./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version e7bb482b
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/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_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/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_c50921b5-391d-4848-82a5-a014dc71fa1b/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 6aeb07c44bf14581bb0b319f795057f1cb31dbe6f17e4b3d36e674cf9d0ecd3c
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-e7bb482
[2023-11-06 22:37:06,950 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-06 22:37:07,065 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-06 22:37:07,074 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-06 22:37:07,075 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-06 22:37:07,117 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-06 22:37:07,118 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-06 22:37:07,119 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-06 22:37:07,119 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-06 22:37:07,120 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-06 22:37:07,121 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-06 22:37:07,122 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-06 22:37:07,122 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-06 22:37:07,123 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-06 22:37:07,123 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-06 22:37:07,124 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-06 22:37:07,125 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-06 22:37:07,125 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-06 22:37:07,126 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-06 22:37:07,126 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-06 22:37:07,127 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-06 22:37:07,127 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-06 22:37:07,128 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-06 22:37:07,128 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-06 22:37:07,129 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-06 22:37:07,129 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:37:07,130 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-06 22:37:07,130 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-06 22:37:07,131 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-11-06 22:37:07,131 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-06 22:37:07,132 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-06 22:37:07,132 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-06 22:37:07,132 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-06 22:37:07,133 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-06 22:37:07,133 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-06 22:37:07,133 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-06 22:37:07,134 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_c50921b5-391d-4848-82a5-a014dc71fa1b/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_c50921b5-391d-4848-82a5-a014dc71fa1b/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 -> 6aeb07c44bf14581bb0b319f795057f1cb31dbe6f17e4b3d36e674cf9d0ecd3c
[2023-11-06 22:37:07,442 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-06 22:37:07,473 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-06 22:37:07,476 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-06 22:37:07,477 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-06 22:37:07,478 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-06 22:37:07,479 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c
[2023-11-06 22:37:10,517 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-06 22:37:11,079 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-06 22:37:11,081 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c
[2023-11-06 22:37:11,110 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/data/696077b32/81164934c2dc4c5d8f7263d2692f130d/FLAGbbee5b9b8
[2023-11-06 22:37:11,127 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/data/696077b32/81164934c2dc4c5d8f7263d2692f130d
[2023-11-06 22:37:11,133 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-06 22:37:11,136 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-06 22:37:11,141 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-06 22:37:11,143 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-06 22:37:11,148 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-06 22:37:11,149 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:11" (1/1) ...
[2023-11-06 22:37:11,150 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5574b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:11, skipping insertion in model container
[2023-11-06 22:37:11,150 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:11" (1/1) ...
[2023-11-06 22:37:11,317 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-06 22:37:11,614 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_c50921b5-391d-4848-82a5-a014dc71fa1b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c[1245,1258]
[2023-11-06 22:37:12,353 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:37:12,363 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-06 22:37:12,375 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_c50921b5-391d-4848-82a5-a014dc71fa1b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal40.c[1245,1258]
[2023-11-06 22:37:12,822 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-06 22:37:12,837 INFO  L206         MainTranslator]: Completed translation
[2023-11-06 22:37:12,838 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12 WrapperNode
[2023-11-06 22:37:12,838 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-06 22:37:12,840 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-06 22:37:12,840 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-06 22:37:12,840 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-06 22:37:12,848 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:12,988 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:14,988 INFO  L138                Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 14972
[2023-11-06 22:37:14,989 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-06 22:37:14,990 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-06 22:37:14,990 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-06 22:37:14,990 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-06 22:37:15,002 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:15,002 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:15,615 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:15,615 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:16,387 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:16,507 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:16,613 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:16,668 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:17,078 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-06 22:37:17,080 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-06 22:37:17,080 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-06 22:37:17,080 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-06 22:37:17,081 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (1/1) ...
[2023-11-06 22:37:17,104 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-06 22:37:17,117 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/z3
[2023-11-06 22:37:17,165 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-06 22:37:17,239 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c50921b5-391d-4848-82a5-a014dc71fa1b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-06 22:37:17,306 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-06 22:37:17,307 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-06 22:37:17,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-06 22:37:17,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-06 22:37:18,357 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-06 22:37:18,360 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-06 22:37:29,832 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-06 22:37:29,869 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-06 22:37:29,869 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-06 22:37:29,876 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:29 BoogieIcfgContainer
[2023-11-06 22:37:29,877 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-06 22:37:29,880 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-06 22:37:29,880 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-06 22:37:29,884 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-06 22:37:29,884 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:37:11" (1/3) ...
[2023-11-06 22:37:29,886 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b46e6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:29, skipping insertion in model container
[2023-11-06 22:37:29,886 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:12" (2/3) ...
[2023-11-06 22:37:29,887 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b46e6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:29, skipping insertion in model container
[2023-11-06 22:37:29,889 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:29" (3/3) ...
[2023-11-06 22:37:29,890 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal40.c
[2023-11-06 22:37:29,913 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-06 22:37:29,913 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-06 22:37:30,067 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-06 22:37:30,074 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;@3379273a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-06 22:37:30,075 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-06 22:37:30,094 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 3235 states, 3233 states have (on average 1.666254253015775) internal successors, (5387), 3234 states have internal predecessors, (5387), 0 states have call successors, (0), 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 22:37:30,315 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1966
[2023-11-06 22:37:30,316 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:37:30,318 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:30,319 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:37:30,325 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:37:30,327 INFO  L85        PathProgramCache]: Analyzing trace with hash 1895474935, now seen corresponding path program 1 times
[2023-11-06 22:37:30,338 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:37:30,338 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61292989]
[2023-11-06 22:37:30,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:37:30,340 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:37:32,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:37:47,708 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 22:37:47,708 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:37:47,709 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61292989]
[2023-11-06 22:37:47,709 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61292989] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:37:47,710 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:37:47,710 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:37:47,711 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331251230]
[2023-11-06 22:37:47,712 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:37:47,721 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:37:47,722 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:37:47,761 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:37:47,763 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:37:47,774 INFO  L87              Difference]: Start difference. First operand  has 3235 states, 3233 states have (on average 1.666254253015775) internal successors, (5387), 3234 states have internal predecessors, (5387), 0 states have call successors, (0), 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 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 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 22:37:48,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:37:48,096 INFO  L93              Difference]: Finished difference Result 6394 states and 10652 transitions.
[2023-11-06 22:37:48,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:37:48,101 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 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 1965
[2023-11-06 22:37:48,113 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:37:48,160 INFO  L225             Difference]: With dead ends: 6394
[2023-11-06 22:37:48,160 INFO  L226             Difference]: Without dead ends: 3233
[2023-11-06 22:37:48,178 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 22:37:48,183 INFO  L413           NwaCegarLoop]: 5379 mSDtfsCounter, 1 mSDsluCounter, 10752 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16131 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 22:37:48,185 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16131 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:37:48,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3233 states.
[2023-11-06 22:37:48,366 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3233.
[2023-11-06 22:37:48,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3233 states, 3232 states have (on average 1.6655321782178218) internal successors, (5383), 3232 states have internal predecessors, (5383), 0 states have call successors, (0), 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 22:37:48,397 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5383 transitions.
[2023-11-06 22:37:48,398 INFO  L78                 Accepts]: Start accepts. Automaton has 3233 states and 5383 transitions. Word has length 1965
[2023-11-06 22:37:48,403 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:37:48,404 INFO  L495      AbstractCegarLoop]: Abstraction has 3233 states and 5383 transitions.
[2023-11-06 22:37:48,406 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 491.25) internal successors, (1965), 4 states have internal predecessors, (1965), 0 states have call successors, (0), 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 22:37:48,406 INFO  L276                IsEmpty]: Start isEmpty. Operand 3233 states and 5383 transitions.
[2023-11-06 22:37:48,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1967
[2023-11-06 22:37:48,577 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:37:48,578 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:48,579 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-06 22:37:48,579 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:37:48,580 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:37:48,582 INFO  L85        PathProgramCache]: Analyzing trace with hash -1368082441, now seen corresponding path program 1 times
[2023-11-06 22:37:48,582 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:37:48,582 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425005822]
[2023-11-06 22:37:48,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:37:48,584 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:37:50,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:37:57,534 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 22:37:57,534 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:37:57,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425005822]
[2023-11-06 22:37:57,535 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425005822] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:37:57,535 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:37:57,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:37:57,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425397778]
[2023-11-06 22:37:57,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:37:57,541 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:37:57,542 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:37:57,545 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:37:57,546 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:37:57,547 INFO  L87              Difference]: Start difference. First operand 3233 states and 5383 transitions. Second operand  has 5 states, 5 states have (on average 393.2) internal successors, (1966), 5 states have internal predecessors, (1966), 0 states have call successors, (0), 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 22:37:58,757 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:37:58,757 INFO  L93              Difference]: Finished difference Result 9497 states and 15801 transitions.
[2023-11-06 22:37:58,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:37:58,759 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 393.2) internal successors, (1966), 5 states have internal predecessors, (1966), 0 states have call successors, (0), 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 1966
[2023-11-06 22:37:58,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:37:58,779 INFO  L225             Difference]: With dead ends: 9497
[2023-11-06 22:37:58,780 INFO  L226             Difference]: Without dead ends: 3233
[2023-11-06 22:37:58,786 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-11-06 22:37:58,787 INFO  L413           NwaCegarLoop]: 9526 mSDtfsCounter, 9416 mSDsluCounter, 14678 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9416 SdHoareTripleChecker+Valid, 24204 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-11-06 22:37:58,788 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9416 Valid, 24204 Invalid, 427 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-11-06 22:37:58,795 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3233 states.
[2023-11-06 22:37:58,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3233.
[2023-11-06 22:37:58,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3233 states, 3232 states have (on average 1.6652227722772277) internal successors, (5382), 3232 states have internal predecessors, (5382), 0 states have call successors, (0), 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 22:37:58,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5382 transitions.
[2023-11-06 22:37:58,869 INFO  L78                 Accepts]: Start accepts. Automaton has 3233 states and 5382 transitions. Word has length 1966
[2023-11-06 22:37:58,872 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:37:58,872 INFO  L495      AbstractCegarLoop]: Abstraction has 3233 states and 5382 transitions.
[2023-11-06 22:37:58,874 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 393.2) internal successors, (1966), 5 states have internal predecessors, (1966), 0 states have call successors, (0), 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 22:37:58,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 3233 states and 5382 transitions.
[2023-11-06 22:37:58,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1968
[2023-11-06 22:37:58,909 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:37:58,911 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-06 22:37:58,911 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-06 22:37:58,912 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:37:58,912 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:37:58,913 INFO  L85        PathProgramCache]: Analyzing trace with hash -1526612742, now seen corresponding path program 1 times
[2023-11-06 22:37:58,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:37:58,914 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074390386]
[2023-11-06 22:37:58,915 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:37:58,915 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:00,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:04,844 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 22:38:04,845 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:04,845 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074390386]
[2023-11-06 22:38:04,845 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074390386] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:04,846 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:04,846 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:38:04,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29280198]
[2023-11-06 22:38:04,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:04,849 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:38:04,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:04,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:38:04,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:38:04,855 INFO  L87              Difference]: Start difference. First operand 3233 states and 5382 transitions. Second operand  has 5 states, 5 states have (on average 393.4) internal successors, (1967), 5 states have internal predecessors, (1967), 0 states have call successors, (0), 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 22:38:05,671 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:05,672 INFO  L93              Difference]: Finished difference Result 6392 states and 10642 transitions.
[2023-11-06 22:38:05,673 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:38:05,674 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 393.4) internal successors, (1967), 5 states have internal predecessors, (1967), 0 states have call successors, (0), 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 1967
[2023-11-06 22:38:05,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:05,698 INFO  L225             Difference]: With dead ends: 6392
[2023-11-06 22:38:05,698 INFO  L226             Difference]: Without dead ends: 3233
[2023-11-06 22:38:05,706 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-06 22:38:05,710 INFO  L413           NwaCegarLoop]: 5154 mSDtfsCounter, 8964 mSDsluCounter, 5153 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8964 SdHoareTripleChecker+Valid, 10307 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:05,711 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8964 Valid, 10307 Invalid, 449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-11-06 22:38:05,720 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3233 states.
[2023-11-06 22:38:05,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3233.
[2023-11-06 22:38:05,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3233 states, 3232 states have (on average 1.6649133663366336) internal successors, (5381), 3232 states have internal predecessors, (5381), 0 states have call successors, (0), 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 22:38:05,809 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5381 transitions.
[2023-11-06 22:38:05,809 INFO  L78                 Accepts]: Start accepts. Automaton has 3233 states and 5381 transitions. Word has length 1967
[2023-11-06 22:38:05,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:05,813 INFO  L495      AbstractCegarLoop]: Abstraction has 3233 states and 5381 transitions.
[2023-11-06 22:38:05,814 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 393.4) internal successors, (1967), 5 states have internal predecessors, (1967), 0 states have call successors, (0), 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 22:38:05,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 3233 states and 5381 transitions.
[2023-11-06 22:38:05,879 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1969
[2023-11-06 22:38:05,879 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:05,881 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:05,882 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-06 22:38:05,883 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:05,883 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:05,884 INFO  L85        PathProgramCache]: Analyzing trace with hash 217184938, now seen corresponding path program 1 times
[2023-11-06 22:38:05,885 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:05,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985502750]
[2023-11-06 22:38:05,886 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:05,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:07,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:11,880 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 22:38:11,881 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:11,881 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985502750]
[2023-11-06 22:38:11,881 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985502750] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:11,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:11,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:38:11,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736357595]
[2023-11-06 22:38:11,883 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:11,885 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:38:11,886 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:11,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:38:11,890 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:38:11,901 INFO  L87              Difference]: Start difference. First operand 3233 states and 5381 transitions. Second operand  has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 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 22:38:12,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:12,066 INFO  L93              Difference]: Finished difference Result 6395 states and 10644 transitions.
[2023-11-06 22:38:12,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:38:12,069 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 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 1968
[2023-11-06 22:38:12,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:12,090 INFO  L225             Difference]: With dead ends: 6395
[2023-11-06 22:38:12,090 INFO  L226             Difference]: Without dead ends: 3236
[2023-11-06 22:38:12,095 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 22:38:12,104 INFO  L413           NwaCegarLoop]: 5377 mSDtfsCounter, 1 mSDsluCounter, 10745 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16122 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:12,106 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16122 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:38:12,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3236 states.
[2023-11-06 22:38:12,214 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3235.
[2023-11-06 22:38:12,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3235 states, 3234 states have (on average 1.6645021645021645) internal successors, (5383), 3234 states have internal predecessors, (5383), 0 states have call successors, (0), 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 22:38:12,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 5383 transitions.
[2023-11-06 22:38:12,235 INFO  L78                 Accepts]: Start accepts. Automaton has 3235 states and 5383 transitions. Word has length 1968
[2023-11-06 22:38:12,238 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:12,238 INFO  L495      AbstractCegarLoop]: Abstraction has 3235 states and 5383 transitions.
[2023-11-06 22:38:12,239 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 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 22:38:12,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 3235 states and 5383 transitions.
[2023-11-06 22:38:12,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1970
[2023-11-06 22:38:12,302 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:12,305 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:12,305 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-06 22:38:12,305 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:12,306 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:12,307 INFO  L85        PathProgramCache]: Analyzing trace with hash -2067622210, now seen corresponding path program 1 times
[2023-11-06 22:38:12,307 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:12,307 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300507671]
[2023-11-06 22:38:12,308 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:12,308 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:23,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:29,377 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 22:38:29,377 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:29,377 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300507671]
[2023-11-06 22:38:29,378 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300507671] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:29,378 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:29,378 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:38:29,378 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135248833]
[2023-11-06 22:38:29,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:29,381 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:38:29,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:29,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:38:29,385 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:38:29,386 INFO  L87              Difference]: Start difference. First operand 3235 states and 5383 transitions. Second operand  has 4 states, 4 states have (on average 492.25) internal successors, (1969), 4 states have internal predecessors, (1969), 0 states have call successors, (0), 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 22:38:30,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:30,033 INFO  L93              Difference]: Finished difference Result 8933 states and 14862 transitions.
[2023-11-06 22:38:30,034 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 22:38:30,034 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 492.25) internal successors, (1969), 4 states have internal predecessors, (1969), 0 states have call successors, (0), 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 1969
[2023-11-06 22:38:30,043 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:30,062 INFO  L225             Difference]: With dead ends: 8933
[2023-11-06 22:38:30,062 INFO  L226             Difference]: Without dead ends: 3235
[2023-11-06 22:38:30,068 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:38:30,069 INFO  L413           NwaCegarLoop]: 5345 mSDtfsCounter, 2482 mSDsluCounter, 10510 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 15855 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:30,070 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 15855 Invalid, 306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-06 22:38:30,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3235 states.
[2023-11-06 22:38:30,132 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3235.
[2023-11-06 22:38:30,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3235 states, 3234 states have (on average 1.6641929499072357) internal successors, (5382), 3234 states have internal predecessors, (5382), 0 states have call successors, (0), 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 22:38:30,146 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 5382 transitions.
[2023-11-06 22:38:30,146 INFO  L78                 Accepts]: Start accepts. Automaton has 3235 states and 5382 transitions. Word has length 1969
[2023-11-06 22:38:30,147 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:30,147 INFO  L495      AbstractCegarLoop]: Abstraction has 3235 states and 5382 transitions.
[2023-11-06 22:38:30,148 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 492.25) internal successors, (1969), 4 states have internal predecessors, (1969), 0 states have call successors, (0), 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 22:38:30,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 3235 states and 5382 transitions.
[2023-11-06 22:38:30,183 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1971
[2023-11-06 22:38:30,183 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:30,185 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:30,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-06 22:38:30,185 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:30,186 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:30,187 INFO  L85        PathProgramCache]: Analyzing trace with hash 1265076530, now seen corresponding path program 1 times
[2023-11-06 22:38:30,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:30,187 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456670882]
[2023-11-06 22:38:30,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:30,188 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:37,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:41,878 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 22:38:41,879 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:41,879 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456670882]
[2023-11-06 22:38:41,879 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456670882] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:41,879 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:41,880 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-06 22:38:41,880 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618346424]
[2023-11-06 22:38:41,880 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:41,883 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-06 22:38:41,883 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:41,885 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-06 22:38:41,886 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-06 22:38:41,887 INFO  L87              Difference]: Start difference. First operand 3235 states and 5382 transitions. Second operand  has 4 states, 4 states have (on average 492.5) internal successors, (1970), 4 states have internal predecessors, (1970), 0 states have call successors, (0), 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 22:38:42,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:42,009 INFO  L93              Difference]: Finished difference Result 6433 states and 10702 transitions.
[2023-11-06 22:38:42,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-06 22:38:42,011 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 492.5) internal successors, (1970), 4 states have internal predecessors, (1970), 0 states have call successors, (0), 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 1970
[2023-11-06 22:38:42,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:42,028 INFO  L225             Difference]: With dead ends: 6433
[2023-11-06 22:38:42,029 INFO  L226             Difference]: Without dead ends: 3272
[2023-11-06 22:38:42,033 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 22:38:42,034 INFO  L413           NwaCegarLoop]: 5432 mSDtfsCounter, 10502 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10502 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:42,034 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10502 Valid, 5778 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-06 22:38:42,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3272 states.
[2023-11-06 22:38:42,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3235.
[2023-11-06 22:38:42,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3235 states, 3234 states have (on average 1.6638837353123068) internal successors, (5381), 3234 states have internal predecessors, (5381), 0 states have call successors, (0), 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 22:38:42,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 5381 transitions.
[2023-11-06 22:38:42,124 INFO  L78                 Accepts]: Start accepts. Automaton has 3235 states and 5381 transitions. Word has length 1970
[2023-11-06 22:38:42,126 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:42,126 INFO  L495      AbstractCegarLoop]: Abstraction has 3235 states and 5381 transitions.
[2023-11-06 22:38:42,127 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 492.5) internal successors, (1970), 4 states have internal predecessors, (1970), 0 states have call successors, (0), 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 22:38:42,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 3235 states and 5381 transitions.
[2023-11-06 22:38:42,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1972
[2023-11-06 22:38:42,161 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:42,163 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:42,163 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-06 22:38:42,169 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:42,170 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:42,171 INFO  L85        PathProgramCache]: Analyzing trace with hash -689260146, now seen corresponding path program 1 times
[2023-11-06 22:38:42,171 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:42,171 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105642565]
[2023-11-06 22:38:42,172 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:42,172 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:38:54,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:38:58,345 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 22:38:58,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:38:58,346 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105642565]
[2023-11-06 22:38:58,346 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105642565] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:38:58,346 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:38:58,346 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 22:38:58,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572239940]
[2023-11-06 22:38:58,347 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:38:58,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 22:38:58,349 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:38:58,364 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 22:38:58,365 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 22:38:58,366 INFO  L87              Difference]: Start difference. First operand 3235 states and 5381 transitions. Second operand  has 6 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 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 22:38:59,435 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:38:59,436 INFO  L93              Difference]: Finished difference Result 9560 states and 15902 transitions.
[2023-11-06 22:38:59,436 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-06 22:38:59,437 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 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 1971
[2023-11-06 22:38:59,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:38:59,470 INFO  L225             Difference]: With dead ends: 9560
[2023-11-06 22:38:59,470 INFO  L226             Difference]: Without dead ends: 6399
[2023-11-06 22:38:59,475 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-06 22:38:59,476 INFO  L413           NwaCegarLoop]: 5203 mSDtfsCounter, 10450 mSDsluCounter, 15737 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10450 SdHoareTripleChecker+Valid, 20940 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-11-06 22:38:59,476 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10450 Valid, 20940 Invalid, 661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-11-06 22:38:59,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6399 states.
[2023-11-06 22:38:59,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 3267.
[2023-11-06 22:38:59,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3267 states, 3266 states have (on average 1.662890385793019) internal successors, (5431), 3266 states have internal predecessors, (5431), 0 states have call successors, (0), 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 22:38:59,582 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 5431 transitions.
[2023-11-06 22:38:59,582 INFO  L78                 Accepts]: Start accepts. Automaton has 3267 states and 5431 transitions. Word has length 1971
[2023-11-06 22:38:59,583 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:38:59,583 INFO  L495      AbstractCegarLoop]: Abstraction has 3267 states and 5431 transitions.
[2023-11-06 22:38:59,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 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 22:38:59,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 3267 states and 5431 transitions.
[2023-11-06 22:38:59,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1973
[2023-11-06 22:38:59,620 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:38:59,622 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:59,622 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-06 22:38:59,622 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:38:59,623 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:38:59,624 INFO  L85        PathProgramCache]: Analyzing trace with hash -1715994138, now seen corresponding path program 1 times
[2023-11-06 22:38:59,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:38:59,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190111537]
[2023-11-06 22:38:59,625 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:38:59,625 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:39:01,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:39:05,522 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 22:39:05,522 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:39:05,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190111537]
[2023-11-06 22:39:05,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190111537] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:39:05,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:39:05,523 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-11-06 22:39:05,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142620897]
[2023-11-06 22:39:05,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:39:05,526 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-06 22:39:05,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:39:05,529 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-06 22:39:05,530 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-11-06 22:39:05,531 INFO  L87              Difference]: Start difference. First operand 3267 states and 5431 transitions. Second operand  has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 0 states have call successors, (0), 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 22:39:05,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:39:05,975 INFO  L93              Difference]: Finished difference Result 13107 states and 21805 transitions.
[2023-11-06 22:39:05,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-06 22:39:05,977 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 0 states have call successors, (0), 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 1972
[2023-11-06 22:39:05,980 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:39:05,999 INFO  L225             Difference]: With dead ends: 13107
[2023-11-06 22:39:06,000 INFO  L226             Difference]: Without dead ends: 9914
[2023-11-06 22:39:06,007 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:39:06,008 INFO  L413           NwaCegarLoop]: 10589 mSDtfsCounter, 16334 mSDsluCounter, 24161 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16334 SdHoareTripleChecker+Valid, 34750 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-11-06 22:39:06,008 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16334 Valid, 34750 Invalid, 141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-11-06 22:39:06,023 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9914 states.
[2023-11-06 22:39:06,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 4994.
[2023-11-06 22:39:06,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4994 states, 4993 states have (on average 1.664129781694372) internal successors, (8309), 4993 states have internal predecessors, (8309), 0 states have call successors, (0), 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 22:39:06,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 8309 transitions.
[2023-11-06 22:39:06,190 INFO  L78                 Accepts]: Start accepts. Automaton has 4994 states and 8309 transitions. Word has length 1972
[2023-11-06 22:39:06,192 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:39:06,193 INFO  L495      AbstractCegarLoop]: Abstraction has 4994 states and 8309 transitions.
[2023-11-06 22:39:06,193 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 0 states have call successors, (0), 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 22:39:06,194 INFO  L276                IsEmpty]: Start isEmpty. Operand 4994 states and 8309 transitions.
[2023-11-06 22:39:06,239 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1973
[2023-11-06 22:39:06,240 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:39:06,241 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, 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]
[2023-11-06 22:39:06,242 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-06 22:39:06,242 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:39:06,242 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:39:06,243 INFO  L85        PathProgramCache]: Analyzing trace with hash -1870898652, now seen corresponding path program 1 times
[2023-11-06 22:39:06,244 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:39:06,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18878103]
[2023-11-06 22:39:06,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:39:06,245 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:39:30,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:39:37,526 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 22:39:37,526 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:39:37,526 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18878103]
[2023-11-06 22:39:37,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18878103] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:39:37,527 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:39:37,527 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-06 22:39:37,528 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187740816]
[2023-11-06 22:39:37,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:39:37,533 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-06 22:39:37,533 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:39:37,536 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-06 22:39:37,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-06 22:39:37,538 INFO  L87              Difference]: Start difference. First operand 4994 states and 8309 transitions. Second operand  has 5 states, 5 states have (on average 394.4) internal successors, (1972), 5 states have internal predecessors, (1972), 0 states have call successors, (0), 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 22:39:38,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:39:38,562 INFO  L93              Difference]: Finished difference Result 10971 states and 18253 transitions.
[2023-11-06 22:39:38,562 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-11-06 22:39:38,563 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 394.4) internal successors, (1972), 5 states have internal predecessors, (1972), 0 states have call successors, (0), 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 1972
[2023-11-06 22:39:38,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:39:38,574 INFO  L225             Difference]: With dead ends: 10971
[2023-11-06 22:39:38,574 INFO  L226             Difference]: Without dead ends: 6051
[2023-11-06 22:39:38,580 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2023-11-06 22:39:38,582 INFO  L413           NwaCegarLoop]: 5965 mSDtfsCounter, 10244 mSDsluCounter, 6869 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10244 SdHoareTripleChecker+Valid, 12834 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2023-11-06 22:39:38,587 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10244 Valid, 12834 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2023-11-06 22:39:38,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6051 states.
[2023-11-06 22:39:38,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 4994.
[2023-11-06 22:39:38,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4994 states, 4993 states have (on average 1.6637292209092729) internal successors, (8307), 4993 states have internal predecessors, (8307), 0 states have call successors, (0), 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 22:39:38,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 8307 transitions.
[2023-11-06 22:39:38,697 INFO  L78                 Accepts]: Start accepts. Automaton has 4994 states and 8307 transitions. Word has length 1972
[2023-11-06 22:39:38,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:39:38,698 INFO  L495      AbstractCegarLoop]: Abstraction has 4994 states and 8307 transitions.
[2023-11-06 22:39:38,699 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 394.4) internal successors, (1972), 5 states have internal predecessors, (1972), 0 states have call successors, (0), 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 22:39:38,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 4994 states and 8307 transitions.
[2023-11-06 22:39:38,738 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1974
[2023-11-06 22:39:38,738 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:39:38,739 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1]
[2023-11-06 22:39:38,740 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-06 22:39:38,740 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:39:38,741 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:39:38,742 INFO  L85        PathProgramCache]: Analyzing trace with hash -525424921, now seen corresponding path program 1 times
[2023-11-06 22:39:38,742 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:39:38,742 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444251847]
[2023-11-06 22:39:38,743 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:39:38,743 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-06 22:40:09,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-06 22:40:17,082 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 22:40:17,082 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-06 22:40:17,082 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444251847]
[2023-11-06 22:40:17,083 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444251847] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-06 22:40:17,083 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-06 22:40:17,083 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-06 22:40:17,083 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776690157]
[2023-11-06 22:40:17,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-06 22:40:17,087 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-06 22:40:17,087 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-06 22:40:17,090 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-06 22:40:17,091 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-06 22:40:17,092 INFO  L87              Difference]: Start difference. First operand 4994 states and 8307 transitions. Second operand  has 7 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 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 22:40:18,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-06 22:40:18,401 INFO  L93              Difference]: Finished difference Result 9984 states and 16604 transitions.
[2023-11-06 22:40:18,401 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-11-06 22:40:18,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 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 1973
[2023-11-06 22:40:18,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-06 22:40:18,414 INFO  L225             Difference]: With dead ends: 9984
[2023-11-06 22:40:18,414 INFO  L226             Difference]: Without dead ends: 5064
[2023-11-06 22:40:18,420 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2023-11-06 22:40:18,421 INFO  L413           NwaCegarLoop]: 5166 mSDtfsCounter, 10606 mSDsluCounter, 10666 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10606 SdHoareTripleChecker+Valid, 15832 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2023-11-06 22:40:18,422 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10606 Valid, 15832 Invalid, 825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2023-11-06 22:40:18,429 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5064 states.
[2023-11-06 22:40:18,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 5000.
[2023-11-06 22:40:18,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5000 states, 4999 states have (on average 1.6629325865173035) internal successors, (8313), 4999 states have internal predecessors, (8313), 0 states have call successors, (0), 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 22:40:18,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 8313 transitions.
[2023-11-06 22:40:18,529 INFO  L78                 Accepts]: Start accepts. Automaton has 5000 states and 8313 transitions. Word has length 1973
[2023-11-06 22:40:18,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-06 22:40:18,530 INFO  L495      AbstractCegarLoop]: Abstraction has 5000 states and 8313 transitions.
[2023-11-06 22:40:18,530 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 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 22:40:18,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 5000 states and 8313 transitions.
[2023-11-06 22:40:18,568 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1974
[2023-11-06 22:40:18,568 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-06 22:40:18,570 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1]
[2023-11-06 22:40:18,570 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-06 22:40:18,571 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-06 22:40:18,571 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-06 22:40:18,572 INFO  L85        PathProgramCache]: Analyzing trace with hash -1466738523, now seen corresponding path program 1 times
[2023-11-06 22:40:18,573 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-06 22:40:18,573 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474147979]
[2023-11-06 22:40:18,573 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-06 22:40:18,574 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms