107 transitions.
[2025-04-28 21:21:37,654 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:37,655 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), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 59
[2025-04-28 21:21:37,655 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:37,656 INFO  L225             Difference]: With dead ends: 97
[2025-04-28 21:21:37,657 INFO  L226             Difference]: Without dead ends: 97
[2025-04-28 21:21:37,657 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:37,658 INFO  L437           NwaCegarLoop]: 102 mSDtfsCounter, 1 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:37,659 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:37,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2025-04-28 21:21:37,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2025-04-28 21:21:37,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 43 states have (on average 1.069767441860465) internal successors, (46), 46 states have internal predecessors, (46), 28 states have call successors, (30), 24 states have call predecessors, (30), 25 states have return successors, (31), 26 states have call predecessors, (31), 28 states have call successors, (31)
[2025-04-28 21:21:37,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions.
[2025-04-28 21:21:37,671 INFO  L79                 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 59
[2025-04-28 21:21:37,671 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:37,672 INFO  L485      AbstractCegarLoop]: Abstraction has 97 states and 107 transitions.
[2025-04-28 21:21:37,672 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), 3 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)
[2025-04-28 21:21:37,672 INFO  L278                IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions.
[2025-04-28 21:21:37,676 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2025-04-28 21:21:37,676 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:37,676 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:37,677 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:37,677 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:37,678 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:37,678 INFO  L85        PathProgramCache]: Analyzing trace with hash -540595372, now seen corresponding path program 1 times
[2025-04-28 21:21:37,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:37,678 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263216045]
[2025-04-28 21:21:37,678 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:37,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:37,726 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes.
[2025-04-28 21:21:37,774 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements.
[2025-04-28 21:21:37,774 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:37,774 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:37,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:37,998 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:37,998 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263216045]
[2025-04-28 21:21:37,998 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263216045] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:37,998 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:37,998 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:37,999 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402695131]
[2025-04-28 21:21:37,999 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:37,999 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:37,999 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:38,000 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:38,000 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:38,001 INFO  L87              Difference]: Start difference. First operand 97 states and 107 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, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18)
[2025-04-28 21:21:38,062 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:38,063 INFO  L93              Difference]: Finished difference Result 101 states and 111 transitions.
[2025-04-28 21:21:38,063 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:38,064 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, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) Word has length 67
[2025-04-28 21:21:38,064 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:38,065 INFO  L225             Difference]: With dead ends: 101
[2025-04-28 21:21:38,065 INFO  L226             Difference]: Without dead ends: 101
[2025-04-28 21:21:38,066 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:38,067 INFO  L437           NwaCegarLoop]: 102 mSDtfsCounter, 1 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 500 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
[2025-04-28 21:21:38,069 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 500 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:38,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2025-04-28 21:21:38,085 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2025-04-28 21:21:38,086 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 28 states have call successors, (30), 24 states have call predecessors, (30), 27 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33)
[2025-04-28 21:21:38,090 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions.
[2025-04-28 21:21:38,090 INFO  L79                 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 67
[2025-04-28 21:21:38,090 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:38,091 INFO  L485      AbstractCegarLoop]: Abstraction has 101 states and 111 transitions.
[2025-04-28 21:21:38,091 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, (18), 1 states have call predecessors, (18), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18)
[2025-04-28 21:21:38,091 INFO  L278                IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions.
[2025-04-28 21:21:38,093 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2025-04-28 21:21:38,096 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:38,096 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, 1, 1]
[2025-04-28 21:21:38,097 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:21:38,097 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:38,097 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:38,097 INFO  L85        PathProgramCache]: Analyzing trace with hash -2109970399, now seen corresponding path program 1 times
[2025-04-28 21:21:38,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:38,098 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148019707]
[2025-04-28 21:21:38,098 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:38,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:38,146 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes.
[2025-04-28 21:21:38,195 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements.
[2025-04-28 21:21:38,196 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:38,196 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:38,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:21:38,717 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:38,717 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148019707]
[2025-04-28 21:21:38,718 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148019707] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:38,718 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:38,719 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:38,719 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471242652]
[2025-04-28 21:21:38,719 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:38,719 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:38,720 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:38,720 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:38,721 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:38,722 INFO  L87              Difference]: Start difference. First operand 101 states and 111 transitions. Second operand  has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21)
[2025-04-28 21:21:38,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:38,784 INFO  L93              Difference]: Finished difference Result 103 states and 113 transitions.
[2025-04-28 21:21:38,784 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:38,785 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 79
[2025-04-28 21:21:38,785 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:38,787 INFO  L225             Difference]: With dead ends: 103
[2025-04-28 21:21:38,787 INFO  L226             Difference]: Without dead ends: 103
[2025-04-28 21:21:38,787 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:38,788 INFO  L437           NwaCegarLoop]: 102 mSDtfsCounter, 1 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:38,788 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:38,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2025-04-28 21:21:38,802 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103.
[2025-04-28 21:21:38,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103 states, 46 states have (on average 1.065217391304348) internal successors, (49), 49 states have internal predecessors, (49), 28 states have call successors, (30), 24 states have call predecessors, (30), 28 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34)
[2025-04-28 21:21:38,807 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions.
[2025-04-28 21:21:38,810 INFO  L79                 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 79
[2025-04-28 21:21:38,810 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:38,811 INFO  L485      AbstractCegarLoop]: Abstraction has 103 states and 113 transitions.
[2025-04-28 21:21:38,811 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21)
[2025-04-28 21:21:38,811 INFO  L278                IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions.
[2025-04-28 21:21:38,815 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2025-04-28 21:21:38,819 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:38,819 INFO  L218           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:38,819 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-04-28 21:21:38,820 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:38,820 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:38,820 INFO  L85        PathProgramCache]: Analyzing trace with hash 1526304107, now seen corresponding path program 1 times
[2025-04-28 21:21:38,820 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:38,820 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101547419]
[2025-04-28 21:21:38,821 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:38,821 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:38,871 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes.
[2025-04-28 21:21:38,906 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements.
[2025-04-28 21:21:38,906 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:38,907 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:40,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:40,002 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:40,002 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101547419]
[2025-04-28 21:21:40,002 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101547419] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:40,002 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339095019]
[2025-04-28 21:21:40,002 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:40,003 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:40,007 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:40,011 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:40,014 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:40,330 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes.
[2025-04-28 21:21:40,567 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements.
[2025-04-28 21:21:40,568 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:40,568 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:40,574 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 13 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:40,585 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:40,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2025-04-28 21:21:40,829 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:44,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2025-04-28 21:21:44,392 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339095019] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:44,396 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:44,396 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20
[2025-04-28 21:21:44,396 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704940881]
[2025-04-28 21:21:44,396 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:44,397 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2025-04-28 21:21:44,397 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:44,398 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2025-04-28 21:21:44,399 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380
[2025-04-28 21:21:44,402 INFO  L87              Difference]: Start difference. First operand 103 states and 113 transitions. Second operand  has 20 states, 14 states have (on average 4.071428571428571) internal successors, (57), 20 states have internal predecessors, (57), 9 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (36), 14 states have call predecessors, (36), 9 states have call successors, (36)
[2025-04-28 21:21:44,988 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:44,988 INFO  L93              Difference]: Finished difference Result 131 states and 143 transitions.
[2025-04-28 21:21:44,992 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2025-04-28 21:21:44,992 INFO  L79                 Accepts]: Start accepts. Automaton has  has 20 states, 14 states have (on average 4.071428571428571) internal successors, (57), 20 states have internal predecessors, (57), 9 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (36), 14 states have call predecessors, (36), 9 states have call successors, (36) Word has length 90
[2025-04-28 21:21:44,993 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:44,994 INFO  L225             Difference]: With dead ends: 131
[2025-04-28 21:21:44,994 INFO  L226             Difference]: Without dead ends: 131
[2025-04-28 21:21:44,997 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812
[2025-04-28 21:21:44,998 INFO  L437           NwaCegarLoop]: 95 mSDtfsCounter, 13 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:44,999 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1561 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-04-28 21:21:45,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2025-04-28 21:21:45,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131.
[2025-04-28 21:21:45,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 131 states, 60 states have (on average 1.05) internal successors, (63), 63 states have internal predecessors, (63), 28 states have call successors, (30), 24 states have call predecessors, (30), 42 states have return successors, (50), 43 states have call predecessors, (50), 28 states have call successors, (50)
[2025-04-28 21:21:45,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions.
[2025-04-28 21:21:45,024 INFO  L79                 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 90
[2025-04-28 21:21:45,024 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:45,024 INFO  L485      AbstractCegarLoop]: Abstraction has 131 states and 143 transitions.
[2025-04-28 21:21:45,024 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 14 states have (on average 4.071428571428571) internal successors, (57), 20 states have internal predecessors, (57), 9 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (36), 14 states have call predecessors, (36), 9 states have call successors, (36)
[2025-04-28 21:21:45,024 INFO  L278                IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions.
[2025-04-28 21:21:45,026 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2025-04-28 21:21:45,026 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:45,026 INFO  L218           NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:45,037 INFO  L540       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2025-04-28 21:21:45,233 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2025-04-28 21:21:45,233 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:45,234 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:45,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 1893424457, now seen corresponding path program 2 times
[2025-04-28 21:21:45,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:45,234 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736353484]
[2025-04-28 21:21:45,235 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-04-28 21:21:45,235 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:45,286 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes.
[2025-04-28 21:21:45,368 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements.
[2025-04-28 21:21:45,368 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-04-28 21:21:45,368 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:46,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2025-04-28 21:21:46,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:46,344 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736353484]
[2025-04-28 21:21:46,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736353484] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:46,345 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607627272]
[2025-04-28 21:21:46,345 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2025-04-28 21:21:46,345 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:46,348 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:46,352 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:46,355 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-04-28 21:21:46,675 INFO  L108    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes.
[2025-04-28 21:21:46,979 INFO  L111    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements.
[2025-04-28 21:21:46,979 INFO  L114    AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2025-04-28 21:21:46,979 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:46,990 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 18 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:47,002 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:47,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2025-04-28 21:21:47,072 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:55,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 116 backedges. 42 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked.
[2025-04-28 21:21:55,579 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [607627272] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:55,579 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:55,579 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 14
[2025-04-28 21:21:55,580 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946283303]
[2025-04-28 21:21:55,580 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:55,580 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2025-04-28 21:21:55,581 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:55,581 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2025-04-28 21:21:55,581 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2025-04-28 21:21:55,582 INFO  L87              Difference]: Start difference. First operand 131 states and 143 transitions. Second operand  has 14 states, 9 states have (on average 6.222222222222222) internal successors, (56), 14 states have internal predecessors, (56), 7 states have call successors, (30), 1 states have call predecessors, (30), 9 states have return successors, (37), 9 states have call predecessors, (37), 7 states have call successors, (37)
[2025-04-28 21:21:55,739 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:55,739 INFO  L93              Difference]: Finished difference Result 143 states and 155 transitions.
[2025-04-28 21:21:55,740 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2025-04-28 21:21:55,740 INFO  L79                 Accepts]: Start accepts. Automaton has  has 14 states, 9 states have (on average 6.222222222222222) internal successors, (56), 14 states have internal predecessors, (56), 7 states have call successors, (30), 1 states have call predecessors, (30), 9 states have return successors, (37), 9 states have call predecessors, (37), 7 states have call successors, (37) Word has length 143
[2025-04-28 21:21:55,740 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:55,742 INFO  L225             Difference]: With dead ends: 143
[2025-04-28 21:21:55,742 INFO  L226             Difference]: Without dead ends: 143
[2025-04-28 21:21:55,742 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 283 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:55,743 INFO  L437           NwaCegarLoop]: 100 mSDtfsCounter, 6 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:55,743 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 965 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:55,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2025-04-28 21:21:55,752 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143.
[2025-04-28 21:21:55,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 143 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 69 states have internal predecessors, (69), 28 states have call successors, (30), 24 states have call predecessors, (30), 48 states have return successors, (56), 49 states have call predecessors, (56), 28 states have call successors, (56)
[2025-04-28 21:21:55,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions.
[2025-04-28 21:21:55,754 INFO  L79                 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 143
[2025-04-28 21:21:55,755 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:55,755 INFO  L485      AbstractCegarLoop]: Abstraction has 143 states and 155 transitions.
[2025-04-28 21:21:55,755 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 9 states have (on average 6.222222222222222) internal successors, (56), 14 states have internal predecessors, (56), 7 states have call successors, (30), 1 states have call predecessors, (30), 9 states have return successors, (37), 9 states have call predecessors, (37), 7 states have call successors, (37)
[2025-04-28 21:21:55,755 INFO  L278                IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions.
[2025-04-28 21:21:55,757 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2025-04-28 21:21:55,757 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:55,757 INFO  L218           NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:55,766 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2025-04-28 21:21:55,961 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:55,961 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:55,962 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:55,962 INFO  L85        PathProgramCache]: Analyzing trace with hash -1670840269, now seen corresponding path program 1 times
[2025-04-28 21:21:55,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:55,962 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273001910]
[2025-04-28 21:21:55,962 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:55,962 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:56,004 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes.
[2025-04-28 21:21:56,094 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements.
[2025-04-28 21:21:56,094 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:56,094 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:56,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 24 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2025-04-28 21:21:56,936 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:56,936 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273001910]
[2025-04-28 21:21:56,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273001910] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:56,937 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380857326]
[2025-04-28 21:21:56,937 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:56,937 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:56,939 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:56,941 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:56,944 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-04-28 21:21:57,382 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes.
[2025-04-28 21:21:57,700 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements.
[2025-04-28 21:21:57,700 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:57,700 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:57,709 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 23 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:57,714 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:57,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 227 backedges. 76 proven. 35 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked.
[2025-04-28 21:21:57,775 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
