./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 0e0057cc
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya --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 64bit --witnessprinter.graph.data.programhash e47dc3260ffa9658c46e0ec5a585ac6bbf94ae34c503d12349a61c4257e23a77
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 05:20:08,934 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 05:20:09,003 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-29 05:20:09,009 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 05:20:09,010 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 05:20:09,036 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 05:20:09,037 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 05:20:09,038 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 05:20:09,038 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 05:20:09,039 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 05:20:09,039 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 05:20:09,040 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 05:20:09,041 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 05:20:09,041 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 05:20:09,042 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 05:20:09,042 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 05:20:09,043 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 05:20:09,043 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 05:20:09,044 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 05:20:09,044 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 05:20:09,045 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 05:20:09,050 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 05:20:09,050 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 05:20:09,051 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 05:20:09,051 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 05:20:09,051 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 05:20:09,052 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 05:20:09,052 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 05:20:09,052 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:20:09,053 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 05:20:09,053 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 05:20:09,054 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 05:20:09,054 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 05:20:09,054 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 05:20:09,054 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 05:20:09,055 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 05:20:09,055 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 05:20:09,055 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 05:20:09,055 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 05:20:09,055 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47dc3260ffa9658c46e0ec5a585ac6bbf94ae34c503d12349a61c4257e23a77
[2023-11-29 05:20:09,293 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 05:20:09,314 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 05:20:09,317 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 05:20:09,318 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 05:20:09,319 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 05:20:09,320 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c
[2023-11-29 05:20:12,051 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 05:20:12,415 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 05:20:12,416 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c
[2023-11-29 05:20:12,444 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/data/e05b275dc/990d927db7074620981d098838f0864c/FLAG609039797
[2023-11-29 05:20:12,459 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/data/e05b275dc/990d927db7074620981d098838f0864c
[2023-11-29 05:20:12,461 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 05:20:12,463 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 05:20:12,464 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 05:20:12,464 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 05:20:12,469 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 05:20:12,470 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:20:12" (1/1) ...
[2023-11-29 05:20:12,471 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cff304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:12, skipping insertion in model container
[2023-11-29 05:20:12,471 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:20:12" (1/1) ...
[2023-11-29 05:20:12,579 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 05:20:12,791 WARN  L240   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_e0c65bee-3913-402d-a967-896bab8b8cc2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c[1184,1197]
[2023-11-29 05:20:13,541 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:20:13,552 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 05:20:13,565 WARN  L240   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_e0c65bee-3913-402d-a967-896bab8b8cc2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c[1184,1197]
[2023-11-29 05:20:14,033 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 05:20:14,049 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 05:20:14,049 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14 WrapperNode
[2023-11-29 05:20:14,050 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 05:20:14,051 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 05:20:14,051 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 05:20:14,051 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 05:20:14,086 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:14,232 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:16,107 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26597
[2023-11-29 05:20:16,107 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 05:20:16,108 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 05:20:16,108 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 05:20:16,108 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 05:20:16,117 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:16,117 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:16,500 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:16,802 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].
[2023-11-29 05:20:16,802 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:16,803 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,262 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,391 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,487 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,575 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,929 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 05:20:17,930 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 05:20:17,930 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 05:20:17,930 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 05:20:17,931 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (1/1) ...
[2023-11-29 05:20:17,935 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 05:20:17,944 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:20:17,956 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 05:20:17,958 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 05:20:17,983 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 05:20:17,983 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 05:20:17,983 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 05:20:17,983 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 05:20:18,974 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 05:20:18,976 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 05:20:31,868 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 05:20:32,193 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 05:20:32,193 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 05:20:32,196 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:20:32 BoogieIcfgContainer
[2023-11-29 05:20:32,196 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 05:20:32,199 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 05:20:32,199 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 05:20:32,202 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 05:20:32,202 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:20:12" (1/3) ...
[2023-11-29 05:20:32,203 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d34d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:20:32, skipping insertion in model container
[2023-11-29 05:20:32,203 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:20:14" (2/3) ...
[2023-11-29 05:20:32,204 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d34d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:20:32, skipping insertion in model container
[2023-11-29 05:20:32,204 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:20:32" (3/3) ...
[2023-11-29 05:20:32,205 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cyclic_scheduler.3.prop1-back-serstep.c
[2023-11-29 05:20:32,224 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 05:20:32,224 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 05:20:32,359 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 05:20:32,366 INFO  L357      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, mHoare=true, 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;@6e75c747, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 05:20:32,367 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 05:20:32,389 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5912 states, 5910 states have (on average 1.6666666666666667) internal successors, (9850), 5911 states have internal predecessors, (9850), 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)
[2023-11-29 05:20:32,448 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 921
[2023-11-29 05:20:32,449 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:20:32,450 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:20:32,451 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:20:32,457 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:20:32,458 INFO  L85        PathProgramCache]: Analyzing trace with hash -1419359617, now seen corresponding path program 1 times
[2023-11-29 05:20:32,467 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:20:32,468 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500674058]
[2023-11-29 05:20:32,468 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:20:32,469 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:20:33,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:20:37,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:20:37,154 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:20:37,155 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500674058]
[2023-11-29 05:20:37,155 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500674058] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:20:37,156 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:20:37,156 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:20:37,158 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922797002]
[2023-11-29 05:20:37,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:20:37,165 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:20:37,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:20:37,195 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:20:37,196 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:20:37,212 INFO  L87              Difference]: Start difference. First operand  has 5912 states, 5910 states have (on average 1.6666666666666667) internal successors, (9850), 5911 states have internal predecessors, (9850), 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 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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)
[2023-11-29 05:20:37,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:20:37,579 INFO  L93              Difference]: Finished difference Result 11466 states and 19106 transitions.
[2023-11-29 05:20:37,580 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:20:37,582 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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 920
[2023-11-29 05:20:37,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:20:37,629 INFO  L225             Difference]: With dead ends: 11466
[2023-11-29 05:20:37,629 INFO  L226             Difference]: Without dead ends: 5912
[2023-11-29 05:20:37,641 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:20:37,644 INFO  L413           NwaCegarLoop]: 9843 mSDtfsCounter, 1 mSDsluCounter, 19681 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29524 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:20:37,646 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29524 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:20:37,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5912 states.
[2023-11-29 05:20:37,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5912 to 5912.
[2023-11-29 05:20:37,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5912 states, 5911 states have (on average 1.6660463542547792) internal successors, (9848), 5911 states have internal predecessors, (9848), 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)
[2023-11-29 05:20:37,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9848 transitions.
[2023-11-29 05:20:37,849 INFO  L78                 Accepts]: Start accepts. Automaton has 5912 states and 9848 transitions. Word has length 920
[2023-11-29 05:20:37,851 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:20:37,852 INFO  L495      AbstractCegarLoop]: Abstraction has 5912 states and 9848 transitions.
[2023-11-29 05:20:37,852 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 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)
[2023-11-29 05:20:37,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 5912 states and 9848 transitions.
[2023-11-29 05:20:37,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 922
[2023-11-29 05:20:37,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:20:37,892 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:20:37,893 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 05:20:37,893 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:20:37,894 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:20:37,894 INFO  L85        PathProgramCache]: Analyzing trace with hash -1048685141, now seen corresponding path program 1 times
[2023-11-29 05:20:37,895 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:20:37,895 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296947337]
[2023-11-29 05:20:37,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:20:37,896 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:20:38,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:20:40,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:20:40,171 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:20:40,171 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296947337]
[2023-11-29 05:20:40,171 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296947337] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:20:40,172 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:20:40,172 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:20:40,172 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883901988]
[2023-11-29 05:20:40,172 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:20:40,175 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:20:40,175 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:20:40,177 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:20:40,177 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:20:40,178 INFO  L87              Difference]: Start difference. First operand 5912 states and 9848 transitions. Second operand  has 4 states, 4 states have (on average 230.25) internal successors, (921), 4 states have internal predecessors, (921), 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)
[2023-11-29 05:20:40,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:20:40,480 INFO  L93              Difference]: Finished difference Result 11469 states and 19104 transitions.
[2023-11-29 05:20:40,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-29 05:20:40,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 230.25) internal successors, (921), 4 states have internal predecessors, (921), 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 921
[2023-11-29 05:20:40,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:20:40,509 INFO  L225             Difference]: With dead ends: 11469
[2023-11-29 05:20:40,509 INFO  L226             Difference]: Without dead ends: 5915
[2023-11-29 05:20:40,514 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:20:40,516 INFO  L413           NwaCegarLoop]: 9843 mSDtfsCounter, 1 mSDsluCounter, 19679 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29522 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:20:40,516 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29522 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:20:40,526 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5915 states.
[2023-11-29 05:20:40,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5914.
[2023-11-29 05:20:40,605 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5914 states, 5913 states have (on average 1.6658210722137663) internal successors, (9850), 5913 states have internal predecessors, (9850), 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)
[2023-11-29 05:20:40,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5914 states to 5914 states and 9850 transitions.
[2023-11-29 05:20:40,628 INFO  L78                 Accepts]: Start accepts. Automaton has 5914 states and 9850 transitions. Word has length 921
[2023-11-29 05:20:40,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:20:40,630 INFO  L495      AbstractCegarLoop]: Abstraction has 5914 states and 9850 transitions.
[2023-11-29 05:20:40,631 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 230.25) internal successors, (921), 4 states have internal predecessors, (921), 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)
[2023-11-29 05:20:40,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 5914 states and 9850 transitions.
[2023-11-29 05:20:40,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 923
[2023-11-29 05:20:40,641 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:20:40,641 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:20:40,642 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 05:20:40,642 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:20:40,642 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:20:40,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 1638284567, now seen corresponding path program 1 times
[2023-11-29 05:20:40,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:20:40,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105429693]
[2023-11-29 05:20:40,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:20:40,644 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:20:40,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:20:42,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 05:20:42,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:20:42,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105429693]
[2023-11-29 05:20:42,269 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105429693] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:20:42,269 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:20:42,269 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:20:42,270 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505792846]
[2023-11-29 05:20:42,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:20:42,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:20:42,271 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:20:42,273 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:20:42,273 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:20:42,275 INFO  L87              Difference]: Start difference. First operand 5914 states and 9850 transitions. Second operand  has 5 states, 5 states have (on average 184.4) internal successors, (922), 4 states have internal predecessors, (922), 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)
[2023-11-29 05:20:42,734 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:20:42,734 INFO  L93              Difference]: Finished difference Result 18030 states and 30033 transitions.
[2023-11-29 05:20:42,734 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-29 05:20:42,735 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 184.4) internal successors, (922), 4 states have internal predecessors, (922), 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 922
[2023-11-29 05:20:42,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:20:42,812 INFO  L225             Difference]: With dead ends: 18030
[2023-11-29 05:20:42,813 INFO  L226             Difference]: Without dead ends: 12474
[2023-11-29 05:20:42,820 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-29 05:20:42,822 INFO  L413           NwaCegarLoop]: 11527 mSDtfsCounter, 38344 mSDsluCounter, 19680 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38344 SdHoareTripleChecker+Valid, 31207 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:20:42,822 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38344 Valid, 31207 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:20:42,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12474 states.
[2023-11-29 05:20:42,955 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 6927.
[2023-11-29 05:20:42,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6927 states, 6926 states have (on average 1.6657522379439793) internal successors, (11537), 6926 states have internal predecessors, (11537), 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)
[2023-11-29 05:20:42,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6927 states to 6927 states and 11537 transitions.
[2023-11-29 05:20:42,990 INFO  L78                 Accepts]: Start accepts. Automaton has 6927 states and 11537 transitions. Word has length 922
[2023-11-29 05:20:42,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:20:42,991 INFO  L495      AbstractCegarLoop]: Abstraction has 6927 states and 11537 transitions.
[2023-11-29 05:20:42,991 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 184.4) internal successors, (922), 4 states have internal predecessors, (922), 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)
[2023-11-29 05:20:42,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 6927 states and 11537 transitions.
[2023-11-29 05:20:43,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4624
[2023-11-29 05:20:43,164 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:20:43,167 INFO  L195           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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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[2023-11-29 05:20:43,168 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 05:20:43,168 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:20:43,168 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:20:43,170 INFO  L85        PathProgramCache]: Analyzing trace with hash 1265187406, now seen corresponding path program 1 times
[2023-11-29 05:20:43,170 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:20:43,171 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556340407]
[2023-11-29 05:20:43,171 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:20:43,171 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:20:48,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:21:03,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked.
[2023-11-29 05:21:03,160 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:21:03,160 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556340407]
[2023-11-29 05:21:03,160 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556340407] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:21:03,160 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:21:03,161 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:21:03,161 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802036818]
[2023-11-29 05:21:03,162 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:21:03,165 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:21:03,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:21:03,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:21:03,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:21:03,171 INFO  L87              Difference]: Start difference. First operand 6927 states and 11537 transitions. Second operand  has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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)
[2023-11-29 05:21:03,504 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:21:03,504 INFO  L93              Difference]: Finished difference Result 18035 states and 30038 transitions.
[2023-11-29 05:21:03,504 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:21:03,506 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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 4623
[2023-11-29 05:21:03,512 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:21:03,537 INFO  L225             Difference]: With dead ends: 18035
[2023-11-29 05:21:03,537 INFO  L226             Difference]: Without dead ends: 12479
[2023-11-29 05:21:03,545 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:21:03,546 INFO  L413           NwaCegarLoop]: 11528 mSDtfsCounter, 9241 mSDsluCounter, 30602 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9241 SdHoareTripleChecker+Valid, 42130 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:21:03,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9241 Valid, 42130 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:21:03,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12479 states.
[2023-11-29 05:21:03,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 6927.
[2023-11-29 05:21:03,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6927 states, 6926 states have (on average 1.6657522379439793) internal successors, (11537), 6926 states have internal predecessors, (11537), 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)
[2023-11-29 05:21:03,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6927 states to 6927 states and 11537 transitions.
[2023-11-29 05:21:03,694 INFO  L78                 Accepts]: Start accepts. Automaton has 6927 states and 11537 transitions. Word has length 4623
[2023-11-29 05:21:03,700 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:21:03,700 INFO  L495      AbstractCegarLoop]: Abstraction has 6927 states and 11537 transitions.
[2023-11-29 05:21:03,701 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 790.0) internal successors, (3950), 5 states have internal predecessors, (3950), 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)
[2023-11-29 05:21:03,702 INFO  L276                IsEmpty]: Start isEmpty. Operand 6927 states and 11537 transitions.
[2023-11-29 05:21:03,908 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4625
[2023-11-29 05:21:03,908 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:21:03,912 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:21:03,912 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 05:21:03,912 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:21:03,913 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:21:03,915 INFO  L85        PathProgramCache]: Analyzing trace with hash -2130738566, now seen corresponding path program 1 times
[2023-11-29 05:21:03,915 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:21:03,915 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476288571]
[2023-11-29 05:21:03,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:21:03,916 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:21:08,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:21:21,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked.
[2023-11-29 05:21:21,336 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:21:21,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476288571]
[2023-11-29 05:21:21,337 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476288571] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:21:21,337 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:21:21,338 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:21:21,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796048138]
[2023-11-29 05:21:21,338 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:21:21,343 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:21:21,343 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:21:21,348 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:21:21,348 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:21:21,350 INFO  L87              Difference]: Start difference. First operand 6927 states and 11537 transitions. Second operand  has 4 states, 4 states have (on average 988.25) internal successors, (3953), 4 states have internal predecessors, (3953), 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)
[2023-11-29 05:21:21,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:21:21,798 INFO  L93              Difference]: Finished difference Result 18037 states and 30040 transitions.
[2023-11-29 05:21:21,799 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:21:21,800 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 988.25) internal successors, (3953), 4 states have internal predecessors, (3953), 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 4624
[2023-11-29 05:21:21,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:21:21,831 INFO  L225             Difference]: With dead ends: 18037
[2023-11-29 05:21:21,831 INFO  L226             Difference]: Without dead ends: 12478
[2023-11-29 05:21:21,839 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:21:21,840 INFO  L413           NwaCegarLoop]: 11523 mSDtfsCounter, 9238 mSDsluCounter, 21357 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9238 SdHoareTripleChecker+Valid, 32880 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:21:21,840 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9238 Valid, 32880 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:21:21,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12478 states.
[2023-11-29 05:21:21,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12478 to 6929.
[2023-11-29 05:21:21,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6929 states, 6928 states have (on average 1.6655600461893765) internal successors, (11539), 6928 states have internal predecessors, (11539), 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)
[2023-11-29 05:21:21,994 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 11539 transitions.
[2023-11-29 05:21:21,994 INFO  L78                 Accepts]: Start accepts. Automaton has 6929 states and 11539 transitions. Word has length 4624
[2023-11-29 05:21:22,000 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:21:22,001 INFO  L495      AbstractCegarLoop]: Abstraction has 6929 states and 11539 transitions.
[2023-11-29 05:21:22,003 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 988.25) internal successors, (3953), 4 states have internal predecessors, (3953), 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)
[2023-11-29 05:21:22,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 6929 states and 11539 transitions.
[2023-11-29 05:21:22,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4626
[2023-11-29 05:21:22,235 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:21:22,237 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:21:22,238 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 05:21:22,238 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:21:22,238 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:21:22,240 INFO  L85        PathProgramCache]: Analyzing trace with hash -118357912, now seen corresponding path program 1 times
[2023-11-29 05:21:22,240 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:21:22,240 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433516080]
[2023-11-29 05:21:22,241 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:21:22,241 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:21:25,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:21:38,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked.
[2023-11-29 05:21:38,790 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:21:38,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433516080]
[2023-11-29 05:21:38,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433516080] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:21:38,790 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:21:38,791 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:21:38,792 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685338700]
[2023-11-29 05:21:38,792 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:21:38,797 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:21:38,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:21:38,802 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:21:38,803 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:21:38,804 INFO  L87              Difference]: Start difference. First operand 6929 states and 11539 transitions. Second operand  has 4 states, 4 states have (on average 989.0) internal successors, (3956), 4 states have internal predecessors, (3956), 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)
[2023-11-29 05:21:39,194 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:21:39,195 INFO  L93              Difference]: Finished difference Result 18043 states and 30046 transitions.
[2023-11-29 05:21:39,195 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:21:39,197 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 989.0) internal successors, (3956), 4 states have internal predecessors, (3956), 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 4625
[2023-11-29 05:21:39,207 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:21:39,231 INFO  L225             Difference]: With dead ends: 18043
[2023-11-29 05:21:39,231 INFO  L226             Difference]: Without dead ends: 12479
[2023-11-29 05:21:39,240 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:21:39,241 INFO  L413           NwaCegarLoop]: 11518 mSDtfsCounter, 9235 mSDsluCounter, 21352 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9235 SdHoareTripleChecker+Valid, 32870 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:21:39,241 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9235 Valid, 32870 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:21:39,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12479 states.
[2023-11-29 05:21:39,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 6931.
[2023-11-29 05:21:39,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6931 states, 6930 states have (on average 1.6653679653679654) internal successors, (11541), 6930 states have internal predecessors, (11541), 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)
[2023-11-29 05:21:39,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 11541 transitions.
[2023-11-29 05:21:39,403 INFO  L78                 Accepts]: Start accepts. Automaton has 6931 states and 11541 transitions. Word has length 4625
[2023-11-29 05:21:39,411 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:21:39,411 INFO  L495      AbstractCegarLoop]: Abstraction has 6931 states and 11541 transitions.
[2023-11-29 05:21:39,413 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 989.0) internal successors, (3956), 4 states have internal predecessors, (3956), 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)
[2023-11-29 05:21:39,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 6931 states and 11541 transitions.
[2023-11-29 05:21:39,639 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4627
[2023-11-29 05:21:39,640 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:21:39,643 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:21:39,644 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 05:21:39,644 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:21:39,644 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:21:39,646 INFO  L85        PathProgramCache]: Analyzing trace with hash 853622046, now seen corresponding path program 1 times
[2023-11-29 05:21:39,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:21:39,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106803929]
[2023-11-29 05:21:39,647 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:21:39,647 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:21:43,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:21:55,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked.
[2023-11-29 05:21:55,953 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:21:55,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106803929]
[2023-11-29 05:21:55,954 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106803929] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:21:55,954 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:21:55,954 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:21:55,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421502756]
[2023-11-29 05:21:55,955 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:21:55,958 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:21:55,958 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:21:55,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:21:55,962 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:21:55,963 INFO  L87              Difference]: Start difference. First operand 6931 states and 11541 transitions. Second operand  has 4 states, 4 states have (on average 989.75) internal successors, (3959), 4 states have internal predecessors, (3959), 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)
[2023-11-29 05:21:56,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:21:56,180 INFO  L93              Difference]: Finished difference Result 18049 states and 30052 transitions.
[2023-11-29 05:21:56,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:21:56,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 989.75) internal successors, (3959), 4 states have internal predecessors, (3959), 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 4626
[2023-11-29 05:21:56,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:21:56,205 INFO  L225             Difference]: With dead ends: 18049
[2023-11-29 05:21:56,205 INFO  L226             Difference]: Without dead ends: 12480
[2023-11-29 05:21:56,211 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:21:56,212 INFO  L413           NwaCegarLoop]: 11513 mSDtfsCounter, 9232 mSDsluCounter, 21347 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9232 SdHoareTripleChecker+Valid, 32860 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:21:56,213 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9232 Valid, 32860 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:21:56,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12480 states.
[2023-11-29 05:21:56,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 6933.
[2023-11-29 05:21:56,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6933 states, 6932 states have (on average 1.6651759953837277) internal successors, (11543), 6932 states have internal predecessors, (11543), 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)
[2023-11-29 05:21:56,336 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6933 states to 6933 states and 11543 transitions.
[2023-11-29 05:21:56,336 INFO  L78                 Accepts]: Start accepts. Automaton has 6933 states and 11543 transitions. Word has length 4626
[2023-11-29 05:21:56,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:21:56,340 INFO  L495      AbstractCegarLoop]: Abstraction has 6933 states and 11543 transitions.
[2023-11-29 05:21:56,342 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 989.75) internal successors, (3959), 4 states have internal predecessors, (3959), 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)
[2023-11-29 05:21:56,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 6933 states and 11543 transitions.
[2023-11-29 05:21:56,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4628
[2023-11-29 05:21:56,501 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:21:56,504 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:21:56,504 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 05:21:56,504 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:21:56,504 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:21:56,506 INFO  L85        PathProgramCache]: Analyzing trace with hash -1007337408, now seen corresponding path program 1 times
[2023-11-29 05:21:56,506 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:21:56,506 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054529800]
[2023-11-29 05:21:56,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:21:56,506 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:00,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:14,225 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked.
[2023-11-29 05:22:14,226 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:14,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054529800]
[2023-11-29 05:22:14,226 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054529800] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:14,226 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:14,227 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:14,227 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7932880]
[2023-11-29 05:22:14,227 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:14,232 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:14,232 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:14,236 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:14,237 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:14,238 INFO  L87              Difference]: Start difference. First operand 6933 states and 11543 transitions. Second operand  has 4 states, 4 states have (on average 990.5) internal successors, (3962), 4 states have internal predecessors, (3962), 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)
[2023-11-29 05:22:14,598 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:14,599 INFO  L93              Difference]: Finished difference Result 18055 states and 30058 transitions.
[2023-11-29 05:22:14,599 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:22:14,600 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 990.5) internal successors, (3962), 4 states have internal predecessors, (3962), 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 4627
[2023-11-29 05:22:14,605 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:14,622 INFO  L225             Difference]: With dead ends: 18055
[2023-11-29 05:22:14,622 INFO  L226             Difference]: Without dead ends: 12481
[2023-11-29 05:22:14,628 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:22:14,629 INFO  L413           NwaCegarLoop]: 11508 mSDtfsCounter, 9229 mSDsluCounter, 21342 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9229 SdHoareTripleChecker+Valid, 32850 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:14,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9229 Valid, 32850 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:22:14,642 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12481 states.
[2023-11-29 05:22:14,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12481 to 6935.
[2023-11-29 05:22:14,732 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6935 states, 6934 states have (on average 1.6649841361407558) internal successors, (11545), 6934 states have internal predecessors, (11545), 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)
[2023-11-29 05:22:14,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 11545 transitions.
[2023-11-29 05:22:14,741 INFO  L78                 Accepts]: Start accepts. Automaton has 6935 states and 11545 transitions. Word has length 4627
[2023-11-29 05:22:14,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:14,744 INFO  L495      AbstractCegarLoop]: Abstraction has 6935 states and 11545 transitions.
[2023-11-29 05:22:14,745 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 990.5) internal successors, (3962), 4 states have internal predecessors, (3962), 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)
[2023-11-29 05:22:14,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 6935 states and 11545 transitions.
[2023-11-29 05:22:14,840 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4629
[2023-11-29 05:22:14,840 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:14,843 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:22:14,843 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-29 05:22:14,843 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:14,843 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:14,845 INFO  L85        PathProgramCache]: Analyzing trace with hash 176680452, now seen corresponding path program 1 times
[2023-11-29 05:22:14,845 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:14,845 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988491970]
[2023-11-29 05:22:14,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:14,846 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:18,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:33,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2023-11-29 05:22:33,753 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:33,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988491970]
[2023-11-29 05:22:33,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988491970] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:33,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:33,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:33,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191587032]
[2023-11-29 05:22:33,755 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:33,760 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:33,760 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:33,765 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:33,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:33,766 INFO  L87              Difference]: Start difference. First operand 6935 states and 11545 transitions. Second operand  has 4 states, 4 states have (on average 991.25) internal successors, (3965), 4 states have internal predecessors, (3965), 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)
[2023-11-29 05:22:34,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:34,210 INFO  L93              Difference]: Finished difference Result 18061 states and 30064 transitions.
[2023-11-29 05:22:34,210 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:22:34,211 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 991.25) internal successors, (3965), 4 states have internal predecessors, (3965), 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 4628
[2023-11-29 05:22:34,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:34,252 INFO  L225             Difference]: With dead ends: 18061
[2023-11-29 05:22:34,252 INFO  L226             Difference]: Without dead ends: 12482
[2023-11-29 05:22:34,261 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:22:34,262 INFO  L413           NwaCegarLoop]: 11503 mSDtfsCounter, 9226 mSDsluCounter, 21337 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9226 SdHoareTripleChecker+Valid, 32840 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:34,262 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9226 Valid, 32840 Invalid, 19 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-29 05:22:34,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12482 states.
[2023-11-29 05:22:34,392 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12482 to 6937.
[2023-11-29 05:22:34,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6937 states, 6936 states have (on average 1.6647923875432526) internal successors, (11547), 6936 states have internal predecessors, (11547), 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)
[2023-11-29 05:22:34,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 11547 transitions.
[2023-11-29 05:22:34,414 INFO  L78                 Accepts]: Start accepts. Automaton has 6937 states and 11547 transitions. Word has length 4628
[2023-11-29 05:22:34,420 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:34,420 INFO  L495      AbstractCegarLoop]: Abstraction has 6937 states and 11547 transitions.
[2023-11-29 05:22:34,422 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 991.25) internal successors, (3965), 4 states have internal predecessors, (3965), 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)
[2023-11-29 05:22:34,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 6937 states and 11547 transitions.
[2023-11-29 05:22:34,595 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4630
[2023-11-29 05:22:34,595 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:34,599 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:22:34,600 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-29 05:22:34,600 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:34,600 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:34,603 INFO  L85        PathProgramCache]: Analyzing trace with hash 708616794, now seen corresponding path program 1 times
[2023-11-29 05:22:34,603 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:34,603 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805554157]
[2023-11-29 05:22:34,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:34,605 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:39,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:22:53,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked.
[2023-11-29 05:22:53,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:22:53,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805554157]
[2023-11-29 05:22:53,236 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805554157] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:22:53,236 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:22:53,237 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:22:53,237 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786917730]
[2023-11-29 05:22:53,237 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:22:53,240 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:22:53,241 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:22:53,243 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:22:53,244 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:22:53,245 INFO  L87              Difference]: Start difference. First operand 6937 states and 11547 transitions. Second operand  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 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)
[2023-11-29 05:22:53,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:22:53,481 INFO  L93              Difference]: Finished difference Result 18067 states and 30070 transitions.
[2023-11-29 05:22:53,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:22:53,482 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 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 4629
[2023-11-29 05:22:53,486 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:22:53,495 INFO  L225             Difference]: With dead ends: 18067
[2023-11-29 05:22:53,495 INFO  L226             Difference]: Without dead ends: 12483
[2023-11-29 05:22:53,504 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:22:53,504 INFO  L413           NwaCegarLoop]: 11498 mSDtfsCounter, 9223 mSDsluCounter, 21332 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9223 SdHoareTripleChecker+Valid, 32830 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:22:53,505 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9223 Valid, 32830 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:22:53,517 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12483 states.
[2023-11-29 05:22:53,631 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12483 to 6939.
[2023-11-29 05:22:53,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6939 states, 6938 states have (on average 1.664600749495532) internal successors, (11549), 6938 states have internal predecessors, (11549), 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)
[2023-11-29 05:22:53,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6939 states to 6939 states and 11549 transitions.
[2023-11-29 05:22:53,650 INFO  L78                 Accepts]: Start accepts. Automaton has 6939 states and 11549 transitions. Word has length 4629
[2023-11-29 05:22:53,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:22:53,653 INFO  L495      AbstractCegarLoop]: Abstraction has 6939 states and 11549 transitions.
[2023-11-29 05:22:53,654 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 992.0) internal successors, (3968), 4 states have internal predecessors, (3968), 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)
[2023-11-29 05:22:53,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 6939 states and 11549 transitions.
[2023-11-29 05:22:53,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4631
[2023-11-29 05:22:53,934 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:22:53,936 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:22:53,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-29 05:22:53,937 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:22:53,937 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:22:53,939 INFO  L85        PathProgramCache]: Analyzing trace with hash 1246248872, now seen corresponding path program 1 times
[2023-11-29 05:22:53,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:22:53,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758583129]
[2023-11-29 05:22:53,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:22:53,939 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:22:58,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:23:10,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked.
[2023-11-29 05:23:10,942 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:23:10,942 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758583129]
[2023-11-29 05:23:10,942 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758583129] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:23:10,942 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:23:10,943 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:23:10,943 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550618497]
[2023-11-29 05:23:10,943 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:23:10,946 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:23:10,946 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:23:10,949 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:23:10,949 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:23:10,950 INFO  L87              Difference]: Start difference. First operand 6939 states and 11549 transitions. Second operand  has 4 states, 4 states have (on average 992.75) internal successors, (3971), 4 states have internal predecessors, (3971), 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)
[2023-11-29 05:23:11,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:23:11,205 INFO  L93              Difference]: Finished difference Result 18073 states and 30076 transitions.
[2023-11-29 05:23:11,206 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:23:11,207 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 992.75) internal successors, (3971), 4 states have internal predecessors, (3971), 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 4630
[2023-11-29 05:23:11,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:23:11,218 INFO  L225             Difference]: With dead ends: 18073
[2023-11-29 05:23:11,218 INFO  L226             Difference]: Without dead ends: 12484
[2023-11-29 05:23:11,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:23:11,225 INFO  L413           NwaCegarLoop]: 11493 mSDtfsCounter, 9220 mSDsluCounter, 21327 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9220 SdHoareTripleChecker+Valid, 32820 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:23:11,225 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9220 Valid, 32820 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:23:11,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12484 states.
[2023-11-29 05:23:11,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 6941.
[2023-11-29 05:23:11,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6941 states, 6940 states have (on average 1.6644092219020172) internal successors, (11551), 6940 states have internal predecessors, (11551), 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)
[2023-11-29 05:23:11,329 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 11551 transitions.
[2023-11-29 05:23:11,330 INFO  L78                 Accepts]: Start accepts. Automaton has 6941 states and 11551 transitions. Word has length 4630
[2023-11-29 05:23:11,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:23:11,332 INFO  L495      AbstractCegarLoop]: Abstraction has 6941 states and 11551 transitions.
[2023-11-29 05:23:11,333 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 992.75) internal successors, (3971), 4 states have internal predecessors, (3971), 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)
[2023-11-29 05:23:11,333 INFO  L276                IsEmpty]: Start isEmpty. Operand 6941 states and 11551 transitions.
[2023-11-29 05:23:11,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4632
[2023-11-29 05:23:11,521 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:23:11,524 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:23:11,524 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-29 05:23:11,524 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:23:11,524 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:23:11,526 INFO  L85        PathProgramCache]: Analyzing trace with hash -1008791246, now seen corresponding path program 1 times
[2023-11-29 05:23:11,526 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:23:11,526 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502383451]
[2023-11-29 05:23:11,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:11,527 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:23:15,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:23:28,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked.
[2023-11-29 05:23:28,169 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:23:28,169 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502383451]
[2023-11-29 05:23:28,169 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502383451] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:23:28,169 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:23:28,170 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:23:28,170 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870478515]
[2023-11-29 05:23:28,170 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:23:28,173 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:23:28,173 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:23:28,176 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:23:28,176 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:23:28,177 INFO  L87              Difference]: Start difference. First operand 6941 states and 11551 transitions. Second operand  has 4 states, 4 states have (on average 993.5) internal successors, (3974), 4 states have internal predecessors, (3974), 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)
[2023-11-29 05:23:28,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:23:28,657 INFO  L93              Difference]: Finished difference Result 18079 states and 30082 transitions.
[2023-11-29 05:23:28,657 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:23:28,658 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 993.5) internal successors, (3974), 4 states have internal predecessors, (3974), 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 4631
[2023-11-29 05:23:28,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:23:28,673 INFO  L225             Difference]: With dead ends: 18079
[2023-11-29 05:23:28,673 INFO  L226             Difference]: Without dead ends: 12485
[2023-11-29 05:23:28,678 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:23:28,679 INFO  L413           NwaCegarLoop]: 11488 mSDtfsCounter, 9217 mSDsluCounter, 21322 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9217 SdHoareTripleChecker+Valid, 32810 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:23:28,679 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9217 Valid, 32810 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:23:28,691 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12485 states.
[2023-11-29 05:23:28,767 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12485 to 6943.
[2023-11-29 05:23:28,773 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6943 states, 6942 states have (on average 1.664217804667243) internal successors, (11553), 6942 states have internal predecessors, (11553), 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)
[2023-11-29 05:23:28,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 11553 transitions.
[2023-11-29 05:23:28,785 INFO  L78                 Accepts]: Start accepts. Automaton has 6943 states and 11553 transitions. Word has length 4631
[2023-11-29 05:23:28,788 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:23:28,788 INFO  L495      AbstractCegarLoop]: Abstraction has 6943 states and 11553 transitions.
[2023-11-29 05:23:28,789 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 993.5) internal successors, (3974), 4 states have internal predecessors, (3974), 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)
[2023-11-29 05:23:28,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 6943 states and 11553 transitions.
[2023-11-29 05:23:28,933 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4633
[2023-11-29 05:23:28,933 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:23:28,936 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:23:28,936 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-29 05:23:28,937 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:23:28,937 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:23:28,939 INFO  L85        PathProgramCache]: Analyzing trace with hash 942470286, now seen corresponding path program 1 times
[2023-11-29 05:23:28,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:23:28,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011344566]
[2023-11-29 05:23:28,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:28,940 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:23:32,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:23:45,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked.
[2023-11-29 05:23:45,933 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:23:45,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011344566]
[2023-11-29 05:23:45,934 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011344566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:23:45,934 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:23:45,934 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:23:45,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844464408]
[2023-11-29 05:23:45,934 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:23:45,937 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:23:45,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:23:45,940 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:23:45,940 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:23:45,941 INFO  L87              Difference]: Start difference. First operand 6943 states and 11553 transitions. Second operand  has 5 states, 5 states have (on average 795.4) internal successors, (3977), 5 states have internal predecessors, (3977), 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)
[2023-11-29 05:23:46,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:23:46,180 INFO  L93              Difference]: Finished difference Result 18085 states and 30088 transitions.
[2023-11-29 05:23:46,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:23:46,181 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 795.4) internal successors, (3977), 5 states have internal predecessors, (3977), 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 4632
[2023-11-29 05:23:46,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:23:46,193 INFO  L225             Difference]: With dead ends: 18085
[2023-11-29 05:23:46,193 INFO  L226             Difference]: Without dead ends: 12486
[2023-11-29 05:23:46,197 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:23:46,197 INFO  L413           NwaCegarLoop]: 11483 mSDtfsCounter, 9214 mSDsluCounter, 30530 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9214 SdHoareTripleChecker+Valid, 42013 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:23:46,197 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9214 Valid, 42013 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:23:46,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12486 states.
[2023-11-29 05:23:46,262 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12486 to 6945.
[2023-11-29 05:23:46,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6945 states, 6944 states have (on average 1.6640264976958525) internal successors, (11555), 6944 states have internal predecessors, (11555), 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)
[2023-11-29 05:23:46,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 11555 transitions.
[2023-11-29 05:23:46,274 INFO  L78                 Accepts]: Start accepts. Automaton has 6945 states and 11555 transitions. Word has length 4632
[2023-11-29 05:23:46,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:23:46,277 INFO  L495      AbstractCegarLoop]: Abstraction has 6945 states and 11555 transitions.
[2023-11-29 05:23:46,277 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 795.4) internal successors, (3977), 5 states have internal predecessors, (3977), 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)
[2023-11-29 05:23:46,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 6945 states and 11555 transitions.
[2023-11-29 05:23:46,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4634
[2023-11-29 05:23:46,480 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:23:46,484 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:23:46,484 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-29 05:23:46,484 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:23:46,485 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:23:46,486 INFO  L85        PathProgramCache]: Analyzing trace with hash 2049544012, now seen corresponding path program 1 times
[2023-11-29 05:23:46,486 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:23:46,486 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187214931]
[2023-11-29 05:23:46,487 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:23:46,487 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:23:50,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:03,288 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked.
[2023-11-29 05:24:03,288 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:03,289 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187214931]
[2023-11-29 05:24:03,289 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187214931] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:03,289 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:03,289 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:24:03,290 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493729018]
[2023-11-29 05:24:03,290 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:03,295 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:24:03,295 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:03,298 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:24:03,298 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:24:03,299 INFO  L87              Difference]: Start difference. First operand 6945 states and 11555 transitions. Second operand  has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 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)
[2023-11-29 05:24:03,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:03,544 INFO  L93              Difference]: Finished difference Result 18091 states and 30094 transitions.
[2023-11-29 05:24:03,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:24:03,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 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 4633
[2023-11-29 05:24:03,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:03,558 INFO  L225             Difference]: With dead ends: 18091
[2023-11-29 05:24:03,558 INFO  L226             Difference]: Without dead ends: 12487
[2023-11-29 05:24:03,562 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:24:03,563 INFO  L413           NwaCegarLoop]: 11478 mSDtfsCounter, 9211 mSDsluCounter, 30522 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9211 SdHoareTripleChecker+Valid, 42000 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:03,563 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9211 Valid, 42000 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:03,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12487 states.
[2023-11-29 05:24:03,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12487 to 6947.
[2023-11-29 05:24:03,632 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6947 states, 6946 states have (on average 1.6638353008926001) internal successors, (11557), 6946 states have internal predecessors, (11557), 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)
[2023-11-29 05:24:03,641 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 11557 transitions.
[2023-11-29 05:24:03,641 INFO  L78                 Accepts]: Start accepts. Automaton has 6947 states and 11557 transitions. Word has length 4633
[2023-11-29 05:24:03,643 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:03,643 INFO  L495      AbstractCegarLoop]: Abstraction has 6947 states and 11557 transitions.
[2023-11-29 05:24:03,644 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 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)
[2023-11-29 05:24:03,644 INFO  L276                IsEmpty]: Start isEmpty. Operand 6947 states and 11557 transitions.
[2023-11-29 05:24:03,733 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4635
[2023-11-29 05:24:03,733 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:03,735 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-29 05:24:03,735 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-11-29 05:24:03,736 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:03,736 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:03,737 INFO  L85        PathProgramCache]: Analyzing trace with hash 253943090, now seen corresponding path program 1 times
[2023-11-29 05:24:03,737 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:03,737 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715047190]
[2023-11-29 05:24:03,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:03,738 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:07,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:20,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked.
[2023-11-29 05:24:20,208 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:20,208 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715047190]
[2023-11-29 05:24:20,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715047190] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:20,209 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:20,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-29 05:24:20,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816046357]
[2023-11-29 05:24:20,210 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:20,213 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-29 05:24:20,213 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:20,216 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-29 05:24:20,216 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-29 05:24:20,217 INFO  L87              Difference]: Start difference. First operand 6947 states and 11557 transitions. Second operand  has 4 states, 4 states have (on average 995.75) internal successors, (3983), 4 states have internal predecessors, (3983), 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)
[2023-11-29 05:24:20,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:20,412 INFO  L93              Difference]: Finished difference Result 18097 states and 30100 transitions.
[2023-11-29 05:24:20,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:24:20,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 995.75) internal successors, (3983), 4 states have internal predecessors, (3983), 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 4634
[2023-11-29 05:24:20,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:20,425 INFO  L225             Difference]: With dead ends: 18097
[2023-11-29 05:24:20,425 INFO  L226             Difference]: Without dead ends: 12488
[2023-11-29 05:24:20,429 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:24:20,430 INFO  L413           NwaCegarLoop]: 11473 mSDtfsCounter, 9208 mSDsluCounter, 21307 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9208 SdHoareTripleChecker+Valid, 32780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:20,430 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9208 Valid, 32780 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:20,440 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12488 states.
[2023-11-29 05:24:20,498 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12488 to 6949.
[2023-11-29 05:24:20,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6949 states, 6948 states have (on average 1.6636442141623489) internal successors, (11559), 6948 states have internal predecessors, (11559), 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)
[2023-11-29 05:24:20,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6949 states to 6949 states and 11559 transitions.
[2023-11-29 05:24:20,511 INFO  L78                 Accepts]: Start accepts. Automaton has 6949 states and 11559 transitions. Word has length 4634
[2023-11-29 05:24:20,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:20,513 INFO  L495      AbstractCegarLoop]: Abstraction has 6949 states and 11559 transitions.
[2023-11-29 05:24:20,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 995.75) internal successors, (3983), 4 states have internal predecessors, (3983), 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)
[2023-11-29 05:24:20,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 6949 states and 11559 transitions.
[2023-11-29 05:24:20,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4636
[2023-11-29 05:24:20,603 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:20,605 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-29 05:24:20,605 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-29 05:24:20,605 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:20,605 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:20,606 INFO  L85        PathProgramCache]: Analyzing trace with hash 214641956, now seen corresponding path program 1 times
[2023-11-29 05:24:20,606 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:20,607 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476763305]
[2023-11-29 05:24:20,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:20,607 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:24:26,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:24:40,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked.
[2023-11-29 05:24:40,735 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:24:40,735 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476763305]
[2023-11-29 05:24:40,735 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476763305] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 05:24:40,735 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 05:24:40,736 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-29 05:24:40,737 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050076359]
[2023-11-29 05:24:40,737 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 05:24:40,741 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-29 05:24:40,741 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 05:24:40,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-29 05:24:40,746 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-29 05:24:40,747 INFO  L87              Difference]: Start difference. First operand 6949 states and 11559 transitions. Second operand  has 5 states, 5 states have (on average 797.2) internal successors, (3986), 5 states have internal predecessors, (3986), 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)
[2023-11-29 05:24:41,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 05:24:41,020 INFO  L93              Difference]: Finished difference Result 18103 states and 30106 transitions.
[2023-11-29 05:24:41,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-29 05:24:41,022 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 797.2) internal successors, (3986), 5 states have internal predecessors, (3986), 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 4635
[2023-11-29 05:24:41,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 05:24:41,034 INFO  L225             Difference]: With dead ends: 18103
[2023-11-29 05:24:41,035 INFO  L226             Difference]: Without dead ends: 12489
[2023-11-29 05:24:41,040 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-29 05:24:41,040 INFO  L413           NwaCegarLoop]: 11468 mSDtfsCounter, 9205 mSDsluCounter, 30506 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9205 SdHoareTripleChecker+Valid, 41974 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 05:24:41,041 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9205 Valid, 41974 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 05:24:41,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12489 states.
[2023-11-29 05:24:41,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 6951.
[2023-11-29 05:24:41,117 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6951 states, 6950 states have (on average 1.663453237410072) internal successors, (11561), 6950 states have internal predecessors, (11561), 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)
[2023-11-29 05:24:41,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 11561 transitions.
[2023-11-29 05:24:41,125 INFO  L78                 Accepts]: Start accepts. Automaton has 6951 states and 11561 transitions. Word has length 4635
[2023-11-29 05:24:41,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 05:24:41,128 INFO  L495      AbstractCegarLoop]: Abstraction has 6951 states and 11561 transitions.
[2023-11-29 05:24:41,128 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 797.2) internal successors, (3986), 5 states have internal predecessors, (3986), 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)
[2023-11-29 05:24:41,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 6951 states and 11561 transitions.
[2023-11-29 05:24:41,312 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4637
[2023-11-29 05:24:41,313 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 05:24:41,321 INFO  L195           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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 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1, 1]
[2023-11-29 05:24:41,322 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-11-29 05:24:41,322 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 05:24:41,323 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 05:24:41,324 INFO  L85        PathProgramCache]: Analyzing trace with hash -176089576, now seen corresponding path program 1 times
[2023-11-29 05:24:41,324 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 05:24:41,324 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627792244]
[2023-11-29 05:24:41,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:24:41,325 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 05:25:21,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 05:25:35,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 680 backedges. 2 proven. 314 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked.
[2023-11-29 05:25:35,192 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 05:25:35,192 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627792244]
[2023-11-29 05:25:35,192 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627792244] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-29 05:25:35,192 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323219251]
[2023-11-29 05:25:35,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 05:25:35,193 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-29 05:25:35,193 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 05:25:35,194 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-29 05:25:35,195 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0c65bee-3913-402d-a967-896bab8b8cc2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-29 05:25:39,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat