./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem101_label16.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_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/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_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem101_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/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_089249c9-a12c-443b-be96-48a70849561b/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 906ffe58b832ff4e782e44c7c61dd77e381780d7da434142e07131413944f85b
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-0e0057c
[2023-11-28 20:37:08,261 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-28 20:37:08,330 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-28 20:37:08,334 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-28 20:37:08,334 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-28 20:37:08,357 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-28 20:37:08,357 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-28 20:37:08,358 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-28 20:37:08,359 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-28 20:37:08,359 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-28 20:37:08,360 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-28 20:37:08,360 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-28 20:37:08,361 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-28 20:37:08,362 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-28 20:37:08,362 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-28 20:37:08,363 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-28 20:37:08,363 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-28 20:37:08,364 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-28 20:37:08,364 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-28 20:37:08,364 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-28 20:37:08,365 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-28 20:37:08,368 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-28 20:37:08,369 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-28 20:37:08,369 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-28 20:37:08,370 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-28 20:37:08,370 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-28 20:37:08,370 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-28 20:37:08,371 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-28 20:37:08,371 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-28 20:37:08,371 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-28 20:37:08,372 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-28 20:37:08,372 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:37:08,372 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-28 20:37:08,373 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-28 20:37:08,373 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-28 20:37:08,373 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-28 20:37:08,373 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-28 20:37:08,373 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-28 20:37:08,382 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-28 20:37:08,383 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-28 20:37:08,383 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-28 20:37:08,383 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-28 20:37:08,384 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_089249c9-a12c-443b-be96-48a70849561b/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_089249c9-a12c-443b-be96-48a70849561b/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 -> 906ffe58b832ff4e782e44c7c61dd77e381780d7da434142e07131413944f85b
[2023-11-28 20:37:08,597 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-28 20:37:08,618 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-28 20:37:08,621 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-28 20:37:08,622 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-28 20:37:08,622 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-28 20:37:08,624 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-programs/Problem101_label16.c
[2023-11-28 20:37:11,340 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-28 20:37:12,922 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-28 20:37:12,922 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/sv-benchmarks/c/eca-programs/Problem101_label16.c
[2023-11-28 20:37:13,080 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/data/72ce3be42/7a987fed22e54a86960034eb36a252d3/FLAG79212d4c0
[2023-11-28 20:37:13,095 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/data/72ce3be42/7a987fed22e54a86960034eb36a252d3
[2023-11-28 20:37:13,097 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-28 20:37:13,099 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-28 20:37:13,100 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-28 20:37:13,101 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-28 20:37:13,109 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-28 20:37:13,110 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:13" (1/1) ...
[2023-11-28 20:37:13,111 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a0d72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:13, skipping insertion in model container
[2023-11-28 20:37:13,111 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:13" (1/1) ...
[2023-11-28 20:37:14,104 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-28 20:37:24,975 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_089249c9-a12c-443b-be96-48a70849561b/sv-benchmarks/c/eca-programs/Problem101_label16.c[2767308,2767321]
[2023-11-28 20:37:25,040 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:37:25,050 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-28 20:37:31,639 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_089249c9-a12c-443b-be96-48a70849561b/sv-benchmarks/c/eca-programs/Problem101_label16.c[2767308,2767321]
[2023-11-28 20:37:31,654 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-28 20:37:32,386 INFO  L206         MainTranslator]: Completed translation
[2023-11-28 20:37:32,387 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32 WrapperNode
[2023-11-28 20:37:32,387 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-28 20:37:32,388 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-28 20:37:32,388 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-28 20:37:32,388 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-28 20:37:32,393 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:32,900 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:34,881 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83781
[2023-11-28 20:37:34,882 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-28 20:37:34,882 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-28 20:37:34,883 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-28 20:37:34,883 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-28 20:37:34,891 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:34,891 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:35,163 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:35,546 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].
[2023-11-28 20:37:35,547 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:35,547 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:36,527 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:36,717 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:36,819 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:36,907 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:37,194 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-28 20:37:37,195 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-28 20:37:37,195 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-28 20:37:37,195 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-28 20:37:37,196 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (1/1) ...
[2023-11-28 20:37:37,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-11-28 20:37:37,212 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/z3
[2023-11-28 20:37:37,224 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-11-28 20:37:37,226 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_089249c9-a12c-443b-be96-48a70849561b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-11-28 20:37:37,257 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-28 20:37:37,257 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-28 20:37:37,257 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-28 20:37:37,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-28 20:37:37,401 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-28 20:37:37,403 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-28 20:38:16,194 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-28 20:38:16,374 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-28 20:38:16,374 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-28 20:38:16,380 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:16 BoogieIcfgContainer
[2023-11-28 20:38:16,380 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-28 20:38:16,383 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-28 20:38:16,383 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-28 20:38:16,387 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-28 20:38:16,387 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:37:13" (1/3) ...
[2023-11-28 20:38:16,387 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28732d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:16, skipping insertion in model container
[2023-11-28 20:38:16,388 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:32" (2/3) ...
[2023-11-28 20:38:16,388 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e28732d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:16, skipping insertion in model container
[2023-11-28 20:38:16,388 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:16" (3/3) ...
[2023-11-28 20:38:16,389 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label16.c
[2023-11-28 20:38:16,408 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-28 20:38:16,408 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-28 20:38:16,579 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-28 20:38:16,585 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;@122ce14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-28 20:38:16,585 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-28 20:38:16,613 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)
[2023-11-28 20:38:17,265 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2023-11-28 20:38:17,266 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:38:17,271 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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[2023-11-28 20:38:17,274 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:38:17,283 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:38:17,288 INFO  L85        PathProgramCache]: Analyzing trace with hash -250727381, now seen corresponding path program 1 times
[2023-11-28 20:38:17,295 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:38:17,296 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723453131]
[2023-11-28 20:38:17,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:38:17,299 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:38:19,842 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:38:43,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:38:43,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:38:43,882 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723453131]
[2023-11-28 20:38:43,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723453131] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:38:43,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:38:43,884 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:38:43,885 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338185673]
[2023-11-28 20:38:43,886 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:38:43,899 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-28 20:38:43,899 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:38:43,933 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-28 20:38:43,933 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-28 20:38:43,959 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 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-11-28 20:38:44,292 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:38:44,292 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-28 20:38:44,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-28 20:38:44,299 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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 10090
[2023-11-28 20:38:44,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:38:44,383 INFO  L225             Difference]: With dead ends: 20389
[2023-11-28 20:38:44,383 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-28 20:38:44,401 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
[2023-11-28 20:38:44,404 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:38:44,405 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-28 20:38:44,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-28 20:38:44,614 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-28 20:38:44,637 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)
[2023-11-28 20:38:44,666 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-28 20:38:44,667 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10090
[2023-11-28 20:38:44,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:38:44,681 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-28 20:38:44,684 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-11-28 20:38:44,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-28 20:38:45,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2023-11-28 20:38:45,551 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:38:45,556 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]
[2023-11-28 20:38:45,557 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-28 20:38:45,557 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:38:45,558 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:38:45,563 INFO  L85        PathProgramCache]: Analyzing trace with hash -793486727, now seen corresponding path program 1 times
[2023-11-28 20:38:45,563 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:38:45,564 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788164080]
[2023-11-28 20:38:45,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:38:45,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:38:47,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:39:13,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:39:13,917 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:39:13,917 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788164080]
[2023-11-28 20:39:13,917 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788164080] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:39:13,917 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:39:13,919 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:39:13,919 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667584959]
[2023-11-28 20:39:13,919 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:39:13,926 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:39:13,927 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:39:13,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:39:13,935 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:39:13,939 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-11-28 20:39:50,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:39:50,205 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-11-28 20:39:50,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:39:50,207 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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 10090
[2023-11-28 20:39:50,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:39:50,326 INFO  L225             Difference]: With dead ends: 30575
[2023-11-28 20:39:50,327 INFO  L226             Difference]: Without dead ends: 20383
[2023-11-28 20:39:50,340 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
[2023-11-28 20:39:50,342 INFO  L413           NwaCegarLoop]: 4811 mSDtfsCounter, 3104 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29516 mSolverCounterSat, 11203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 40719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11203 IncrementalHoareTripleChecker+Valid, 29516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time
[2023-11-28 20:39:50,343 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3104 Valid, 4861 Invalid, 40719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11203 Valid, 29516 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time]
[2023-11-28 20:39:50,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-11-28 20:39:50,759 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-11-28 20:39:50,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.7563045824747325) internal successors, (35797), 20382 states have internal predecessors, (35797), 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)
[2023-11-28 20:39:50,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 35797 transitions.
[2023-11-28 20:39:50,811 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 35797 transitions. Word has length 10090
[2023-11-28 20:39:50,817 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:39:50,818 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 35797 transitions.
[2023-11-28 20:39:50,820 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-11-28 20:39:50,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 35797 transitions.
[2023-11-28 20:39:51,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2023-11-28 20:39:51,355 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:39:51,359 INFO  L195           NwaCegarLoop]: trace histogram [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, 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]
[2023-11-28 20:39:51,360 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-28 20:39:51,360 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:39:51,361 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:39:51,364 INFO  L85        PathProgramCache]: Analyzing trace with hash 790461206, now seen corresponding path program 1 times
[2023-11-28 20:39:51,365 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:39:51,365 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879957102]
[2023-11-28 20:39:51,366 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:39:51,366 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:39:52,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:40:15,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:40:15,111 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:40:15,111 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879957102]
[2023-11-28 20:40:15,111 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879957102] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:40:15,111 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:40:15,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:40:15,114 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517893207]
[2023-11-28 20:40:15,114 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:40:15,127 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:40:15,128 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:40:15,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:40:15,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:40:15,148 INFO  L87              Difference]: Start difference. First operand 20383 states and 35797 transitions. Second operand  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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)
[2023-11-28 20:40:51,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:40:51,856 INFO  L93              Difference]: Finished difference Result 61145 states and 107388 transitions.
[2023-11-28 20:40:51,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:40:51,858 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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 10096
[2023-11-28 20:40:51,859 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:40:51,908 INFO  L225             Difference]: With dead ends: 61145
[2023-11-28 20:40:51,908 INFO  L226             Difference]: Without dead ends: 40763
[2023-11-28 20:40:51,921 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
[2023-11-28 20:40:51,922 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28826 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time
[2023-11-28 20:40:51,923 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13685 Valid, 4866 Invalid, 40503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28826 Invalid, 0 Unknown, 0 Unchecked, 36.0s Time]
[2023-11-28 20:40:51,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-11-28 20:40:52,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-11-28 20:40:52,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.578529022128453) internal successors, (64344), 40762 states have internal predecessors, (64344), 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)
[2023-11-28 20:40:52,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 64344 transitions.
[2023-11-28 20:40:52,374 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 64344 transitions. Word has length 10096
[2023-11-28 20:40:52,376 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:40:52,376 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 64344 transitions.
[2023-11-28 20:40:52,378 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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)
[2023-11-28 20:40:52,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 64344 transitions.
[2023-11-28 20:40:53,040 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10125
[2023-11-28 20:40:53,040 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:40:53,045 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-28 20:40:53,045 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-28 20:40:53,045 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:40:53,046 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:40:53,049 INFO  L85        PathProgramCache]: Analyzing trace with hash 211803690, now seen corresponding path program 1 times
[2023-11-28 20:40:53,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:40:53,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083847089]
[2023-11-28 20:40:53,051 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:40:53,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:40:54,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:41:22,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-28 20:41:22,089 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:41:22,089 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083847089]
[2023-11-28 20:41:22,089 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083847089] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:41:22,089 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:41:22,091 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:41:22,091 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512883130]
[2023-11-28 20:41:22,091 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:41:22,103 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:41:22,103 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:41:22,111 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:41:22,111 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:41:22,114 INFO  L87              Difference]: Start difference. First operand 40763 states and 64344 transitions. Second operand  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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)
[2023-11-28 20:42:00,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:42:00,891 INFO  L93              Difference]: Finished difference Result 122285 states and 193029 transitions.
[2023-11-28 20:42:00,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:42:00,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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 10124
[2023-11-28 20:42:00,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:42:00,979 INFO  L225             Difference]: With dead ends: 122285
[2023-11-28 20:42:00,980 INFO  L226             Difference]: Without dead ends: 81523
[2023-11-28 20:42:01,009 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
[2023-11-28 20:42:01,010 INFO  L413           NwaCegarLoop]: 9507 mSDtfsCounter, 10242 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32554 mSolverCounterSat, 9364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10242 SdHoareTripleChecker+Valid, 9557 SdHoareTripleChecker+Invalid, 41918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9364 IncrementalHoareTripleChecker+Valid, 32554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time
[2023-11-28 20:42:01,011 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10242 Valid, 9557 Invalid, 41918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9364 Valid, 32554 Invalid, 0 Unknown, 0 Unchecked, 37.9s Time]
[2023-11-28 20:42:01,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-11-28 20:42:01,757 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-11-28 20:42:01,815 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.3586025858050588) internal successors, (110756), 81522 states have internal predecessors, (110756), 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)
[2023-11-28 20:42:01,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 110756 transitions.
[2023-11-28 20:42:01,908 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 110756 transitions. Word has length 10124
[2023-11-28 20:42:01,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:42:01,910 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 110756 transitions.
[2023-11-28 20:42:01,912 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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)
[2023-11-28 20:42:01,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 110756 transitions.
[2023-11-28 20:42:02,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10128
[2023-11-28 20:42:02,743 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:42:02,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-28 20:42:02,748 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-28 20:42:02,748 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:42:02,748 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:42:02,752 INFO  L85        PathProgramCache]: Analyzing trace with hash -265095119, now seen corresponding path program 1 times
[2023-11-28 20:42:02,752 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:42:02,752 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52018865]
[2023-11-28 20:42:02,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:42:02,754 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:42:04,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:42:28,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:42:28,759 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:42:28,759 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52018865]
[2023-11-28 20:42:28,760 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52018865] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:42:28,760 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:42:28,761 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:42:28,762 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961620316]
[2023-11-28 20:42:28,762 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:42:28,771 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:42:28,771 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:42:28,781 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:42:28,781 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:42:28,783 INFO  L87              Difference]: Start difference. First operand 81523 states and 110756 transitions. Second operand  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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)
[2023-11-28 20:43:07,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:43:07,801 INFO  L93              Difference]: Finished difference Result 244565 states and 332265 transitions.
[2023-11-28 20:43:07,801 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:43:07,803 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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 10127
[2023-11-28 20:43:07,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:43:07,969 INFO  L225             Difference]: With dead ends: 244565
[2023-11-28 20:43:07,969 INFO  L226             Difference]: Without dead ends: 163043
[2023-11-28 20:43:07,996 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
[2023-11-28 20:43:07,997 INFO  L413           NwaCegarLoop]: 7743 mSDtfsCounter, 12088 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27827 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12088 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 40857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time
[2023-11-28 20:43:07,998 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12088 Valid, 7792 Invalid, 40857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27827 Invalid, 0 Unknown, 0 Unchecked, 37.7s Time]
[2023-11-28 20:43:08,097 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-11-28 20:43:09,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-11-28 20:43:09,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.2584732768243765) internal successors, (205184), 163042 states have internal predecessors, (205184), 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)
[2023-11-28 20:43:09,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 205184 transitions.
[2023-11-28 20:43:09,631 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 205184 transitions. Word has length 10127
[2023-11-28 20:43:09,631 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:43:09,631 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 205184 transitions.
[2023-11-28 20:43:09,633 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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)
[2023-11-28 20:43:09,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 205184 transitions.
[2023-11-28 20:43:10,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10160
[2023-11-28 20:43:10,851 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:43:10,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2023-11-28 20:43:10,858 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-28 20:43:10,859 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:43:10,859 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:43:10,865 INFO  L85        PathProgramCache]: Analyzing trace with hash 2140806785, now seen corresponding path program 1 times
[2023-11-28 20:43:10,865 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:43:10,866 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203195317]
[2023-11-28 20:43:10,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:43:10,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:43:12,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:43:35,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:43:35,241 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:43:35,241 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203195317]
[2023-11-28 20:43:35,241 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203195317] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:43:35,241 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:43:35,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:43:35,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82680139]
[2023-11-28 20:43:35,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:43:35,256 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:43:35,256 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:43:35,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:43:35,267 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:43:35,269 INFO  L87              Difference]: Start difference. First operand 163043 states and 205184 transitions. Second operand  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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)
[2023-11-28 20:44:14,914 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:44:14,914 INFO  L93              Difference]: Finished difference Result 489125 states and 615549 transitions.
[2023-11-28 20:44:14,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:44:14,916 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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 10159
[2023-11-28 20:44:14,917 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:44:15,310 INFO  L225             Difference]: With dead ends: 489125
[2023-11-28 20:44:15,310 INFO  L226             Difference]: Without dead ends: 326083
[2023-11-28 20:44:15,385 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
[2023-11-28 20:44:15,386 INFO  L413           NwaCegarLoop]: 6786 mSDtfsCounter, 12407 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29267 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12407 SdHoareTripleChecker+Valid, 6835 SdHoareTripleChecker+Invalid, 41022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time
[2023-11-28 20:44:15,387 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12407 Valid, 6835 Invalid, 41022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29267 Invalid, 0 Unknown, 0 Unchecked, 37.5s Time]
[2023-11-28 20:44:15,600 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326083 states.
[2023-11-28 20:44:18,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326083 to 326083.
[2023-11-28 20:44:18,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326083 states, 326082 states have (on average 1.1961531148606792) internal successors, (390044), 326082 states have internal predecessors, (390044), 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)
[2023-11-28 20:44:18,839 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326083 states to 326083 states and 390044 transitions.
[2023-11-28 20:44:18,840 INFO  L78                 Accepts]: Start accepts. Automaton has 326083 states and 390044 transitions. Word has length 10159
[2023-11-28 20:44:18,840 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:44:18,840 INFO  L495      AbstractCegarLoop]: Abstraction has 326083 states and 390044 transitions.
[2023-11-28 20:44:18,842 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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)
[2023-11-28 20:44:18,842 INFO  L276                IsEmpty]: Start isEmpty. Operand 326083 states and 390044 transitions.
[2023-11-28 20:44:20,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10278
[2023-11-28 20:44:20,152 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:44:20,154 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-28 20:44:20,154 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-28 20:44:20,155 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:44:20,155 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:44:20,156 INFO  L85        PathProgramCache]: Analyzing trace with hash -1680760376, now seen corresponding path program 1 times
[2023-11-28 20:44:20,156 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:44:20,157 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841877458]
[2023-11-28 20:44:20,157 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:44:20,158 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:44:21,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:44:44,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-28 20:44:44,172 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:44:44,173 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841877458]
[2023-11-28 20:44:44,173 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841877458] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:44:44,173 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:44:44,174 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:44:44,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432834561]
[2023-11-28 20:44:44,174 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:44:44,179 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:44:44,179 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:44:44,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:44:44,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:44:44,187 INFO  L87              Difference]: Start difference. First operand 326083 states and 390044 transitions. Second operand  has 3 states, 3 states have (on average 3425.6666666666665) internal successors, (10277), 2 states have internal predecessors, (10277), 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)
[2023-11-28 20:45:27,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-28 20:45:27,450 INFO  L93              Difference]: Finished difference Result 978245 states and 1170129 transitions.
[2023-11-28 20:45:27,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-11-28 20:45:27,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3425.6666666666665) internal successors, (10277), 2 states have internal predecessors, (10277), 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 10277
[2023-11-28 20:45:27,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-28 20:45:28,120 INFO  L225             Difference]: With dead ends: 978245
[2023-11-28 20:45:28,120 INFO  L226             Difference]: Without dead ends: 652163
[2023-11-28 20:45:28,243 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
[2023-11-28 20:45:28,244 INFO  L413           NwaCegarLoop]: 8998 mSDtfsCounter, 10749 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31678 mSolverCounterSat, 10501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10749 SdHoareTripleChecker+Valid, 9047 SdHoareTripleChecker+Invalid, 42179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10501 IncrementalHoareTripleChecker+Valid, 31678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time
[2023-11-28 20:45:28,245 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10749 Valid, 9047 Invalid, 42179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10501 Valid, 31678 Invalid, 0 Unknown, 0 Unchecked, 39.7s Time]
[2023-11-28 20:45:28,680 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 652163 states.
[2023-11-28 20:45:33,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 652163 to 652163.
[2023-11-28 20:45:34,075 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 652163 states, 652162 states have (on average 1.1493984623452456) internal successors, (749594), 652162 states have internal predecessors, (749594), 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)
[2023-11-28 20:45:35,401 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 652163 states to 652163 states and 749594 transitions.
[2023-11-28 20:45:35,402 INFO  L78                 Accepts]: Start accepts. Automaton has 652163 states and 749594 transitions. Word has length 10277
[2023-11-28 20:45:35,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-28 20:45:35,402 INFO  L495      AbstractCegarLoop]: Abstraction has 652163 states and 749594 transitions.
[2023-11-28 20:45:35,404 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3425.6666666666665) internal successors, (10277), 2 states have internal predecessors, (10277), 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)
[2023-11-28 20:45:35,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 652163 states and 749594 transitions.
[2023-11-28 20:45:37,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10647
[2023-11-28 20:45:37,321 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-28 20:45:37,324 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-11-28 20:45:37,324 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-28 20:45:37,325 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-28 20:45:37,325 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-28 20:45:37,327 INFO  L85        PathProgramCache]: Analyzing trace with hash 862057344, now seen corresponding path program 1 times
[2023-11-28 20:45:37,327 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-28 20:45:37,327 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708676815]
[2023-11-28 20:45:37,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-28 20:45:37,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-28 20:45:38,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-28 20:46:02,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 636 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2023-11-28 20:46:02,888 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-28 20:46:02,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708676815]
[2023-11-28 20:46:02,888 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708676815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-28 20:46:02,888 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-28 20:46:02,890 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-28 20:46:02,890 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106328756]
[2023-11-28 20:46:02,890 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-28 20:46:02,894 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-28 20:46:02,895 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-28 20:46:03,208 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-28 20:46:03,208 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-28 20:46:03,210 INFO  L87              Difference]: Start difference. First operand 652163 states and 749594 transitions. Second operand  has 3 states, 3 states have (on average 3521.0) internal successors, (10563), 2 states have internal predecessors, (10563), 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)