./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7fa1bdae56b6efd47000ddaf165b6bdba81ba7fc55edf9236eb8f83ebd1d8c6f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 21:53:35,908 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 21:53:36,035 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 21:53:36,041 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 21:53:36,042 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 21:53:36,077 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 21:53:36,078 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 21:53:36,079 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 21:53:36,080 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 21:53:36,085 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 21:53:36,087 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 21:53:36,087 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 21:53:36,088 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 21:53:36,090 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 21:53:36,090 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 21:53:36,091 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 21:53:36,091 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 21:53:36,092 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 21:53:36,092 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 21:53:36,093 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 21:53:36,093 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 21:53:36,094 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 21:53:36,095 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 21:53:36,097 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 21:53:36,097 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 21:53:36,098 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 21:53:36,098 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 21:53:36,099 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 21:53:36,099 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 21:53:36,100 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 21:53:36,101 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 21:53:36,101 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 21:53:36,101 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 21:53:36,101 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 21:53:36,102 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 21:53:36,102 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 21:53:36,102 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_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/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_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fa1bdae56b6efd47000ddaf165b6bdba81ba7fc55edf9236eb8f83ebd1d8c6f
[2023-11-06 21:53:36,436 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 21:53:36,470 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 21:53:36,473 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 21:53:36,474 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 21:53:36,475 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 21:53:36,477 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c
[2023-11-06 21:53:39,718 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 21:53:40,239 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 21:53:40,239 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c
[2023-11-06 21:53:40,275 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/data/34b559d66/326c3f6366a44c8d8a1e60bb0af1ed05/FLAG5d30f5303
[2023-11-06 21:53:40,293 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/data/34b559d66/326c3f6366a44c8d8a1e60bb0af1ed05
[2023-11-06 21:53:40,296 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 21:53:40,298 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 21:53:40,304 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 21:53:40,305 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 21:53:40,312 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 21:53:40,312 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:40" (1/1) ...
[2023-11-06 21:53:40,314 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efd6b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:40, skipping insertion in model container
[2023-11-06 21:53:40,314 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:40" (1/1) ...
[2023-11-06 21:53:40,429 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 21:53:40,668 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_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c[1181,1194]
[2023-11-06 21:53:41,479 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 21:53:41,490 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 21:53:41,502 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_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c[1181,1194]
[2023-11-06 21:53:41,903 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 21:53:41,920 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 21:53:41,921 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41 WrapperNode
[2023-11-06 21:53:41,921 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 21:53:41,922 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 21:53:41,922 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 21:53:41,922 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 21:53:41,930 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:42,095 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:43,458 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 13169
[2023-11-06 21:53:43,464 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 21:53:43,465 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 21:53:43,465 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 21:53:43,466 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 21:53:43,477 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:43,478 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,034 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,034 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,414 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,499 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,678 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:44,729 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:45,088 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 21:53:45,089 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 21:53:45,090 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 21:53:45,090 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 21:53:45,091 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (1/1) ...
[2023-11-06 21:53:45,099 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 21:53:45,112 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 21:53:45,133 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 21:53:45,159 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_744a7310-3ab1-42bb-b7aa-9818fdbaa3be/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 21:53:45,170 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 21:53:45,171 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 21:53:45,172 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 21:53:45,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 21:53:46,180 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 21:53:46,181 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 21:53:54,815 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 21:53:54,840 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 21:53:54,841 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 21:53:54,848 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:54 BoogieIcfgContainer
[2023-11-06 21:53:54,848 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 21:53:54,851 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 21:53:54,851 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 21:53:54,854 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 21:53:54,855 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:40" (1/3) ...
[2023-11-06 21:53:54,856 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b9e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:54, skipping insertion in model container
[2023-11-06 21:53:54,856 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:41" (2/3) ...
[2023-11-06 21:53:54,857 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b9e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:54, skipping insertion in model container
[2023-11-06 21:53:54,857 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:54" (3/3) ...
[2023-11-06 21:53:54,858 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.4.prop1-back-serstep.c
[2023-11-06 21:53:54,879 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 21:53:54,879 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 21:53:54,990 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 21:53:54,998 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=LoopsAndPotentialCycles, 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;@50798741, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 21:53:54,998 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 21:53:55,013 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2687 states, 2685 states have (on average 1.6659217877094972) internal successors, (4473), 2686 states have internal predecessors, (4473), 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)
[2023-11-06 21:53:55,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2023-11-06 21:53:55,038 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:53:55,039 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]
[2023-11-06 21:53:55,040 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:53:55,045 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:53:55,046 INFO  L85        PathProgramCache]: Analyzing trace with hash -1013022773, now seen corresponding path program 1 times
[2023-11-06 21:53:55,055 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:53:55,055 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828915184]
[2023-11-06 21:53:55,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:53:55,057 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:53:55,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:53:57,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:53:57,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:53:57,402 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828915184]
[2023-11-06 21:53:57,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828915184] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:53:57,403 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:53:57,404 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:53:57,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515811751]
[2023-11-06 21:53:57,406 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:53:57,415 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:53:57,415 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:53:57,462 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:53:57,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:53:57,475 INFO  L87              Difference]: Start difference. First operand  has 2687 states, 2685 states have (on average 1.6659217877094972) internal successors, (4473), 2686 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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)
[2023-11-06 21:53:57,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:53:57,795 INFO  L93              Difference]: Finished difference Result 5283 states and 8799 transitions.
[2023-11-06 21:53:57,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:53:57,798 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 293
[2023-11-06 21:53:57,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:53:57,855 INFO  L225             Difference]: With dead ends: 5283
[2023-11-06 21:53:57,855 INFO  L226             Difference]: Without dead ends: 2685
[2023-11-06 21:53:57,870 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:53:57,875 INFO  L413           NwaCegarLoop]: 4465 mSDtfsCounter, 1 mSDsluCounter, 8924 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13389 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:53:57,876 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13389 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:53:57,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2685 states.
[2023-11-06 21:53:58,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685.
[2023-11-06 21:53:58,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2685 states, 2684 states have (on average 1.6650521609538003) internal successors, (4469), 2684 states have internal predecessors, (4469), 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)
[2023-11-06 21:53:58,070 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 4469 transitions.
[2023-11-06 21:53:58,072 INFO  L78                 Accepts]: Start accepts. Automaton has 2685 states and 4469 transitions. Word has length 293
[2023-11-06 21:53:58,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:53:58,074 INFO  L495      AbstractCegarLoop]: Abstraction has 2685 states and 4469 transitions.
[2023-11-06 21:53:58,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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)
[2023-11-06 21:53:58,075 INFO  L276                IsEmpty]: Start isEmpty. Operand 2685 states and 4469 transitions.
[2023-11-06 21:53:58,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 295
[2023-11-06 21:53:58,083 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:53:58,083 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]
[2023-11-06 21:53:58,084 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 21:53:58,084 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:53:58,085 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:53:58,085 INFO  L85        PathProgramCache]: Analyzing trace with hash -1337208215, now seen corresponding path program 1 times
[2023-11-06 21:53:58,086 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:53:58,086 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751439711]
[2023-11-06 21:53:58,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:53:58,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:53:58,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:53:59,144 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:53:59,144 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:53:59,145 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751439711]
[2023-11-06 21:53:59,145 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751439711] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:53:59,145 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:53:59,146 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:53:59,146 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723185731]
[2023-11-06 21:53:59,146 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:53:59,150 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:53:59,150 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:53:59,151 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:53:59,152 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:53:59,152 INFO  L87              Difference]: Start difference. First operand 2685 states and 4469 transitions. Second operand  has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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)
[2023-11-06 21:53:59,352 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:53:59,352 INFO  L93              Difference]: Finished difference Result 5284 states and 8795 transitions.
[2023-11-06 21:53:59,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 21:53:59,354 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 294
[2023-11-06 21:53:59,356 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:53:59,373 INFO  L225             Difference]: With dead ends: 5284
[2023-11-06 21:53:59,373 INFO  L226             Difference]: Without dead ends: 2688
[2023-11-06 21:53:59,382 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:53:59,386 INFO  L413           NwaCegarLoop]: 4465 mSDtfsCounter, 1 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13386 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:53:59,386 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13386 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:53:59,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2688 states.
[2023-11-06 21:53:59,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2687.
[2023-11-06 21:53:59,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2687 states, 2686 states have (on average 1.6645569620253164) internal successors, (4471), 2686 states have internal predecessors, (4471), 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)
[2023-11-06 21:53:59,476 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 4471 transitions.
[2023-11-06 21:53:59,476 INFO  L78                 Accepts]: Start accepts. Automaton has 2687 states and 4471 transitions. Word has length 294
[2023-11-06 21:53:59,478 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:53:59,478 INFO  L495      AbstractCegarLoop]: Abstraction has 2687 states and 4471 transitions.
[2023-11-06 21:53:59,479 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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)
[2023-11-06 21:53:59,479 INFO  L276                IsEmpty]: Start isEmpty. Operand 2687 states and 4471 transitions.
[2023-11-06 21:53:59,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2023-11-06 21:53:59,485 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:53:59,485 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]
[2023-11-06 21:53:59,486 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 21:53:59,486 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:53:59,487 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:53:59,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 1285787557, now seen corresponding path program 1 times
[2023-11-06 21:53:59,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:53:59,488 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113399116]
[2023-11-06 21:53:59,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:53:59,489 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:53:59,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:00,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:54:00,510 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:00,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113399116]
[2023-11-06 21:54:00,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113399116] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:00,512 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:00,512 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:54:00,512 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23830707]
[2023-11-06 21:54:00,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:00,513 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:54:00,513 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:00,515 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:54:00,515 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:54:00,515 INFO  L87              Difference]: Start difference. First operand 2687 states and 4471 transitions. Second operand  has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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)
[2023-11-06 21:54:00,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:00,769 INFO  L93              Difference]: Finished difference Result 7877 states and 13110 transitions.
[2023-11-06 21:54:00,769 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:00,770 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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 295
[2023-11-06 21:54:00,771 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:00,802 INFO  L225             Difference]: With dead ends: 7877
[2023-11-06 21:54:00,802 INFO  L226             Difference]: Without dead ends: 5279
[2023-11-06 21:54:00,809 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:00,815 INFO  L413           NwaCegarLoop]: 5030 mSDtfsCounter, 4311 mSDsluCounter, 9484 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4311 SdHoareTripleChecker+Valid, 14514 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:00,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4311 Valid, 14514 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:00,826 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5279 states.
[2023-11-06 21:54:00,889 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 2689.
[2023-11-06 21:54:00,896 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2689 states, 2688 states have (on average 1.6640625) internal successors, (4473), 2688 states have internal predecessors, (4473), 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)
[2023-11-06 21:54:00,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4473 transitions.
[2023-11-06 21:54:00,908 INFO  L78                 Accepts]: Start accepts. Automaton has 2689 states and 4473 transitions. Word has length 295
[2023-11-06 21:54:00,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:00,910 INFO  L495      AbstractCegarLoop]: Abstraction has 2689 states and 4473 transitions.
[2023-11-06 21:54:00,911 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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)
[2023-11-06 21:54:00,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 2689 states and 4473 transitions.
[2023-11-06 21:54:00,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 297
[2023-11-06 21:54:00,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:00,919 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]
[2023-11-06 21:54:00,919 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 21:54:00,920 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:00,922 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:00,923 INFO  L85        PathProgramCache]: Analyzing trace with hash -1883377203, now seen corresponding path program 1 times
[2023-11-06 21:54:00,924 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:00,929 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110995609]
[2023-11-06 21:54:00,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:00,930 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:01,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:01,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:54:01,850 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:01,850 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110995609]
[2023-11-06 21:54:01,850 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110995609] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:01,850 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:01,851 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:54:01,852 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402921771]
[2023-11-06 21:54:01,852 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:01,852 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:54:01,853 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:01,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:54:01,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:54:01,854 INFO  L87              Difference]: Start difference. First operand 2689 states and 4473 transitions. Second operand  has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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)
[2023-11-06 21:54:02,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:02,104 INFO  L93              Difference]: Finished difference Result 7880 states and 13111 transitions.
[2023-11-06 21:54:02,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:02,104 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 296
[2023-11-06 21:54:02,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:02,134 INFO  L225             Difference]: With dead ends: 7880
[2023-11-06 21:54:02,134 INFO  L226             Difference]: Without dead ends: 5280
[2023-11-06 21:54:02,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:02,140 INFO  L413           NwaCegarLoop]: 5025 mSDtfsCounter, 4308 mSDsluCounter, 9479 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 14504 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:02,141 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 14504 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:02,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5280 states.
[2023-11-06 21:54:02,217 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 2691.
[2023-11-06 21:54:02,224 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2691 states, 2690 states have (on average 1.6635687732342008) internal successors, (4475), 2690 states have internal predecessors, (4475), 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)
[2023-11-06 21:54:02,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 4475 transitions.
[2023-11-06 21:54:02,235 INFO  L78                 Accepts]: Start accepts. Automaton has 2691 states and 4475 transitions. Word has length 296
[2023-11-06 21:54:02,235 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:02,236 INFO  L495      AbstractCegarLoop]: Abstraction has 2691 states and 4475 transitions.
[2023-11-06 21:54:02,236 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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)
[2023-11-06 21:54:02,236 INFO  L276                IsEmpty]: Start isEmpty. Operand 2691 states and 4475 transitions.
[2023-11-06 21:54:02,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 298
[2023-11-06 21:54:02,241 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:02,241 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]
[2023-11-06 21:54:02,241 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 21:54:02,242 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:02,242 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:02,242 INFO  L85        PathProgramCache]: Analyzing trace with hash -2132398147, now seen corresponding path program 1 times
[2023-11-06 21:54:02,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:02,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141789812]
[2023-11-06 21:54:02,243 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:02,243 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:02,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:03,293 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-06 21:54:03,293 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:03,294 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141789812]
[2023-11-06 21:54:03,294 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141789812] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:03,294 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:03,294 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 21:54:03,294 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993801521]
[2023-11-06 21:54:03,295 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:03,295 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 21:54:03,295 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:03,296 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 21:54:03,297 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:54:03,297 INFO  L87              Difference]: Start difference. First operand 2691 states and 4475 transitions. Second operand  has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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)
[2023-11-06 21:54:03,659 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:03,660 INFO  L93              Difference]: Finished difference Result 8230 states and 13689 transitions.
[2023-11-06 21:54:03,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 21:54:03,661 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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 297
[2023-11-06 21:54:03,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:03,693 INFO  L225             Difference]: With dead ends: 8230
[2023-11-06 21:54:03,693 INFO  L226             Difference]: Without dead ends: 5628
[2023-11-06 21:54:03,698 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-11-06 21:54:03,699 INFO  L413           NwaCegarLoop]: 5029 mSDtfsCounter, 17680 mSDsluCounter, 13947 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17680 SdHoareTripleChecker+Valid, 18976 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:03,700 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17680 Valid, 18976 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:03,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5628 states.
[2023-11-06 21:54:03,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 3030.
[2023-11-06 21:54:03,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3030 states, 3029 states have (on average 1.663915483657973) internal successors, (5040), 3029 states have internal predecessors, (5040), 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)
[2023-11-06 21:54:03,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 5040 transitions.
[2023-11-06 21:54:03,804 INFO  L78                 Accepts]: Start accepts. Automaton has 3030 states and 5040 transitions. Word has length 297
[2023-11-06 21:54:03,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:03,804 INFO  L495      AbstractCegarLoop]: Abstraction has 3030 states and 5040 transitions.
[2023-11-06 21:54:03,805 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 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)
[2023-11-06 21:54:03,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 3030 states and 5040 transitions.
[2023-11-06 21:54:03,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2027
[2023-11-06 21:54:03,935 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:03,936 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:54:03,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-06 21:54:03,937 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:03,938 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:03,939 INFO  L85        PathProgramCache]: Analyzing trace with hash -1185823218, now seen corresponding path program 1 times
[2023-11-06 21:54:03,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:03,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908353093]
[2023-11-06 21:54:03,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:03,940 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:08,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:17,766 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-11-06 21:54:17,767 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:17,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908353093]
[2023-11-06 21:54:17,768 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908353093] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:17,768 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:17,768 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:54:17,769 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901470299]
[2023-11-06 21:54:17,769 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:17,772 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:54:17,772 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:17,775 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:54:17,775 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:17,777 INFO  L87              Difference]: Start difference. First operand 3030 states and 5040 transitions. Second operand  has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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)
[2023-11-06 21:54:18,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:18,012 INFO  L93              Difference]: Finished difference Result 8228 states and 13687 transitions.
[2023-11-06 21:54:18,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:18,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 2026
[2023-11-06 21:54:18,018 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:18,058 INFO  L225             Difference]: With dead ends: 8228
[2023-11-06 21:54:18,058 INFO  L226             Difference]: Without dead ends: 5622
[2023-11-06 21:54:18,064 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:54:18,065 INFO  L413           NwaCegarLoop]: 5020 mSDtfsCounter, 4305 mSDsluCounter, 14490 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 19510 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:18,066 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4305 Valid, 19510 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:18,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5622 states.
[2023-11-06 21:54:18,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5622 to 3032.
[2023-11-06 21:54:18,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3032 states, 3031 states have (on average 1.6634774001979544) internal successors, (5042), 3031 states have internal predecessors, (5042), 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)
[2023-11-06 21:54:18,362 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5042 transitions.
[2023-11-06 21:54:18,363 INFO  L78                 Accepts]: Start accepts. Automaton has 3032 states and 5042 transitions. Word has length 2026
[2023-11-06 21:54:18,367 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:18,367 INFO  L495      AbstractCegarLoop]: Abstraction has 3032 states and 5042 transitions.
[2023-11-06 21:54:18,368 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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)
[2023-11-06 21:54:18,368 INFO  L276                IsEmpty]: Start isEmpty. Operand 3032 states and 5042 transitions.
[2023-11-06 21:54:18,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2028
[2023-11-06 21:54:18,561 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:18,562 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:54:18,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-06 21:54:18,565 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:18,565 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:18,566 INFO  L85        PathProgramCache]: Analyzing trace with hash 2050696386, now seen corresponding path program 1 times
[2023-11-06 21:54:18,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:18,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791499395]
[2023-11-06 21:54:18,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:18,567 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:23,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:29,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2023-11-06 21:54:29,227 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:29,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791499395]
[2023-11-06 21:54:29,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791499395] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:29,228 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:29,228 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:54:29,229 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467535882]
[2023-11-06 21:54:29,229 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:29,232 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:54:29,232 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:29,234 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:54:29,235 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:54:29,236 INFO  L87              Difference]: Start difference. First operand 3032 states and 5042 transitions. Second operand  has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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)
[2023-11-06 21:54:29,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:29,442 INFO  L93              Difference]: Finished difference Result 8234 states and 13693 transitions.
[2023-11-06 21:54:29,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:29,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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 2027
[2023-11-06 21:54:29,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:29,458 INFO  L225             Difference]: With dead ends: 8234
[2023-11-06 21:54:29,458 INFO  L226             Difference]: Without dead ends: 5623
[2023-11-06 21:54:29,464 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:29,466 INFO  L413           NwaCegarLoop]: 5015 mSDtfsCounter, 4302 mSDsluCounter, 9469 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4302 SdHoareTripleChecker+Valid, 14484 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:29,466 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4302 Valid, 14484 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:29,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5623 states.
[2023-11-06 21:54:29,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 3034.
[2023-11-06 21:54:29,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3034 states, 3033 states have (on average 1.6630398944939004) internal successors, (5044), 3033 states have internal predecessors, (5044), 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)
[2023-11-06 21:54:29,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5044 transitions.
[2023-11-06 21:54:29,563 INFO  L78                 Accepts]: Start accepts. Automaton has 3034 states and 5044 transitions. Word has length 2027
[2023-11-06 21:54:29,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:29,568 INFO  L495      AbstractCegarLoop]: Abstraction has 3034 states and 5044 transitions.
[2023-11-06 21:54:29,569 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 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)
[2023-11-06 21:54:29,570 INFO  L276                IsEmpty]: Start isEmpty. Operand 3034 states and 5044 transitions.
[2023-11-06 21:54:29,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2029
[2023-11-06 21:54:29,607 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:29,609 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:54:29,609 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-06 21:54:29,610 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:29,610 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:29,611 INFO  L85        PathProgramCache]: Analyzing trace with hash 82641320, now seen corresponding path program 1 times
[2023-11-06 21:54:29,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:29,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413723983]
[2023-11-06 21:54:29,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:29,612 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:32,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:37,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked.
[2023-11-06 21:54:37,414 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:37,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413723983]
[2023-11-06 21:54:37,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413723983] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:37,415 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:37,415 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:54:37,416 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458231289]
[2023-11-06 21:54:37,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:37,418 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:54:37,419 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:37,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:54:37,421 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:37,423 INFO  L87              Difference]: Start difference. First operand 3034 states and 5044 transitions. Second operand  has 5 states, 5 states have (on average 362.2) internal successors, (1811), 5 states have internal predecessors, (1811), 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)
[2023-11-06 21:54:37,614 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:37,614 INFO  L93              Difference]: Finished difference Result 8240 states and 13699 transitions.
[2023-11-06 21:54:37,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:37,616 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 362.2) internal successors, (1811), 5 states have internal predecessors, (1811), 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 2028
[2023-11-06 21:54:37,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:37,631 INFO  L225             Difference]: With dead ends: 8240
[2023-11-06 21:54:37,632 INFO  L226             Difference]: Without dead ends: 5624
[2023-11-06 21:54:37,637 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:54:37,638 INFO  L413           NwaCegarLoop]: 5010 mSDtfsCounter, 4299 mSDsluCounter, 14470 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 19480 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:37,638 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4299 Valid, 19480 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-06 21:54:37,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5624 states.
[2023-11-06 21:54:37,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 3036.
[2023-11-06 21:54:37,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3036 states, 3035 states have (on average 1.6626029654036243) internal successors, (5046), 3035 states have internal predecessors, (5046), 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)
[2023-11-06 21:54:37,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3036 states to 3036 states and 5046 transitions.
[2023-11-06 21:54:37,724 INFO  L78                 Accepts]: Start accepts. Automaton has 3036 states and 5046 transitions. Word has length 2028
[2023-11-06 21:54:37,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:37,727 INFO  L495      AbstractCegarLoop]: Abstraction has 3036 states and 5046 transitions.
[2023-11-06 21:54:37,728 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 362.2) internal successors, (1811), 5 states have internal predecessors, (1811), 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)
[2023-11-06 21:54:37,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 3036 states and 5046 transitions.
[2023-11-06 21:54:37,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2030
[2023-11-06 21:54:37,762 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:37,764 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:54:37,764 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-06 21:54:37,764 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:37,765 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:37,766 INFO  L85        PathProgramCache]: Analyzing trace with hash -1834450074, now seen corresponding path program 1 times
[2023-11-06 21:54:37,766 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:37,766 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316856071]
[2023-11-06 21:54:37,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:37,767 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:40,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:44,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked.
[2023-11-06 21:54:44,692 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:44,692 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316856071]
[2023-11-06 21:54:44,692 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316856071] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:44,692 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:44,693 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:54:44,693 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781604688]
[2023-11-06 21:54:44,693 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:44,696 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:54:44,696 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:44,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:54:44,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:54:44,700 INFO  L87              Difference]: Start difference. First operand 3036 states and 5046 transitions. Second operand  has 4 states, 4 states have (on average 453.5) internal successors, (1814), 4 states have internal predecessors, (1814), 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)
[2023-11-06 21:54:44,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:44,851 INFO  L93              Difference]: Finished difference Result 8246 states and 13705 transitions.
[2023-11-06 21:54:44,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:44,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 453.5) internal successors, (1814), 4 states have internal predecessors, (1814), 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 2029
[2023-11-06 21:54:44,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:44,868 INFO  L225             Difference]: With dead ends: 8246
[2023-11-06 21:54:44,868 INFO  L226             Difference]: Without dead ends: 5625
[2023-11-06 21:54:44,873 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:44,874 INFO  L413           NwaCegarLoop]: 5005 mSDtfsCounter, 4296 mSDsluCounter, 9459 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4296 SdHoareTripleChecker+Valid, 14464 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:44,874 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4296 Valid, 14464 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:44,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5625 states.
[2023-11-06 21:54:44,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5625 to 3038.
[2023-11-06 21:54:44,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3038 states, 3037 states have (on average 1.6621666117879486) internal successors, (5048), 3037 states have internal predecessors, (5048), 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)
[2023-11-06 21:54:44,946 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 5048 transitions.
[2023-11-06 21:54:44,946 INFO  L78                 Accepts]: Start accepts. Automaton has 3038 states and 5048 transitions. Word has length 2029
[2023-11-06 21:54:44,953 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:44,953 INFO  L495      AbstractCegarLoop]: Abstraction has 3038 states and 5048 transitions.
[2023-11-06 21:54:44,954 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 453.5) internal successors, (1814), 4 states have internal predecessors, (1814), 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)
[2023-11-06 21:54:44,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 3038 states and 5048 transitions.
[2023-11-06 21:54:44,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2031
[2023-11-06 21:54:44,989 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:44,991 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:54:44,991 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-06 21:54:44,991 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:44,992 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:44,993 INFO  L85        PathProgramCache]: Analyzing trace with hash -1142181760, now seen corresponding path program 1 times
[2023-11-06 21:54:44,993 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:44,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565616635]
[2023-11-06 21:54:44,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:44,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:47,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:51,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked.
[2023-11-06 21:54:51,807 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:51,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565616635]
[2023-11-06 21:54:51,807 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565616635] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:51,807 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:51,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:54:51,808 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471059960]
[2023-11-06 21:54:51,808 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:51,811 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:54:51,811 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:51,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:54:51,813 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:51,815 INFO  L87              Difference]: Start difference. First operand 3038 states and 5048 transitions. Second operand  has 5 states, 5 states have (on average 363.4) internal successors, (1817), 5 states have internal predecessors, (1817), 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)
[2023-11-06 21:54:51,979 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:51,979 INFO  L93              Difference]: Finished difference Result 8252 states and 13711 transitions.
[2023-11-06 21:54:51,980 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:51,981 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 363.4) internal successors, (1817), 5 states have internal predecessors, (1817), 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 2030
[2023-11-06 21:54:51,986 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:51,998 INFO  L225             Difference]: With dead ends: 8252
[2023-11-06 21:54:51,998 INFO  L226             Difference]: Without dead ends: 5626
[2023-11-06 21:54:52,003 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:54:52,004 INFO  L413           NwaCegarLoop]: 5000 mSDtfsCounter, 4293 mSDsluCounter, 13746 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 18746 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:52,005 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 18746 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:52,056 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5626 states.
[2023-11-06 21:54:52,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 3040.
[2023-11-06 21:54:52,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3040 states, 3039 states have (on average 1.6617308325106943) internal successors, (5050), 3039 states have internal predecessors, (5050), 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)
[2023-11-06 21:54:52,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5050 transitions.
[2023-11-06 21:54:52,120 INFO  L78                 Accepts]: Start accepts. Automaton has 3040 states and 5050 transitions. Word has length 2030
[2023-11-06 21:54:52,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:52,124 INFO  L495      AbstractCegarLoop]: Abstraction has 3040 states and 5050 transitions.
[2023-11-06 21:54:52,125 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 363.4) internal successors, (1817), 5 states have internal predecessors, (1817), 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)
[2023-11-06 21:54:52,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 3040 states and 5050 transitions.
[2023-11-06 21:54:52,159 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2032
[2023-11-06 21:54:52,160 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:52,161 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:54:52,162 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-06 21:54:52,162 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:52,162 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:52,163 INFO  L85        PathProgramCache]: Analyzing trace with hash 580247244, now seen corresponding path program 1 times
[2023-11-06 21:54:52,164 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:52,164 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085598072]
[2023-11-06 21:54:52,164 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:52,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:54:54,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:54:58,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked.
[2023-11-06 21:54:58,935 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:54:58,935 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085598072]
[2023-11-06 21:54:58,936 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085598072] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:54:58,936 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:54:58,936 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:54:58,936 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885025189]
[2023-11-06 21:54:58,937 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:54:58,939 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:54:58,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:54:58,941 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:54:58,942 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:54:58,943 INFO  L87              Difference]: Start difference. First operand 3040 states and 5050 transitions. Second operand  has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 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)
[2023-11-06 21:54:59,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:54:59,148 INFO  L93              Difference]: Finished difference Result 8258 states and 13717 transitions.
[2023-11-06 21:54:59,149 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:54:59,150 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 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 2031
[2023-11-06 21:54:59,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:54:59,205 INFO  L225             Difference]: With dead ends: 8258
[2023-11-06 21:54:59,205 INFO  L226             Difference]: Without dead ends: 5627
[2023-11-06 21:54:59,208 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:54:59,209 INFO  L413           NwaCegarLoop]: 4995 mSDtfsCounter, 4290 mSDsluCounter, 13738 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 18733 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:54:59,209 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 18733 Invalid, 22 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:54:59,215 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5627 states.
[2023-11-06 21:54:59,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 3042.
[2023-11-06 21:54:59,263 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3042 states, 3041 states have (on average 1.6612956264386716) internal successors, (5052), 3041 states have internal predecessors, (5052), 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)
[2023-11-06 21:54:59,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5052 transitions.
[2023-11-06 21:54:59,268 INFO  L78                 Accepts]: Start accepts. Automaton has 3042 states and 5052 transitions. Word has length 2031
[2023-11-06 21:54:59,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:54:59,272 INFO  L495      AbstractCegarLoop]: Abstraction has 3042 states and 5052 transitions.
[2023-11-06 21:54:59,272 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 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)
[2023-11-06 21:54:59,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 3042 states and 5052 transitions.
[2023-11-06 21:54:59,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2033
[2023-11-06 21:54:59,306 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:54:59,308 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-06 21:54:59,308 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-06 21:54:59,308 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:54:59,309 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:54:59,310 INFO  L85        PathProgramCache]: Analyzing trace with hash 2080376858, now seen corresponding path program 1 times
[2023-11-06 21:54:59,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:54:59,310 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719213029]
[2023-11-06 21:54:59,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:54:59,311 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:01,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:55:05,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked.
[2023-11-06 21:55:05,448 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:55:05,448 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719213029]
[2023-11-06 21:55:05,448 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719213029] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:55:05,448 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:55:05,448 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:55:05,449 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249715274]
[2023-11-06 21:55:05,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:55:05,451 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:55:05,451 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:55:05,454 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:55:05,454 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:55:05,455 INFO  L87              Difference]: Start difference. First operand 3042 states and 5052 transitions. Second operand  has 4 states, 4 states have (on average 455.75) internal successors, (1823), 4 states have internal predecessors, (1823), 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)
[2023-11-06 21:55:05,589 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:55:05,589 INFO  L93              Difference]: Finished difference Result 8264 states and 13723 transitions.
[2023-11-06 21:55:05,590 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:55:05,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 455.75) internal successors, (1823), 4 states have internal predecessors, (1823), 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 2032
[2023-11-06 21:55:05,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:55:05,605 INFO  L225             Difference]: With dead ends: 8264
[2023-11-06 21:55:05,605 INFO  L226             Difference]: Without dead ends: 5628
[2023-11-06 21:55:05,610 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:55:05,610 INFO  L413           NwaCegarLoop]: 4990 mSDtfsCounter, 4287 mSDsluCounter, 9444 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 14434 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:55:05,611 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4287 Valid, 14434 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:55:05,617 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5628 states.
[2023-11-06 21:55:05,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 3044.
[2023-11-06 21:55:05,666 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3044 states, 3043 states have (on average 1.6608609924416695) internal successors, (5054), 3043 states have internal predecessors, (5054), 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)
[2023-11-06 21:55:05,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5054 transitions.
[2023-11-06 21:55:05,671 INFO  L78                 Accepts]: Start accepts. Automaton has 3044 states and 5054 transitions. Word has length 2032
[2023-11-06 21:55:05,675 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:55:05,675 INFO  L495      AbstractCegarLoop]: Abstraction has 3044 states and 5054 transitions.
[2023-11-06 21:55:05,676 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 455.75) internal successors, (1823), 4 states have internal predecessors, (1823), 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)
[2023-11-06 21:55:05,676 INFO  L276                IsEmpty]: Start isEmpty. Operand 3044 states and 5054 transitions.
[2023-11-06 21:55:05,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2034
[2023-11-06 21:55:05,709 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:55:05,711 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:55:05,711 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-06 21:55:05,712 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:55:05,712 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:55:05,713 INFO  L85        PathProgramCache]: Analyzing trace with hash -2061167504, now seen corresponding path program 1 times
[2023-11-06 21:55:05,713 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:55:05,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619763263]
[2023-11-06 21:55:05,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:55:05,714 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:07,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:55:11,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2023-11-06 21:55:11,482 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:55:11,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619763263]
[2023-11-06 21:55:11,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619763263] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:55:11,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:55:11,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:55:11,483 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170416919]
[2023-11-06 21:55:11,483 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:55:11,485 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:55:11,485 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:55:11,487 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:55:11,487 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:55:11,488 INFO  L87              Difference]: Start difference. First operand 3044 states and 5054 transitions. Second operand  has 4 states, 4 states have (on average 456.5) internal successors, (1826), 4 states have internal predecessors, (1826), 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)
[2023-11-06 21:55:11,627 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:55:11,627 INFO  L93              Difference]: Finished difference Result 8270 states and 13729 transitions.
[2023-11-06 21:55:11,628 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:55:11,628 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 456.5) internal successors, (1826), 4 states have internal predecessors, (1826), 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 2033
[2023-11-06 21:55:11,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:55:11,641 INFO  L225             Difference]: With dead ends: 8270
[2023-11-06 21:55:11,641 INFO  L226             Difference]: Without dead ends: 5629
[2023-11-06 21:55:11,645 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:55:11,646 INFO  L413           NwaCegarLoop]: 4985 mSDtfsCounter, 4284 mSDsluCounter, 9439 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 14424 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:55:11,647 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 14424 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:55:11,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5629 states.
[2023-11-06 21:55:11,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 3046.
[2023-11-06 21:55:11,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3046 states, 3045 states have (on average 1.6604269293924467) internal successors, (5056), 3045 states have internal predecessors, (5056), 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)
[2023-11-06 21:55:11,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 5056 transitions.
[2023-11-06 21:55:11,707 INFO  L78                 Accepts]: Start accepts. Automaton has 3046 states and 5056 transitions. Word has length 2033
[2023-11-06 21:55:11,709 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:55:11,709 INFO  L495      AbstractCegarLoop]: Abstraction has 3046 states and 5056 transitions.
[2023-11-06 21:55:11,710 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 456.5) internal successors, (1826), 4 states have internal predecessors, (1826), 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)
[2023-11-06 21:55:11,710 INFO  L276                IsEmpty]: Start isEmpty. Operand 3046 states and 5056 transitions.
[2023-11-06 21:55:11,743 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2035
[2023-11-06 21:55:11,744 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:55:11,745 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:55:11,746 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-06 21:55:11,746 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:55:11,747 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:55:11,748 INFO  L85        PathProgramCache]: Analyzing trace with hash -8509966, now seen corresponding path program 1 times
[2023-11-06 21:55:11,748 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:55:11,748 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001358138]
[2023-11-06 21:55:11,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:55:11,749 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:14,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:55:18,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked.
[2023-11-06 21:55:18,745 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:55:18,745 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001358138]
[2023-11-06 21:55:18,745 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001358138] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:55:18,745 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:55:18,745 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:55:18,746 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728993005]
[2023-11-06 21:55:18,746 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:55:18,749 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:55:18,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:55:18,751 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:55:18,751 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:55:18,752 INFO  L87              Difference]: Start difference. First operand 3046 states and 5056 transitions. Second operand  has 5 states, 5 states have (on average 365.8) internal successors, (1829), 5 states have internal predecessors, (1829), 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)
[2023-11-06 21:55:18,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:55:18,931 INFO  L93              Difference]: Finished difference Result 8276 states and 13735 transitions.
[2023-11-06 21:55:18,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:55:18,933 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 365.8) internal successors, (1829), 5 states have internal predecessors, (1829), 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 2034
[2023-11-06 21:55:18,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:55:18,945 INFO  L225             Difference]: With dead ends: 8276
[2023-11-06 21:55:18,946 INFO  L226             Difference]: Without dead ends: 5630
[2023-11-06 21:55:18,950 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:55:18,951 INFO  L413           NwaCegarLoop]: 4980 mSDtfsCounter, 4281 mSDsluCounter, 14410 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4281 SdHoareTripleChecker+Valid, 19390 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:55:18,951 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4281 Valid, 19390 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:55:18,958 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5630 states.
[2023-11-06 21:55:19,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 3048.
[2023-11-06 21:55:19,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3048 states, 3047 states have (on average 1.6599934361667215) internal successors, (5058), 3047 states have internal predecessors, (5058), 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)
[2023-11-06 21:55:19,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5058 transitions.
[2023-11-06 21:55:19,064 INFO  L78                 Accepts]: Start accepts. Automaton has 3048 states and 5058 transitions. Word has length 2034
[2023-11-06 21:55:19,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:55:19,066 INFO  L495      AbstractCegarLoop]: Abstraction has 3048 states and 5058 transitions.
[2023-11-06 21:55:19,067 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 365.8) internal successors, (1829), 5 states have internal predecessors, (1829), 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)
[2023-11-06 21:55:19,067 INFO  L276                IsEmpty]: Start isEmpty. Operand 3048 states and 5058 transitions.
[2023-11-06 21:55:19,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2036
[2023-11-06 21:55:19,100 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:55:19,102 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:55:19,102 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-11-06 21:55:19,102 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:55:19,102 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:55:19,103 INFO  L85        PathProgramCache]: Analyzing trace with hash -1183976490, now seen corresponding path program 1 times
[2023-11-06 21:55:19,104 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:55:19,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987834309]
[2023-11-06 21:55:19,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:55:19,105 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:21,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:55:24,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2023-11-06 21:55:24,919 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:55:24,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987834309]
[2023-11-06 21:55:24,919 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987834309] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:55:24,919 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:55:24,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 21:55:24,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515612901]
[2023-11-06 21:55:24,920 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:55:24,922 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 21:55:24,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:55:24,925 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 21:55:24,925 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 21:55:24,926 INFO  L87              Difference]: Start difference. First operand 3048 states and 5058 transitions. Second operand  has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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)
[2023-11-06 21:55:25,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:55:25,066 INFO  L93              Difference]: Finished difference Result 8282 states and 13741 transitions.
[2023-11-06 21:55:25,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:55:25,067 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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 2035
[2023-11-06 21:55:25,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:55:25,079 INFO  L225             Difference]: With dead ends: 8282
[2023-11-06 21:55:25,079 INFO  L226             Difference]: Without dead ends: 5631
[2023-11-06 21:55:25,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:55:25,084 INFO  L413           NwaCegarLoop]: 4975 mSDtfsCounter, 4278 mSDsluCounter, 9429 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 14404 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:55:25,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4278 Valid, 14404 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:55:25,090 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5631 states.
[2023-11-06 21:55:25,132 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3050.
[2023-11-06 21:55:25,136 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3050 states, 3049 states have (on average 1.6595605116431618) internal successors, (5060), 3049 states have internal predecessors, (5060), 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)
[2023-11-06 21:55:25,140 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 5060 transitions.
[2023-11-06 21:55:25,141 INFO  L78                 Accepts]: Start accepts. Automaton has 3050 states and 5060 transitions. Word has length 2035
[2023-11-06 21:55:25,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:55:25,143 INFO  L495      AbstractCegarLoop]: Abstraction has 3050 states and 5060 transitions.
[2023-11-06 21:55:25,143 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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)
[2023-11-06 21:55:25,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 3050 states and 5060 transitions.
[2023-11-06 21:55:25,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2037
[2023-11-06 21:55:25,178 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:55:25,179 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:55:25,180 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-06 21:55:25,180 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:55:25,181 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:55:25,182 INFO  L85        PathProgramCache]: Analyzing trace with hash 1244666252, now seen corresponding path program 1 times
[2023-11-06 21:55:25,182 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:55:25,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114375016]
[2023-11-06 21:55:25,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:55:25,183 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:27,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 21:55:31,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 232 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2023-11-06 21:55:31,558 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 21:55:31,559 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114375016]
[2023-11-06 21:55:31,559 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114375016] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 21:55:31,559 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 21:55:31,559 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 21:55:31,560 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475322842]
[2023-11-06 21:55:31,560 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 21:55:31,562 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 21:55:31,562 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 21:55:31,564 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 21:55:31,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 21:55:31,565 INFO  L87              Difference]: Start difference. First operand 3050 states and 5060 transitions. Second operand  has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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)
[2023-11-06 21:55:31,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 21:55:31,701 INFO  L93              Difference]: Finished difference Result 8288 states and 13747 transitions.
[2023-11-06 21:55:31,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 21:55:31,702 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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 2036
[2023-11-06 21:55:31,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 21:55:31,726 INFO  L225             Difference]: With dead ends: 8288
[2023-11-06 21:55:31,726 INFO  L226             Difference]: Without dead ends: 5632
[2023-11-06 21:55:31,731 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-06 21:55:31,732 INFO  L413           NwaCegarLoop]: 4970 mSDtfsCounter, 4275 mSDsluCounter, 14390 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 19360 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 21:55:31,732 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 19360 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 21:55:31,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5632 states.
[2023-11-06 21:55:31,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 3052.
[2023-11-06 21:55:31,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3052 states, 3051 states have (on average 1.659128154703376) internal successors, (5062), 3051 states have internal predecessors, (5062), 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)
[2023-11-06 21:55:31,789 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5062 transitions.
[2023-11-06 21:55:31,790 INFO  L78                 Accepts]: Start accepts. Automaton has 3052 states and 5062 transitions. Word has length 2036
[2023-11-06 21:55:31,791 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 21:55:31,792 INFO  L495      AbstractCegarLoop]: Abstraction has 3052 states and 5062 transitions.
[2023-11-06 21:55:31,792 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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)
[2023-11-06 21:55:31,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 3052 states and 5062 transitions.
[2023-11-06 21:55:31,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2038
[2023-11-06 21:55:31,826 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 21:55:31,828 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-11-06 21:55:31,828 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-11-06 21:55:31,828 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 21:55:31,829 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 21:55:31,830 INFO  L85        PathProgramCache]: Analyzing trace with hash 1979056250, now seen corresponding path program 1 times
[2023-11-06 21:55:31,830 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 21:55:31,830 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909355515]
[2023-11-06 21:55:31,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 21:55:31,831 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 21:55:34,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat