./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 826ab2ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-826ab2b
[2024-11-13 15:40:57,860 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-13 15:40:57,953 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-13 15:40:57,965 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-13 15:40:57,966 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-13 15:40:58,013 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-13 15:40:58,015 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-13 15:40:58,015 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-13 15:40:58,016 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-13 15:40:58,016 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-13 15:40:58,017 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-13 15:40:58,018 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-13 15:40:58,018 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-13 15:40:58,019 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-13 15:40:58,019 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-13 15:40:58,019 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-13 15:40:58,019 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-13 15:40:58,019 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-13 15:40:58,020 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-13 15:40:58,021 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-13 15:40:58,021 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-13 15:40:58,021 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-13 15:40:58,022 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b
[2024-11-13 15:40:58,417 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-13 15:40:58,431 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-13 15:40:58,436 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-13 15:40:58,437 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-13 15:40:58,438 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-13 15:40:58,439 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c
Unable to find full path for "g++"
[2024-11-13 15:41:00,918 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-13 15:41:01,682 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-13 15:41:01,683 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c
[2024-11-13 15:41:01,729 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/ad7c28dd2/e692e2a3b49e4c9e87b721ccf7283ede/FLAGadc8c966b
[2024-11-13 15:41:01,758 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/data/ad7c28dd2/e692e2a3b49e4c9e87b721ccf7283ede
[2024-11-13 15:41:01,762 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-13 15:41:01,765 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-13 15:41:01,768 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-13 15:41:01,769 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-13 15:41:01,775 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-13 15:41:01,777 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:41:01" (1/1) ...
[2024-11-13 15:41:01,778 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d2ea6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:01, skipping insertion in model container
[2024-11-13 15:41:01,778 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:41:01" (1/1) ...
[2024-11-13 15:41:01,945 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-13 15:41:02,338 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104]
[2024-11-13 15:41:03,624 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-13 15:41:03,640 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-13 15:41:03,702 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104]
[2024-11-13 15:41:04,484 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-13 15:41:04,533 INFO  L204         MainTranslator]: Completed translation
[2024-11-13 15:41:04,535 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04 WrapperNode
[2024-11-13 15:41:04,537 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-13 15:41:04,539 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-13 15:41:04,540 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-13 15:41:04,540 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-13 15:41:04,546 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:04,647 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:05,555 INFO  L138                Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586
[2024-11-13 15:41:05,560 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-13 15:41:05,561 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-13 15:41:05,561 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-13 15:41:05,561 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-13 15:41:05,589 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:05,592 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:05,809 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,400 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-13 15:41:06,400 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,401 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,777 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,844 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,940 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:06,962 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:07,050 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-13 15:41:07,053 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-13 15:41:07,054 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-13 15:41:07,054 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-13 15:41:07,056 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (1/1) ...
[2024-11-13 15:41:07,072 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-13 15:41:07,101 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 15:41:07,121 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-13 15:41:07,126 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-13 15:41:07,168 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-13 15:41:07,169 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-13 15:41:07,169 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-13 15:41:07,169 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-13 15:41:07,313 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-13 15:41:07,316 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-13 15:41:17,664 INFO  L?                        ?]: Removed 738 outVars from TransFormulas that were not future-live.
[2024-11-13 15:41:17,664 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-13 15:41:17,714 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-13 15:41:17,714 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-13 15:41:17,715 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:41:17 BoogieIcfgContainer
[2024-11-13 15:41:17,717 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-13 15:41:17,722 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-13 15:41:17,722 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-13 15:41:17,732 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-13 15:41:17,733 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:41:01" (1/3) ...
[2024-11-13 15:41:17,733 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:41:17, skipping insertion in model container
[2024-11-13 15:41:17,734 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:41:04" (2/3) ...
[2024-11-13 15:41:17,734 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66de90fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:41:17, skipping insertion in model container
[2024-11-13 15:41:17,734 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:41:17" (3/3) ...
[2024-11-13 15:41:17,739 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem13_label52.c
[2024-11-13 15:41:17,759 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-13 15:41:17,765 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label52.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-13 15:41:17,875 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-13 15:41:17,889 INFO  L333      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=LoopHeads, 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;@2a4cc492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-13 15:41:17,890 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-13 15:41:17,898 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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)
[2024-11-13 15:41:17,908 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-11-13 15:41:17,908 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:41:17,909 INFO  L215           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]
[2024-11-13 15:41:17,909 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:41:17,914 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:41:17,915 INFO  L85        PathProgramCache]: Analyzing trace with hash 1474291506, now seen corresponding path program 1 times
[2024-11-13 15:41:17,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:41:17,925 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120662578]
[2024-11-13 15:41:17,925 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:41:17,926 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:41:18,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:41:18,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 15:41:18,976 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:41:18,977 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120662578]
[2024-11-13 15:41:18,981 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120662578] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:41:18,981 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:41:18,981 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:41:18,983 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360830421]
[2024-11-13 15:41:18,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:41:18,989 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-13 15:41:18,989 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:41:19,018 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-13 15:41:19,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:41:19,027 INFO  L87              Difference]: Start difference. First operand  has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) Second operand  has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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)
[2024-11-13 15:41:30,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:41:30,382 INFO  L93              Difference]: Finished difference Result 3829 states and 7206 transitions.
[2024-11-13 15:41:30,384 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-13 15:41:30,385 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) Word has length 64
[2024-11-13 15:41:30,386 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:41:30,416 INFO  L225             Difference]: With dead ends: 3829
[2024-11-13 15:41:30,417 INFO  L226             Difference]: Without dead ends: 2664
[2024-11-13 15:41:30,425 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-13 15:41:30,428 INFO  L432           NwaCegarLoop]: 762 mSDtfsCounter, 2665 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time
[2024-11-13 15:41:30,429 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 1069 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time]
[2024-11-13 15:41:30,454 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2664 states.
[2024-11-13 15:41:30,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663.
[2024-11-13 15:41:30,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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)
[2024-11-13 15:41:30,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions.
[2024-11-13 15:41:30,664 INFO  L78                 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 64
[2024-11-13 15:41:30,665 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:41:30,665 INFO  L471      AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions.
[2024-11-13 15:41:30,665 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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)
[2024-11-13 15:41:30,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions.
[2024-11-13 15:41:30,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 190
[2024-11-13 15:41:30,673 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:41:30,673 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:41:30,674 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-13 15:41:30,674 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:41:30,675 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:41:30,675 INFO  L85        PathProgramCache]: Analyzing trace with hash 1272490012, now seen corresponding path program 1 times
[2024-11-13 15:41:30,675 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:41:30,676 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335143680]
[2024-11-13 15:41:30,676 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:41:30,676 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:41:30,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:41:31,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 15:41:31,347 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:41:31,347 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335143680]
[2024-11-13 15:41:31,347 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335143680] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:41:31,347 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:41:31,347 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:41:31,348 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239298757]
[2024-11-13 15:41:31,348 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:41:31,349 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-13 15:41:31,350 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:41:31,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-13 15:41:31,351 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:41:31,351 INFO  L87              Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand  has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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)
[2024-11-13 15:41:42,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:41:42,379 INFO  L93              Difference]: Finished difference Result 7866 states and 12670 transitions.
[2024-11-13 15:41:42,379 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-13 15:41:42,380 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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) Word has length 189
[2024-11-13 15:41:42,380 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:41:42,407 INFO  L225             Difference]: With dead ends: 7866
[2024-11-13 15:41:42,407 INFO  L226             Difference]: Without dead ends: 5992
[2024-11-13 15:41:42,411 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:41:42,412 INFO  L432           NwaCegarLoop]: 894 mSDtfsCounter, 1694 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5285 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time
[2024-11-13 15:41:42,413 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 1070 Invalid, 6127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [842 Valid, 5285 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time]
[2024-11-13 15:41:42,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5992 states.
[2024-11-13 15:41:42,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 5859.
[2024-11-13 15:41:42,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5859 states, 5858 states have (on average 1.4453738477296005) internal successors, (8467), 5858 states have internal predecessors, (8467), 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)
[2024-11-13 15:41:42,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8467 transitions.
[2024-11-13 15:41:42,585 INFO  L78                 Accepts]: Start accepts. Automaton has 5859 states and 8467 transitions. Word has length 189
[2024-11-13 15:41:42,586 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:41:42,586 INFO  L471      AbstractCegarLoop]: Abstraction has 5859 states and 8467 transitions.
[2024-11-13 15:41:42,587 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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)
[2024-11-13 15:41:42,587 INFO  L276                IsEmpty]: Start isEmpty. Operand 5859 states and 8467 transitions.
[2024-11-13 15:41:42,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2024-11-13 15:41:42,602 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:41:42,603 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:41:42,603 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-13 15:41:42,603 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:41:42,604 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:41:42,607 INFO  L85        PathProgramCache]: Analyzing trace with hash -1018452695, now seen corresponding path program 1 times
[2024-11-13 15:41:42,608 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:41:42,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041591004]
[2024-11-13 15:41:42,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:41:42,608 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:41:42,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:41:43,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2024-11-13 15:41:43,188 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:41:43,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041591004]
[2024-11-13 15:41:43,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041591004] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:41:43,189 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:41:43,189 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-13 15:41:43,189 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910690976]
[2024-11-13 15:41:43,189 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:41:43,190 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:41:43,190 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:41:43,193 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:41:43,194 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:41:43,194 INFO  L87              Difference]: Start difference. First operand 5859 states and 8467 transitions. Second operand  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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)
[2024-11-13 15:41:49,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:41:49,794 INFO  L93              Difference]: Finished difference Result 15687 states and 23393 transitions.
[2024-11-13 15:41:49,794 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:41:49,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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) Word has length 231
[2024-11-13 15:41:49,796 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:41:49,881 INFO  L225             Difference]: With dead ends: 15687
[2024-11-13 15:41:49,882 INFO  L226             Difference]: Without dead ends: 10617
[2024-11-13 15:41:49,889 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:41:49,893 INFO  L432           NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2024-11-13 15:41:49,898 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2024-11-13 15:41:49,916 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10617 states.
[2024-11-13 15:41:50,112 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608.
[2024-11-13 15:41:50,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10608 states, 10607 states have (on average 1.3553313849344772) internal successors, (14376), 10607 states have internal predecessors, (14376), 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)
[2024-11-13 15:41:50,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14376 transitions.
[2024-11-13 15:41:50,155 INFO  L78                 Accepts]: Start accepts. Automaton has 10608 states and 14376 transitions. Word has length 231
[2024-11-13 15:41:50,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:41:50,157 INFO  L471      AbstractCegarLoop]: Abstraction has 10608 states and 14376 transitions.
[2024-11-13 15:41:50,158 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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)
[2024-11-13 15:41:50,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 10608 states and 14376 transitions.
[2024-11-13 15:41:50,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2024-11-13 15:41:50,165 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:41:50,166 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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]
[2024-11-13 15:41:50,166 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-13 15:41:50,166 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:41:50,167 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:41:50,167 INFO  L85        PathProgramCache]: Analyzing trace with hash -2043984442, now seen corresponding path program 1 times
[2024-11-13 15:41:50,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:41:50,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021523128]
[2024-11-13 15:41:50,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:41:50,168 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:41:50,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:41:50,609 INFO  L134       CoverageAnalysis]: Checked inductivity of 207 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-13 15:41:50,612 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:41:50,612 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021523128]
[2024-11-13 15:41:50,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021523128] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:41:50,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:41:50,612 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-13 15:41:50,613 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908737574]
[2024-11-13 15:41:50,613 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:41:50,613 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:41:50,613 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:41:50,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:41:50,614 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:41:50,617 INFO  L87              Difference]: Start difference. First operand 10608 states and 14376 transitions. Second operand  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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)
[2024-11-13 15:41:55,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:41:55,647 INFO  L93              Difference]: Finished difference Result 29087 states and 40058 transitions.
[2024-11-13 15:41:55,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:41:55,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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) Word has length 245
[2024-11-13 15:41:55,649 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:41:55,738 INFO  L225             Difference]: With dead ends: 29087
[2024-11-13 15:41:55,739 INFO  L226             Difference]: Without dead ends: 19268
[2024-11-13 15:41:55,752 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:41:55,755 INFO  L432           NwaCegarLoop]: 839 mSDtfsCounter, 886 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time
[2024-11-13 15:41:55,757 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time]
[2024-11-13 15:41:55,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19268 states.
[2024-11-13 15:41:56,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 18479.
[2024-11-13 15:41:56,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18479 states, 18478 states have (on average 1.2594977811451455) internal successors, (23273), 18478 states have internal predecessors, (23273), 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)
[2024-11-13 15:41:56,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18479 states to 18479 states and 23273 transitions.
[2024-11-13 15:41:56,209 INFO  L78                 Accepts]: Start accepts. Automaton has 18479 states and 23273 transitions. Word has length 245
[2024-11-13 15:41:56,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:41:56,210 INFO  L471      AbstractCegarLoop]: Abstraction has 18479 states and 23273 transitions.
[2024-11-13 15:41:56,210 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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)
[2024-11-13 15:41:56,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 18479 states and 23273 transitions.
[2024-11-13 15:41:56,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 262
[2024-11-13 15:41:56,216 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:41:56,216 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2024-11-13 15:41:56,217 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-13 15:41:56,217 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:41:56,217 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:41:56,218 INFO  L85        PathProgramCache]: Analyzing trace with hash 1669838750, now seen corresponding path program 1 times
[2024-11-13 15:41:56,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:41:56,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689788465]
[2024-11-13 15:41:56,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:41:56,219 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:41:56,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:41:56,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 15:41:56,683 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:41:56,683 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689788465]
[2024-11-13 15:41:56,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689788465] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:41:56,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:41:56,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:41:56,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990136984]
[2024-11-13 15:41:56,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:41:56,684 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-13 15:41:56,685 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:41:56,685 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-13 15:41:56,685 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:41:56,686 INFO  L87              Difference]: Start difference. First operand 18479 states and 23273 transitions. Second operand  has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2024-11-13 15:42:07,678 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:07,678 INFO  L93              Difference]: Finished difference Result 48973 states and 63007 transitions.
[2024-11-13 15:42:07,679 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-13 15:42:07,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) Word has length 261
[2024-11-13 15:42:07,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:07,779 INFO  L225             Difference]: With dead ends: 48973
[2024-11-13 15:42:07,779 INFO  L226             Difference]: Without dead ends: 31283
[2024-11-13 15:42:07,799 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:42:07,800 INFO  L432           NwaCegarLoop]: 640 mSDtfsCounter, 1735 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6141 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 7270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 6141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:07,801 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 841 Invalid, 7270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 6141 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time]
[2024-11-13 15:42:07,837 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31283 states.
[2024-11-13 15:42:08,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31283 to 30374.
[2024-11-13 15:42:08,318 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30374 states, 30373 states have (on average 1.2605274421361077) internal successors, (38286), 30373 states have internal predecessors, (38286), 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)
[2024-11-13 15:42:08,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30374 states to 30374 states and 38286 transitions.
[2024-11-13 15:42:08,371 INFO  L78                 Accepts]: Start accepts. Automaton has 30374 states and 38286 transitions. Word has length 261
[2024-11-13 15:42:08,371 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:08,372 INFO  L471      AbstractCegarLoop]: Abstraction has 30374 states and 38286 transitions.
[2024-11-13 15:42:08,373 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2024-11-13 15:42:08,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 30374 states and 38286 transitions.
[2024-11-13 15:42:08,379 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2024-11-13 15:42:08,379 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:08,380 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2024-11-13 15:42:08,380 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-13 15:42:08,381 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:08,381 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:08,381 INFO  L85        PathProgramCache]: Analyzing trace with hash 1421653317, now seen corresponding path program 1 times
[2024-11-13 15:42:08,381 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:08,382 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780004462]
[2024-11-13 15:42:08,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:08,382 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:08,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:09,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-13 15:42:09,176 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:09,176 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780004462]
[2024-11-13 15:42:09,177 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780004462] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:09,177 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:42:09,177 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:42:09,177 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270422410]
[2024-11-13 15:42:09,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:09,178 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:42:09,178 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:09,179 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:42:09,179 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:09,179 INFO  L87              Difference]: Start difference. First operand 30374 states and 38286 transitions. Second operand  has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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)
[2024-11-13 15:42:16,041 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:16,041 INFO  L93              Difference]: Finished difference Result 89095 states and 112689 transitions.
[2024-11-13 15:42:16,042 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:42:16,043 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) Word has length 271
[2024-11-13 15:42:16,044 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:16,220 INFO  L225             Difference]: With dead ends: 89095
[2024-11-13 15:42:16,220 INFO  L226             Difference]: Without dead ends: 59510
[2024-11-13 15:42:16,262 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:16,263 INFO  L432           NwaCegarLoop]: 894 mSDtfsCounter, 817 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:16,265 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1011 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time]
[2024-11-13 15:42:16,338 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59510 states.
[2024-11-13 15:42:17,092 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59510 to 57136.
[2024-11-13 15:42:17,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57136 states, 57135 states have (on average 1.2027128730200403) internal successors, (68717), 57135 states have internal predecessors, (68717), 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)
[2024-11-13 15:42:17,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57136 states to 57136 states and 68717 transitions.
[2024-11-13 15:42:17,289 INFO  L78                 Accepts]: Start accepts. Automaton has 57136 states and 68717 transitions. Word has length 271
[2024-11-13 15:42:17,289 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:17,290 INFO  L471      AbstractCegarLoop]: Abstraction has 57136 states and 68717 transitions.
[2024-11-13 15:42:17,290 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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)
[2024-11-13 15:42:17,290 INFO  L276                IsEmpty]: Start isEmpty. Operand 57136 states and 68717 transitions.
[2024-11-13 15:42:17,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 362
[2024-11-13 15:42:17,308 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:17,308 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-13 15:42:17,308 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-13 15:42:17,309 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:17,309 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:17,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 792076322, now seen corresponding path program 1 times
[2024-11-13 15:42:17,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:17,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541041408]
[2024-11-13 15:42:17,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:17,311 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:17,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:18,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 449 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:42:18,381 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:18,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541041408]
[2024-11-13 15:42:18,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541041408] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:18,381 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:42:18,381 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:42:18,382 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792849761]
[2024-11-13 15:42:18,382 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:18,384 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-13 15:42:18,385 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:18,386 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-13 15:42:18,386 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:42:18,386 INFO  L87              Difference]: Start difference. First operand 57136 states and 68717 transitions. Second operand  has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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)
[2024-11-13 15:42:27,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:27,907 INFO  L93              Difference]: Finished difference Result 121375 states and 145200 transitions.
[2024-11-13 15:42:27,907 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-13 15:42:27,907 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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) Word has length 361
[2024-11-13 15:42:27,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:27,987 INFO  L225             Difference]: With dead ends: 121375
[2024-11-13 15:42:27,987 INFO  L226             Difference]: Without dead ends: 65028
[2024-11-13 15:42:28,027 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-13 15:42:28,028 INFO  L432           NwaCegarLoop]: 929 mSDtfsCounter, 1636 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 5040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:28,029 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 1077 Invalid, 5040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time]
[2024-11-13 15:42:28,088 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65028 states.
[2024-11-13 15:42:29,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65028 to 65006.
[2024-11-13 15:42:29,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65006 states, 65005 states have (on average 1.1791554495808014) internal successors, (76651), 65005 states have internal predecessors, (76651), 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)
[2024-11-13 15:42:29,242 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65006 states to 65006 states and 76651 transitions.
[2024-11-13 15:42:29,243 INFO  L78                 Accepts]: Start accepts. Automaton has 65006 states and 76651 transitions. Word has length 361
[2024-11-13 15:42:29,245 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:29,245 INFO  L471      AbstractCegarLoop]: Abstraction has 65006 states and 76651 transitions.
[2024-11-13 15:42:29,245 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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)
[2024-11-13 15:42:29,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 65006 states and 76651 transitions.
[2024-11-13 15:42:29,257 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 382
[2024-11-13 15:42:29,257 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:29,258 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-13 15:42:29,258 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-13 15:42:29,258 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:29,259 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:29,259 INFO  L85        PathProgramCache]: Analyzing trace with hash 1921136025, now seen corresponding path program 1 times
[2024-11-13 15:42:29,259 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:29,259 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540808502]
[2024-11-13 15:42:29,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:29,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:29,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:29,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 464 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:42:29,550 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:29,550 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540808502]
[2024-11-13 15:42:29,550 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540808502] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:29,550 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:42:29,550 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:42:29,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359897721]
[2024-11-13 15:42:29,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:29,551 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:42:29,551 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:29,552 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:42:29,552 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:29,553 INFO  L87              Difference]: Start difference. First operand 65006 states and 76651 transitions. Second operand  has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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)
[2024-11-13 15:42:35,176 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:35,176 INFO  L93              Difference]: Finished difference Result 135498 states and 158728 transitions.
[2024-11-13 15:42:35,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:42:35,177 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) Word has length 381
[2024-11-13 15:42:35,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:35,245 INFO  L225             Difference]: With dead ends: 135498
[2024-11-13 15:42:35,245 INFO  L226             Difference]: Without dead ends: 67341
[2024-11-13 15:42:35,281 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:35,282 INFO  L432           NwaCegarLoop]: 1506 mSDtfsCounter, 1034 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:35,282 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1644 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-11-13 15:42:35,344 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67341 states.
[2024-11-13 15:42:36,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67341 to 63394.
[2024-11-13 15:42:36,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 63394 states, 63393 states have (on average 1.1207073336172764) internal successors, (71045), 63393 states have internal predecessors, (71045), 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)
[2024-11-13 15:42:36,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63394 states to 63394 states and 71045 transitions.
[2024-11-13 15:42:36,444 INFO  L78                 Accepts]: Start accepts. Automaton has 63394 states and 71045 transitions. Word has length 381
[2024-11-13 15:42:36,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:36,445 INFO  L471      AbstractCegarLoop]: Abstraction has 63394 states and 71045 transitions.
[2024-11-13 15:42:36,445 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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)
[2024-11-13 15:42:36,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 63394 states and 71045 transitions.
[2024-11-13 15:42:36,456 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 391
[2024-11-13 15:42:36,457 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:36,457 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2024-11-13 15:42:36,457 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-13 15:42:36,458 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:36,458 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:36,458 INFO  L85        PathProgramCache]: Analyzing trace with hash -1045135527, now seen corresponding path program 1 times
[2024-11-13 15:42:36,459 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:36,459 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717069052]
[2024-11-13 15:42:36,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:36,459 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:36,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:39,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:42:39,176 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:39,177 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717069052]
[2024-11-13 15:42:39,177 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717069052] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 15:42:39,177 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251948847]
[2024-11-13 15:42:39,177 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:39,177 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:42:39,177 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 15:42:39,183 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 15:42:39,185 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-13 15:42:39,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:39,457 INFO  L255         TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-13 15:42:39,472 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 15:42:39,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked.
[2024-11-13 15:42:39,908 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-13 15:42:39,908 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251948847] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:39,908 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-13 15:42:39,909 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2024-11-13 15:42:39,910 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718989030]
[2024-11-13 15:42:39,910 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:39,911 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:42:39,911 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:39,912 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:42:39,912 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2024-11-13 15:42:39,912 INFO  L87              Difference]: Start difference. First operand 63394 states and 71045 transitions. Second operand  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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)
[2024-11-13 15:42:45,456 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:45,456 INFO  L93              Difference]: Finished difference Result 124422 states and 139421 transitions.
[2024-11-13 15:42:45,457 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:42:45,457 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) Word has length 390
[2024-11-13 15:42:45,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:45,536 INFO  L225             Difference]: With dead ends: 124422
[2024-11-13 15:42:45,536 INFO  L226             Difference]: Without dead ends: 61817
[2024-11-13 15:42:45,568 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2024-11-13 15:42:45,569 INFO  L432           NwaCegarLoop]: 1341 mSDtfsCounter, 1113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:45,569 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1420 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2024-11-13 15:42:45,637 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61817 states.
[2024-11-13 15:42:46,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61817 to 61816.
[2024-11-13 15:42:46,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61816 states, 61815 states have (on average 1.0949607700396344) internal successors, (67685), 61815 states have internal predecessors, (67685), 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)
[2024-11-13 15:42:46,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61816 states to 61816 states and 67685 transitions.
[2024-11-13 15:42:46,651 INFO  L78                 Accepts]: Start accepts. Automaton has 61816 states and 67685 transitions. Word has length 390
[2024-11-13 15:42:46,652 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:46,652 INFO  L471      AbstractCegarLoop]: Abstraction has 61816 states and 67685 transitions.
[2024-11-13 15:42:46,652 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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)
[2024-11-13 15:42:46,653 INFO  L276                IsEmpty]: Start isEmpty. Operand 61816 states and 67685 transitions.
[2024-11-13 15:42:46,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 421
[2024-11-13 15:42:46,661 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:46,661 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:42:46,689 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-13 15:42:46,862 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:42:46,862 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:46,863 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:46,863 INFO  L85        PathProgramCache]: Analyzing trace with hash -931802601, now seen corresponding path program 1 times
[2024-11-13 15:42:46,863 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:46,863 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927004418]
[2024-11-13 15:42:46,863 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:46,863 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:46,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:47,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 737 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked.
[2024-11-13 15:42:47,602 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:47,602 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927004418]
[2024-11-13 15:42:47,602 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927004418] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:47,603 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:42:47,603 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:42:47,603 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807070517]
[2024-11-13 15:42:47,603 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:47,604 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:42:47,604 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:47,605 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:42:47,605 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:47,605 INFO  L87              Difference]: Start difference. First operand 61816 states and 67685 transitions. Second operand  has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2024-11-13 15:42:54,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:42:54,191 INFO  L93              Difference]: Finished difference Result 144105 states and 158930 transitions.
[2024-11-13 15:42:54,192 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:42:54,192 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) Word has length 420
[2024-11-13 15:42:54,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:42:54,290 INFO  L225             Difference]: With dead ends: 144105
[2024-11-13 15:42:54,290 INFO  L226             Difference]: Without dead ends: 82287
[2024-11-13 15:42:54,323 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:54,325 INFO  L432           NwaCegarLoop]: 773 mSDtfsCounter, 893 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time
[2024-11-13 15:42:54,325 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 856 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [942 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time]
[2024-11-13 15:42:54,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82287 states.
[2024-11-13 15:42:55,419 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 82271.
[2024-11-13 15:42:55,474 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82271 states, 82270 states have (on average 1.095320286860338) internal successors, (90112), 82270 states have internal predecessors, (90112), 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)
[2024-11-13 15:42:55,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82271 states to 82271 states and 90112 transitions.
[2024-11-13 15:42:55,627 INFO  L78                 Accepts]: Start accepts. Automaton has 82271 states and 90112 transitions. Word has length 420
[2024-11-13 15:42:55,628 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:42:55,628 INFO  L471      AbstractCegarLoop]: Abstraction has 82271 states and 90112 transitions.
[2024-11-13 15:42:55,628 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2024-11-13 15:42:55,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 82271 states and 90112 transitions.
[2024-11-13 15:42:55,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 459
[2024-11-13 15:42:55,637 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:42:55,638 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-13 15:42:55,638 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-13 15:42:55,638 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:42:55,638 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:42:55,639 INFO  L85        PathProgramCache]: Analyzing trace with hash 1254029308, now seen corresponding path program 1 times
[2024-11-13 15:42:55,639 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:42:55,639 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736072618]
[2024-11-13 15:42:55,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:42:55,639 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:42:55,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:42:56,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2024-11-13 15:42:56,538 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:42:56,538 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736072618]
[2024-11-13 15:42:56,538 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736072618] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:42:56,539 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:42:56,539 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:42:56,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98257388]
[2024-11-13 15:42:56,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:42:56,540 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:42:56,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:42:56,541 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:42:56,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:42:56,542 INFO  L87              Difference]: Start difference. First operand 82271 states and 90112 transitions. Second operand  has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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)
[2024-11-13 15:43:03,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:03,558 INFO  L93              Difference]: Finished difference Result 182655 states and 201241 transitions.
[2024-11-13 15:43:03,559 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:03,559 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) Word has length 458
[2024-11-13 15:43:03,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:03,677 INFO  L225             Difference]: With dead ends: 182655
[2024-11-13 15:43:03,678 INFO  L226             Difference]: Without dead ends: 101173
[2024-11-13 15:43:03,722 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:03,723 INFO  L432           NwaCegarLoop]: 1726 mSDtfsCounter, 788 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:03,724 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1867 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time]
[2024-11-13 15:43:03,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101173 states.
[2024-11-13 15:43:05,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101173 to 100367.
[2024-11-13 15:43:05,065 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 100367 states, 100366 states have (on average 1.0820795887053385) internal successors, (108604), 100366 states have internal predecessors, (108604), 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)
[2024-11-13 15:43:05,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100367 states to 100367 states and 108604 transitions.
[2024-11-13 15:43:05,181 INFO  L78                 Accepts]: Start accepts. Automaton has 100367 states and 108604 transitions. Word has length 458
[2024-11-13 15:43:05,182 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:05,182 INFO  L471      AbstractCegarLoop]: Abstraction has 100367 states and 108604 transitions.
[2024-11-13 15:43:05,182 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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)
[2024-11-13 15:43:05,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 100367 states and 108604 transitions.
[2024-11-13 15:43:05,195 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 495
[2024-11-13 15:43:05,195 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:05,196 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:43:05,196 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-11-13 15:43:05,196 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:05,196 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:05,197 INFO  L85        PathProgramCache]: Analyzing trace with hash -1713442316, now seen corresponding path program 1 times
[2024-11-13 15:43:05,197 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:05,197 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388929870]
[2024-11-13 15:43:05,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:05,197 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:05,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:07,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 536 backedges. 364 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:43:07,361 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:07,361 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388929870]
[2024-11-13 15:43:07,361 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388929870] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 15:43:07,362 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371195208]
[2024-11-13 15:43:07,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:07,362 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:43:07,362 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 15:43:07,364 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 15:43:07,367 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-13 15:43:07,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:07,648 INFO  L255         TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-13 15:43:07,661 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 15:43:08,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 536 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked.
[2024-11-13 15:43:08,041 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-13 15:43:08,041 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371195208] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:08,041 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-13 15:43:08,041 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2024-11-13 15:43:08,041 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545046571]
[2024-11-13 15:43:08,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:08,042 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:08,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:08,043 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:08,043 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:08,044 INFO  L87              Difference]: Start difference. First operand 100367 states and 108604 transitions. Second operand  has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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)
[2024-11-13 15:43:13,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:13,425 INFO  L93              Difference]: Finished difference Result 208577 states and 226187 transitions.
[2024-11-13 15:43:13,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:13,426 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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) Word has length 494
[2024-11-13 15:43:13,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:13,534 INFO  L225             Difference]: With dead ends: 208577
[2024-11-13 15:43:13,534 INFO  L226             Difference]: Without dead ends: 108999
[2024-11-13 15:43:13,582 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:13,583 INFO  L432           NwaCegarLoop]: 348 mSDtfsCounter, 1125 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:13,583 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 360 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2024-11-13 15:43:13,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108999 states.
[2024-11-13 15:43:15,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108999 to 108999.
[2024-11-13 15:43:15,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108999 states, 108998 states have (on average 1.074038055744142) internal successors, (117068), 108998 states have internal predecessors, (117068), 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)
[2024-11-13 15:43:15,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108999 states to 108999 states and 117068 transitions.
[2024-11-13 15:43:15,542 INFO  L78                 Accepts]: Start accepts. Automaton has 108999 states and 117068 transitions. Word has length 494
[2024-11-13 15:43:15,544 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:15,545 INFO  L471      AbstractCegarLoop]: Abstraction has 108999 states and 117068 transitions.
[2024-11-13 15:43:15,545 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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)
[2024-11-13 15:43:15,545 INFO  L276                IsEmpty]: Start isEmpty. Operand 108999 states and 117068 transitions.
[2024-11-13 15:43:15,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 511
[2024-11-13 15:43:15,564 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:15,565 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:43:15,591 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-13 15:43:15,766 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-13 15:43:15,766 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:15,767 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:15,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 1370354533, now seen corresponding path program 1 times
[2024-11-13 15:43:15,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:15,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144801339]
[2024-11-13 15:43:15,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:15,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:15,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:18,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 536 backedges. 364 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:43:18,251 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:18,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144801339]
[2024-11-13 15:43:18,252 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144801339] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 15:43:18,252 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900352374]
[2024-11-13 15:43:18,252 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:18,252 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:43:18,252 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 15:43:18,255 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 15:43:18,258 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-13 15:43:18,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:18,734 INFO  L255         TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-13 15:43:18,743 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 15:43:18,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked.
[2024-11-13 15:43:18,818 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-13 15:43:18,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [900352374] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:18,819 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-13 15:43:18,819 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2024-11-13 15:43:18,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130795623]
[2024-11-13 15:43:18,821 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:18,822 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:18,822 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:18,822 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:18,822 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:18,823 INFO  L87              Difference]: Start difference. First operand 108999 states and 117068 transitions. Second operand  has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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)
[2024-11-13 15:43:25,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:25,567 INFO  L93              Difference]: Finished difference Result 261278 states and 280825 transitions.
[2024-11-13 15:43:25,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:25,568 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) Word has length 510
[2024-11-13 15:43:25,568 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:25,719 INFO  L225             Difference]: With dead ends: 261278
[2024-11-13 15:43:25,719 INFO  L226             Difference]: Without dead ends: 142031
[2024-11-13 15:43:25,760 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:25,760 INFO  L432           NwaCegarLoop]: 1616 mSDtfsCounter, 892 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 3251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:25,761 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1727 Invalid, 3251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2024-11-13 15:43:25,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142031 states.
[2024-11-13 15:43:27,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142031 to 134946.
[2024-11-13 15:43:27,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 134946 states, 134945 states have (on average 1.0621364259513135) internal successors, (143330), 134945 states have internal predecessors, (143330), 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)
[2024-11-13 15:43:28,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 134946 states to 134946 states and 143330 transitions.
[2024-11-13 15:43:28,322 INFO  L78                 Accepts]: Start accepts. Automaton has 134946 states and 143330 transitions. Word has length 510
[2024-11-13 15:43:28,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:28,322 INFO  L471      AbstractCegarLoop]: Abstraction has 134946 states and 143330 transitions.
[2024-11-13 15:43:28,323 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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)
[2024-11-13 15:43:28,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 134946 states and 143330 transitions.
[2024-11-13 15:43:28,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 530
[2024-11-13 15:43:28,339 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:28,340 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:43:28,356 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-13 15:43:28,540 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2024-11-13 15:43:28,541 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:28,541 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:28,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 1728929232, now seen corresponding path program 1 times
[2024-11-13 15:43:28,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:28,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858631764]
[2024-11-13 15:43:28,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:28,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:28,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:31,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 460 backedges. 288 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-13 15:43:31,244 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:31,244 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858631764]
[2024-11-13 15:43:31,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858631764] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-13 15:43:31,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112281680]
[2024-11-13 15:43:31,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:31,245 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:43:31,245 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3
[2024-11-13 15:43:31,248 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-13 15:43:31,251 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-13 15:43:31,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:31,566 INFO  L255         TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-13 15:43:31,579 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-13 15:43:33,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 460 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked.
[2024-11-13 15:43:33,761 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-13 15:43:33,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [112281680] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:33,762 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-13 15:43:33,762 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6
[2024-11-13 15:43:33,762 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882898928]
[2024-11-13 15:43:33,762 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:33,763 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:33,763 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:33,765 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:33,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:33,765 INFO  L87              Difference]: Start difference. First operand 134946 states and 143330 transitions. Second operand  has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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)
[2024-11-13 15:43:40,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:40,412 INFO  L93              Difference]: Finished difference Result 277773 states and 295022 transitions.
[2024-11-13 15:43:40,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:40,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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) Word has length 529
[2024-11-13 15:43:40,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:40,585 INFO  L225             Difference]: With dead ends: 277773
[2024-11-13 15:43:40,586 INFO  L226             Difference]: Without dead ends: 142037
[2024-11-13 15:43:40,622 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-11-13 15:43:40,623 INFO  L432           NwaCegarLoop]: 928 mSDtfsCounter, 543 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:40,623 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1048 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-11-13 15:43:40,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142037 states.
[2024-11-13 15:43:42,361 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142037 to 142027.
[2024-11-13 15:43:42,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 142027 states, 142026 states have (on average 1.0559545435342825) internal successors, (149973), 142026 states have internal predecessors, (149973), 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)
[2024-11-13 15:43:42,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142027 states to 142027 states and 149973 transitions.
[2024-11-13 15:43:42,634 INFO  L78                 Accepts]: Start accepts. Automaton has 142027 states and 149973 transitions. Word has length 529
[2024-11-13 15:43:42,635 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:42,635 INFO  L471      AbstractCegarLoop]: Abstraction has 142027 states and 149973 transitions.
[2024-11-13 15:43:42,635 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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)
[2024-11-13 15:43:42,635 INFO  L276                IsEmpty]: Start isEmpty. Operand 142027 states and 149973 transitions.
[2024-11-13 15:43:42,654 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 550
[2024-11-13 15:43:42,654 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:42,654 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:43:42,675 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-13 15:43:42,855 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_559056d6-842d-485b-93ac-8e80ead9fc43/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-13 15:43:42,855 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:42,855 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:42,856 INFO  L85        PathProgramCache]: Analyzing trace with hash 713931436, now seen corresponding path program 1 times
[2024-11-13 15:43:42,856 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:42,856 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967044045]
[2024-11-13 15:43:42,856 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:42,856 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:42,965 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:43,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 1066 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked.
[2024-11-13 15:43:43,741 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:43,741 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967044045]
[2024-11-13 15:43:43,741 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967044045] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:43,741 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:43:43,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-13 15:43:43,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823100228]
[2024-11-13 15:43:43,742 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:43,743 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:43,743 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:43,744 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:43,744 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:43,745 INFO  L87              Difference]: Start difference. First operand 142027 states and 149973 transitions. Second operand  has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 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)
[2024-11-13 15:43:47,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:47,434 INFO  L93              Difference]: Finished difference Result 282464 states and 298211 transitions.
[2024-11-13 15:43:47,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:47,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 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) Word has length 549
[2024-11-13 15:43:47,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:47,574 INFO  L225             Difference]: With dead ends: 282464
[2024-11-13 15:43:47,574 INFO  L226             Difference]: Without dead ends: 141226
[2024-11-13 15:43:47,637 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:47,638 INFO  L432           NwaCegarLoop]: 254 mSDtfsCounter, 1486 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:47,639 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 254 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2024-11-13 15:43:48,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141226 states.
[2024-11-13 15:43:49,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141226 to 141225.
[2024-11-13 15:43:49,839 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 141225 states, 141224 states have (on average 1.0551605959327026) internal successors, (149014), 141224 states have internal predecessors, (149014), 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)
[2024-11-13 15:43:49,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141225 states to 141225 states and 149014 transitions.
[2024-11-13 15:43:49,994 INFO  L78                 Accepts]: Start accepts. Automaton has 141225 states and 149014 transitions. Word has length 549
[2024-11-13 15:43:49,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:49,995 INFO  L471      AbstractCegarLoop]: Abstraction has 141225 states and 149014 transitions.
[2024-11-13 15:43:49,995 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 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)
[2024-11-13 15:43:49,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 141225 states and 149014 transitions.
[2024-11-13 15:43:50,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 564
[2024-11-13 15:43:50,005 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:50,006 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1]
[2024-11-13 15:43:50,006 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2024-11-13 15:43:50,006 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:50,006 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:50,007 INFO  L85        PathProgramCache]: Analyzing trace with hash 2051592450, now seen corresponding path program 1 times
[2024-11-13 15:43:50,007 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:50,007 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611830102]
[2024-11-13 15:43:50,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:50,007 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:50,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:50,990 INFO  L134       CoverageAnalysis]: Checked inductivity of 832 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2024-11-13 15:43:50,991 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:50,991 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611830102]
[2024-11-13 15:43:50,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611830102] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:50,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:43:50,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:43:50,991 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944608036]
[2024-11-13 15:43:50,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:50,992 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:50,992 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:50,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:50,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:50,993 INFO  L87              Difference]: Start difference. First operand 141225 states and 149014 transitions. Second operand  has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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)
[2024-11-13 15:43:55,527 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-13 15:43:55,528 INFO  L93              Difference]: Finished difference Result 282452 states and 298078 transitions.
[2024-11-13 15:43:55,528 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-13 15:43:55,528 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) Word has length 563
[2024-11-13 15:43:55,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-13 15:43:55,673 INFO  L225             Difference]: With dead ends: 282452
[2024-11-13 15:43:55,673 INFO  L226             Difference]: Without dead ends: 142016
[2024-11-13 15:43:55,712 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:55,713 INFO  L432           NwaCegarLoop]: 1633 mSDtfsCounter, 609 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-11-13 15:43:55,713 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1749 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-11-13 15:43:55,810 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142016 states.
[2024-11-13 15:43:57,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142016 to 142012.
[2024-11-13 15:43:57,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 142012 states, 142011 states have (on average 1.055037990014858) internal successors, (149827), 142011 states have internal predecessors, (149827), 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)
[2024-11-13 15:43:57,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 142012 states to 142012 states and 149827 transitions.
[2024-11-13 15:43:57,329 INFO  L78                 Accepts]: Start accepts. Automaton has 142012 states and 149827 transitions. Word has length 563
[2024-11-13 15:43:57,329 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-13 15:43:57,329 INFO  L471      AbstractCegarLoop]: Abstraction has 142012 states and 149827 transitions.
[2024-11-13 15:43:57,330 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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)
[2024-11-13 15:43:57,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 142012 states and 149827 transitions.
[2024-11-13 15:43:57,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 599
[2024-11-13 15:43:57,343 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-13 15:43:57,343 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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]
[2024-11-13 15:43:57,343 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-13 15:43:57,343 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-13 15:43:57,344 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-13 15:43:57,344 INFO  L85        PathProgramCache]: Analyzing trace with hash -349880152, now seen corresponding path program 1 times
[2024-11-13 15:43:57,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-13 15:43:57,344 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273000575]
[2024-11-13 15:43:57,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-13 15:43:57,344 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-13 15:43:57,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-13 15:43:58,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 1250 backedges. 938 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-13 15:43:58,239 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-13 15:43:58,239 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273000575]
[2024-11-13 15:43:58,239 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273000575] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-13 15:43:58,239 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-13 15:43:58,239 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-13 15:43:58,239 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855611373]
[2024-11-13 15:43:58,240 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-13 15:43:58,241 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-13 15:43:58,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-13 15:43:58,241 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-13 15:43:58,241 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-13 15:43:58,242 INFO  L87              Difference]: Start difference. First operand 142012 states and 149827 transitions. Second operand  has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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)