./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c --full-output --architecture 32bit


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


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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/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 32bit --witnessprinter.graph.data.programhash 138fe3363990224d4ee1c993f67206032b375644ce625e0beb4bc6a3fb870415
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-29 00:00:18,896 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-29 00:00:18,960 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-29 00:00:18,965 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-29 00:00:18,966 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-29 00:00:18,993 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-29 00:00:18,993 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-29 00:00:18,994 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-29 00:00:18,995 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-29 00:00:18,995 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-29 00:00:18,996 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-29 00:00:18,996 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-29 00:00:18,997 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-29 00:00:18,998 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-29 00:00:18,998 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-29 00:00:18,999 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-29 00:00:18,999 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-29 00:00:19,000 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-29 00:00:19,000 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-29 00:00:19,000 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-29 00:00:19,001 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-29 00:00:19,002 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-29 00:00:19,002 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-29 00:00:19,002 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-29 00:00:19,003 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-29 00:00:19,003 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-29 00:00:19,004 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-29 00:00:19,004 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-29 00:00:19,005 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-29 00:00:19,005 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-29 00:00:19,005 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-29 00:00:19,006 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:00:19,006 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-29 00:00:19,007 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-29 00:00:19,007 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-29 00:00:19,007 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-29 00:00:19,008 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-29 00:00:19,008 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-29 00:00:19,009 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-29 00:00:19,009 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-29 00:00:19,009 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-29 00:00:19,010 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-29 00:00:19,010 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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe3363990224d4ee1c993f67206032b375644ce625e0beb4bc6a3fb870415
[2023-11-29 00:00:19,226 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-29 00:00:19,247 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-29 00:00:19,250 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-29 00:00:19,252 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-29 00:00:19,252 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-29 00:00:19,253 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem07_label03.c
[2023-11-29 00:00:21,976 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-29 00:00:23,393 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-29 00:00:23,393 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/sv-benchmarks/c/eca-rers2012/Problem07_label03.c
[2023-11-29 00:00:23,569 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/data/61afc6e2c/72aa6c24d3e44e2f8ce616a6bcef3615/FLAGc3334c942
[2023-11-29 00:00:23,582 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/data/61afc6e2c/72aa6c24d3e44e2f8ce616a6bcef3615
[2023-11-29 00:00:23,591 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-29 00:00:23,592 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-29 00:00:23,594 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-29 00:00:23,594 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-29 00:00:23,599 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-29 00:00:23,600 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:23" (1/1) ...
[2023-11-29 00:00:23,601 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f53be3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:23, skipping insertion in model container
[2023-11-29 00:00:23,601 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:23" (1/1) ...
[2023-11-29 00:00:24,452 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-29 00:00:35,530 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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/sv-benchmarks/c/eca-rers2012/Problem07_label03.c[2770520,2770533]
[2023-11-29 00:00:35,609 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:00:35,618 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-29 00:00:42,101 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_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/sv-benchmarks/c/eca-rers2012/Problem07_label03.c[2770520,2770533]
[2023-11-29 00:00:42,110 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-29 00:00:42,959 INFO  L206         MainTranslator]: Completed translation
[2023-11-29 00:00:42,960 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42 WrapperNode
[2023-11-29 00:00:42,960 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-29 00:00:42,961 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-29 00:00:42,961 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-29 00:00:42,961 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-29 00:00:42,966 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:43,312 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:44,975 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83774
[2023-11-29 00:00:44,976 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-29 00:00:44,977 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-29 00:00:44,977 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-29 00:00:44,977 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-29 00:00:44,988 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:44,989 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:45,416 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:45,761 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 00:00:45,761 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:45,761 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:46,782 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:47,059 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:47,195 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:47,310 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:47,752 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-29 00:00:47,754 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-29 00:00:47,754 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-29 00:00:47,754 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-29 00:00:47,755 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (1/1) ...
[2023-11-29 00:00:47,763 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-29 00:00:47,777 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-29 00:00:47,792 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-29 00:00:47,794 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f018c3-8d2f-4381-8dcc-1ffd1ab553ac/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-29 00:00:47,826 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-29 00:00:47,826 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-29 00:00:47,827 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-29 00:00:47,827 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-29 00:00:47,960 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-29 00:00:47,962 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-29 00:01:28,624 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-29 00:01:28,763 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-29 00:01:28,763 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-29 00:01:28,768 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:01:28 BoogieIcfgContainer
[2023-11-29 00:01:28,768 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-29 00:01:28,770 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-29 00:01:28,770 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-29 00:01:28,773 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-29 00:01:28,773 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:00:23" (1/3) ...
[2023-11-29 00:01:28,774 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ae3aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:01:28, skipping insertion in model container
[2023-11-29 00:01:28,774 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:42" (2/3) ...
[2023-11-29 00:01:28,774 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ae3aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:01:28, skipping insertion in model container
[2023-11-29 00:01:28,774 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:01:28" (3/3) ...
[2023-11-29 00:01:28,775 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label03.c
[2023-11-29 00:01:28,790 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-29 00:01:28,790 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-29 00:01:29,072 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-29 00:01:29,079 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;@176f31cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-29 00:01:29,079 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-29 00:01:29,116 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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 00:01:29,728 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10108
[2023-11-29 00:01:29,728 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:01:29,733 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, 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[2023-11-29 00:01:29,736 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:01:29,743 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:01:29,749 INFO  L85        PathProgramCache]: Analyzing trace with hash 51706276, now seen corresponding path program 1 times
[2023-11-29 00:01:29,755 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:01:29,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351164566]
[2023-11-29 00:01:29,759 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:01:29,760 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:01:32,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:01:57,551 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 00:01:57,552 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:01:57,553 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351164566]
[2023-11-29 00:01:57,553 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351164566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:01:57,554 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:01:57,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:01:57,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265194363]
[2023-11-29 00:01:57,558 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:01:57,575 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-29 00:01:57,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:01:57,611 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-29 00:01:57,611 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 00:01:57,651 INFO  L87              Difference]: Start difference. First operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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 2 states, 2 states have (on average 5053.5) internal successors, (10107), 2 states have internal predecessors, (10107), 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 00:01:58,001 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:01:58,002 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-29 00:01:58,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-29 00:01:58,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5053.5) internal successors, (10107), 2 states have internal predecessors, (10107), 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 10107
[2023-11-29 00:01:58,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:01:58,109 INFO  L225             Difference]: With dead ends: 20389
[2023-11-29 00:01:58,110 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-29 00:01:58,135 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-29 00:01:58,139 INFO  L413           NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-29 00:01:58,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-29 00:01:58,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-29 00:01:58,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-29 00:01:58,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 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 00:01:58,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-29 00:01:58,519 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10107
[2023-11-29 00:01:58,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:01:58,536 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-29 00:01:58,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5053.5) internal successors, (10107), 2 states have internal predecessors, (10107), 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 00:01:58,539 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-29 00:01:59,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10108
[2023-11-29 00:01:59,095 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:01:59,099 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, 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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]
[2023-11-29 00:01:59,100 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-29 00:01:59,100 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:01:59,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:01:59,109 INFO  L85        PathProgramCache]: Analyzing trace with hash -802406198, now seen corresponding path program 1 times
[2023-11-29 00:01:59,109 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:01:59,110 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52407014]
[2023-11-29 00:01:59,114 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:01:59,115 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:02:01,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:02:34,278 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 00:02:34,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:02:34,279 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52407014]
[2023-11-29 00:02:34,279 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52407014] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:02:34,279 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:02:34,281 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:02:34,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5927607]
[2023-11-29 00:02:34,281 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:02:34,298 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:02:34,299 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:02:34,307 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:02:34,308 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:02:34,311 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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 00:03:11,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:03:11,395 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-11-29 00:03:11,395 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:03:11,398 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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 10107
[2023-11-29 00:03:11,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:03:11,507 INFO  L225             Difference]: With dead ends: 30575
[2023-11-29 00:03:11,507 INFO  L226             Difference]: Without dead ends: 20383
[2023-11-29 00:03:11,516 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:03:11,517 INFO  L413           NwaCegarLoop]: 5063 mSDtfsCounter, 1962 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33508 mSolverCounterSat, 7005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 40513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7005 IncrementalHoareTripleChecker+Valid, 33508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time
[2023-11-29 00:03:11,518 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 5113 Invalid, 40513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7005 Valid, 33508 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time]
[2023-11-29 00:03:11,541 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-11-29 00:03:11,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-11-29 00:03:11,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.7445294868020802) internal successors, (35557), 20382 states have internal predecessors, (35557), 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 00:03:11,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 35557 transitions.
[2023-11-29 00:03:11,907 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 35557 transitions. Word has length 10107
[2023-11-29 00:03:11,917 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:03:11,918 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 35557 transitions.
[2023-11-29 00:03:11,919 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.0) internal successors, (10107), 2 states have internal predecessors, (10107), 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 00:03:11,920 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 35557 transitions.
[2023-11-29 00:03:12,688 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10112
[2023-11-29 00:03:12,689 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:03:12,694 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2023-11-29 00:03:12,694 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-29 00:03:12,694 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:03:12,695 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:03:12,698 INFO  L85        PathProgramCache]: Analyzing trace with hash -355410190, now seen corresponding path program 1 times
[2023-11-29 00:03:12,698 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:03:12,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802391414]
[2023-11-29 00:03:12,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:03:12,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:03:14,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:03:35,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:03:35,199 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:03:35,199 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802391414]
[2023-11-29 00:03:35,199 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802391414] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:03:35,199 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:03:35,200 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:03:35,200 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494338466]
[2023-11-29 00:03:35,200 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:03:35,207 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:03:35,207 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:03:35,217 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:03:35,217 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:03:35,220 INFO  L87              Difference]: Start difference. First operand 20383 states and 35557 transitions. Second operand  has 3 states, 3 states have (on average 3370.3333333333335) internal successors, (10111), 2 states have internal predecessors, (10111), 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 00:04:12,854 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:04:12,854 INFO  L93              Difference]: Finished difference Result 61145 states and 106668 transitions.
[2023-11-29 00:04:12,855 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:04:12,856 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3370.3333333333335) internal successors, (10111), 2 states have internal predecessors, (10111), 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 10111
[2023-11-29 00:04:12,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:04:12,932 INFO  L225             Difference]: With dead ends: 61145
[2023-11-29 00:04:12,933 INFO  L226             Difference]: Without dead ends: 40763
[2023-11-29 00:04:12,956 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:04:12,958 INFO  L413           NwaCegarLoop]: 4833 mSDtfsCounter, 13865 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28701 mSolverCounterSat, 11758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13865 SdHoareTripleChecker+Valid, 4882 SdHoareTripleChecker+Invalid, 40459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11758 IncrementalHoareTripleChecker+Valid, 28701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.9s IncrementalHoareTripleChecker+Time
[2023-11-29 00:04:12,959 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13865 Valid, 4882 Invalid, 40459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11758 Valid, 28701 Invalid, 0 Unknown, 0 Unchecked, 36.9s Time]
[2023-11-29 00:04:12,998 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-11-29 00:04:13,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-11-29 00:04:13,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.5682253078847948) internal successors, (63924), 40762 states have internal predecessors, (63924), 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 00:04:13,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 63924 transitions.
[2023-11-29 00:04:13,613 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 63924 transitions. Word has length 10111
[2023-11-29 00:04:13,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:04:13,616 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 63924 transitions.
[2023-11-29 00:04:13,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3370.3333333333335) internal successors, (10111), 2 states have internal predecessors, (10111), 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 00:04:13,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 63924 transitions.
[2023-11-29 00:04:14,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10113
[2023-11-29 00:04:14,300 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:04:14,304 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 00:04:14,305 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-29 00:04:14,305 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:04:14,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:04:14,308 INFO  L85        PathProgramCache]: Analyzing trace with hash 1323927138, now seen corresponding path program 1 times
[2023-11-29 00:04:14,308 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:04:14,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418060479]
[2023-11-29 00:04:14,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:04:14,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:04:15,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:04:36,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:04:36,840 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:04:36,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418060479]
[2023-11-29 00:04:36,840 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418060479] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:04:36,840 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:04:36,842 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:04:36,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40255688]
[2023-11-29 00:04:36,842 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:04:36,848 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:04:36,849 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:04:36,855 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:04:36,855 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:04:36,857 INFO  L87              Difference]: Start difference. First operand 40763 states and 63924 transitions. Second operand  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 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 00:05:14,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:05:14,779 INFO  L93              Difference]: Finished difference Result 122285 states and 191769 transitions.
[2023-11-29 00:05:14,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:05:14,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 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 10112
[2023-11-29 00:05:14,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:05:14,926 INFO  L225             Difference]: With dead ends: 122285
[2023-11-29 00:05:14,926 INFO  L226             Difference]: Without dead ends: 81523
[2023-11-29 00:05:14,972 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:05:14,974 INFO  L413           NwaCegarLoop]: 6212 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29361 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 41038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 29361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time
[2023-11-29 00:05:14,975 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12828 Valid, 6261 Invalid, 41038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 29361 Invalid, 0 Unknown, 0 Unchecked, 37.1s Time]
[2023-11-29 00:05:15,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-11-29 00:05:16,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-11-29 00:05:16,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.4373788670542922) internal successors, (117178), 81522 states have internal predecessors, (117178), 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 00:05:16,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 117178 transitions.
[2023-11-29 00:05:16,236 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 117178 transitions. Word has length 10112
[2023-11-29 00:05:16,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:05:16,238 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 117178 transitions.
[2023-11-29 00:05:16,240 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3370.6666666666665) internal successors, (10112), 2 states have internal predecessors, (10112), 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 00:05:16,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 117178 transitions.
[2023-11-29 00:05:17,076 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10119
[2023-11-29 00:05:17,076 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:05:17,081 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2023-11-29 00:05:17,081 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-29 00:05:17,082 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:05:17,082 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:05:17,086 INFO  L85        PathProgramCache]: Analyzing trace with hash -931984109, now seen corresponding path program 1 times
[2023-11-29 00:05:17,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:05:17,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823995838]
[2023-11-29 00:05:17,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:05:17,089 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:05:18,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:05:39,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:05:39,853 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:05:39,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823995838]
[2023-11-29 00:05:39,853 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823995838] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:05:39,854 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:05:39,855 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:05:39,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017816384]
[2023-11-29 00:05:39,855 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:05:39,864 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:05:39,864 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:05:39,873 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:05:39,874 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:05:39,876 INFO  L87              Difference]: Start difference. First operand 81523 states and 117178 transitions. Second operand  has 3 states, 3 states have (on average 3372.6666666666665) internal successors, (10118), 2 states have internal predecessors, (10118), 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 00:06:19,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:06:19,292 INFO  L93              Difference]: Finished difference Result 244565 states and 351531 transitions.
[2023-11-29 00:06:19,292 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:06:19,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3372.6666666666665) internal successors, (10118), 2 states have internal predecessors, (10118), 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 10118
[2023-11-29 00:06:19,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:06:19,449 INFO  L225             Difference]: With dead ends: 244565
[2023-11-29 00:06:19,449 INFO  L226             Difference]: Without dead ends: 163043
[2023-11-29 00:06:19,480 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:06:19,481 INFO  L413           NwaCegarLoop]: 6166 mSDtfsCounter, 13400 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27534 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13400 SdHoareTripleChecker+Valid, 6215 SdHoareTripleChecker+Invalid, 40564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:06:19,482 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13400 Valid, 6215 Invalid, 40564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27534 Invalid, 0 Unknown, 0 Unchecked, 38.2s Time]
[2023-11-29 00:06:19,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-11-29 00:06:20,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-11-29 00:06:20,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.313771911531998) internal successors, (214200), 163042 states have internal predecessors, (214200), 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 00:06:21,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 214200 transitions.
[2023-11-29 00:06:21,299 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 214200 transitions. Word has length 10118
[2023-11-29 00:06:21,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:06:21,300 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 214200 transitions.
[2023-11-29 00:06:21,302 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3372.6666666666665) internal successors, (10118), 2 states have internal predecessors, (10118), 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 00:06:21,303 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 214200 transitions.
[2023-11-29 00:06:22,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10129
[2023-11-29 00:06:22,069 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:06:22,072 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2023-11-29 00:06:22,073 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-29 00:06:22,073 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:06:22,073 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:06:22,077 INFO  L85        PathProgramCache]: Analyzing trace with hash 513615930, now seen corresponding path program 1 times
[2023-11-29 00:06:22,078 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:06:22,078 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007645252]
[2023-11-29 00:06:22,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:06:22,079 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:06:23,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:06:50,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:06:50,618 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:06:50,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007645252]
[2023-11-29 00:06:50,618 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007645252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:06:50,618 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:06:50,620 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:06:50,620 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775742252]
[2023-11-29 00:06:50,620 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:06:50,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:06:50,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:06:50,634 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:06:50,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:06:50,637 INFO  L87              Difference]: Start difference. First operand 163043 states and 214200 transitions. Second operand  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 00:07:27,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:07:27,446 INFO  L93              Difference]: Finished difference Result 407605 states and 527575 transitions.
[2023-11-29 00:07:27,446 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:07:27,448 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 10128
[2023-11-29 00:07:27,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:07:27,763 INFO  L225             Difference]: With dead ends: 407605
[2023-11-29 00:07:27,763 INFO  L226             Difference]: Without dead ends: 244563
[2023-11-29 00:07:27,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:07:27,817 INFO  L413           NwaCegarLoop]: 8005 mSDtfsCounter, 11128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28481 mSolverCounterSat, 7491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11128 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 35972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7491 IncrementalHoareTripleChecker+Valid, 28481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time
[2023-11-29 00:07:27,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11128 Valid, 8054 Invalid, 35972 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7491 Valid, 28481 Invalid, 0 Unknown, 0 Unchecked, 35.2s Time]
[2023-11-29 00:07:28,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 244563 states.
[2023-11-29 00:07:29,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 244563 to 244563.
[2023-11-29 00:07:30,050 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 244563 states, 244562 states have (on average 1.2438890751629443) internal successors, (304208), 244562 states have internal predecessors, (304208), 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 00:07:30,306 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 244563 states to 244563 states and 304208 transitions.
[2023-11-29 00:07:30,306 INFO  L78                 Accepts]: Start accepts. Automaton has 244563 states and 304208 transitions. Word has length 10128
[2023-11-29 00:07:30,306 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:07:30,306 INFO  L495      AbstractCegarLoop]: Abstraction has 244563 states and 304208 transitions.
[2023-11-29 00:07:30,308 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3376.0) internal successors, (10128), 2 states have internal predecessors, (10128), 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 00:07:30,308 INFO  L276                IsEmpty]: Start isEmpty. Operand 244563 states and 304208 transitions.
[2023-11-29 00:07:31,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10158
[2023-11-29 00:07:31,445 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:07:31,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 00:07:31,448 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-29 00:07:31,448 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:07:31,448 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:07:31,450 INFO  L85        PathProgramCache]: Analyzing trace with hash -1021013857, now seen corresponding path program 1 times
[2023-11-29 00:07:31,450 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:07:31,450 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017988563]
[2023-11-29 00:07:31,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:07:31,451 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:07:32,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:07:52,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:07:52,088 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:07:52,088 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017988563]
[2023-11-29 00:07:52,088 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017988563] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:07:52,088 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:07:52,090 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:07:52,090 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887716469]
[2023-11-29 00:07:52,090 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:07:52,097 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:07:52,097 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:07:52,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:07:52,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:07:52,109 INFO  L87              Difference]: Start difference. First operand 244563 states and 304208 transitions. Second operand  has 3 states, 3 states have (on average 3385.6666666666665) internal successors, (10157), 2 states have internal predecessors, (10157), 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 00:08:34,124 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:08:34,124 INFO  L93              Difference]: Finished difference Result 733685 states and 912621 transitions.
[2023-11-29 00:08:34,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:08:34,126 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3385.6666666666665) internal successors, (10157), 2 states have internal predecessors, (10157), 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 10157
[2023-11-29 00:08:34,126 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:08:34,661 INFO  L225             Difference]: With dead ends: 733685
[2023-11-29 00:08:34,661 INFO  L226             Difference]: Without dead ends: 489123
[2023-11-29 00:08:34,892 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:08:34,895 INFO  L413           NwaCegarLoop]: 7235 mSDtfsCounter, 11831 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30503 mSolverCounterSat, 11086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11831 SdHoareTripleChecker+Valid, 7284 SdHoareTripleChecker+Invalid, 41589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11086 IncrementalHoareTripleChecker+Valid, 30503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time
[2023-11-29 00:08:34,896 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11831 Valid, 7284 Invalid, 41589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11086 Valid, 30503 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time]
[2023-11-29 00:08:35,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 489123 states.
[2023-11-29 00:08:39,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 489123 to 489123.
[2023-11-29 00:08:39,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 489123 states, 489122 states have (on average 1.1869472238010148) internal successors, (580562), 489122 states have internal predecessors, (580562), 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 00:08:39,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 489123 states to 489123 states and 580562 transitions.
[2023-11-29 00:08:39,929 INFO  L78                 Accepts]: Start accepts. Automaton has 489123 states and 580562 transitions. Word has length 10157
[2023-11-29 00:08:39,929 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:08:39,929 INFO  L495      AbstractCegarLoop]: Abstraction has 489123 states and 580562 transitions.
[2023-11-29 00:08:39,931 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3385.6666666666665) internal successors, (10157), 2 states have internal predecessors, (10157), 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 00:08:39,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 489123 states and 580562 transitions.
[2023-11-29 00:08:41,429 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10248
[2023-11-29 00:08:41,429 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-29 00:08:41,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-29 00:08:41,431 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-29 00:08:41,431 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-29 00:08:41,432 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-29 00:08:41,433 INFO  L85        PathProgramCache]: Analyzing trace with hash 203839774, now seen corresponding path program 1 times
[2023-11-29 00:08:41,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-29 00:08:41,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110283633]
[2023-11-29 00:08:41,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-29 00:08:41,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-29 00:08:42,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-29 00:09:02,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-29 00:09:02,547 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-29 00:09:02,547 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110283633]
[2023-11-29 00:09:02,547 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110283633] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-29 00:09:02,547 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-29 00:09:02,548 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-29 00:09:02,548 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329906002]
[2023-11-29 00:09:02,548 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-29 00:09:02,553 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-29 00:09:02,553 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-29 00:09:02,558 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-29 00:09:02,558 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:09:02,560 INFO  L87              Difference]: Start difference. First operand 489123 states and 580562 transitions. Second operand  has 3 states, 3 states have (on average 3415.6666666666665) internal successors, (10247), 2 states have internal predecessors, (10247), 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 00:09:44,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-29 00:09:44,036 INFO  L93              Difference]: Finished difference Result 1467365 states and 1741683 transitions.
[2023-11-29 00:09:44,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-29 00:09:44,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3415.6666666666665) internal successors, (10247), 2 states have internal predecessors, (10247), 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 10247
[2023-11-29 00:09:44,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-29 00:09:45,265 INFO  L225             Difference]: With dead ends: 1467365
[2023-11-29 00:09:45,266 INFO  L226             Difference]: Without dead ends: 978243
[2023-11-29 00:09:45,476 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-29 00:09:45,477 INFO  L413           NwaCegarLoop]: 6464 mSDtfsCounter, 12329 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 30672 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12329 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 41173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 30672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time
[2023-11-29 00:09:45,477 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12329 Valid, 6513 Invalid, 41173 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 30672 Invalid, 0 Unknown, 0 Unchecked, 36.7s Time]
[2023-11-29 00:09:46,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 978243 states.
[2023-11-29 00:09:54,443 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 978243 to 978243.
[2023-11-29 00:09:55,003 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 978243 states, 978242 states have (on average 1.1423635460346213) internal successors, (1117508), 978242 states have internal predecessors, (1117508), 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 00:09:56,827 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 978243 states to 978243 states and 1117508 transitions.
[2023-11-29 00:09:56,827 INFO  L78                 Accepts]: Start accepts. Automaton has 978243 states and 1117508 transitions. Word has length 10247
[2023-11-29 00:09:56,828 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-29 00:09:56,828 INFO  L495      AbstractCegarLoop]: Abstraction has 978243 states and 1117508 transitions.
[2023-11-29 00:09:56,830 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3415.6666666666665) internal successors, (10247), 2 states have internal predecessors, (10247), 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 00:09:56,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 978243 states and 1117508 transitions.