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


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


Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 02:04:46,208 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-24 02:04:46,305 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-24 02:04:46,311 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 02:04:46,312 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 02:04:46,364 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 02:04:46,367 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 02:04:46,367 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 02:04:46,368 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 02:04:46,368 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-24 02:04:46,368 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 02:04:46,368 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 02:04:46,369 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 02:04:46,369 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-24 02:04:46,369 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-24 02:04:46,369 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 02:04:46,369 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-24 02:04:46,369 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 02:04:46,370 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-24 02:04:46,371 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 02:04:46,371 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-24 02:04:46,373 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 02:04:46,373 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-24 02:04:46,373 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:04:46,373 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 02:04:46,373 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-24 02:04:46,373 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:04:46,374 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 02:04:46,374 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 02:04:46,375 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 02:04:46,375 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4406295bba4931a09fe5e1b298f76c629de8bcf0ce50103cf375e6c315bcbc
[2024-11-24 02:04:46,791 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 02:04:46,802 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 02:04:46,805 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 02:04:46,806 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-24 02:04:46,807 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-24 02:04:46,808 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2024-11-24 02:04:50,040 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/data/ea4b979e5/c820ec3b263e4652bffd26f334e3d01d/FLAGe18199b9a
[2024-11-24 02:04:50,811 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-24 02:04:50,811 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2024-11-24 02:04:50,867 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/data/ea4b979e5/c820ec3b263e4652bffd26f334e3d01d/FLAGe18199b9a
[2024-11-24 02:04:50,894 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/data/ea4b979e5/c820ec3b263e4652bffd26f334e3d01d
[2024-11-24 02:04:50,897 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 02:04:50,901 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 02:04:50,903 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 02:04:50,903 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 02:04:50,909 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 02:04:50,910 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:50" (1/1) ...
[2024-11-24 02:04:50,912 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20991fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:50, skipping insertion in model container
[2024-11-24 02:04:50,913 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:04:50" (1/1) ...
[2024-11-24 02:04:51,072 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-24 02:04:51,405 WARN  L250   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_70550f92-d6c8-4ee1-940f-b1b520c21571/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2024-11-24 02:04:52,294 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-24 02:04:52,306 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-24 02:04:52,319 WARN  L250   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_70550f92-d6c8-4ee1-940f-b1b520c21571/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.telephony.4.prop1-func-interl.c[1176,1189]
[2024-11-24 02:04:53,079 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-24 02:04:53,096 INFO  L204         MainTranslator]: Completed translation
[2024-11-24 02:04:53,097 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53 WrapperNode
[2024-11-24 02:04:53,098 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 02:04:53,099 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 02:04:53,099 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 02:04:53,099 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 02:04:53,108 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:53,344 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:55,818 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22207
[2024-11-24 02:04:55,819 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 02:04:55,820 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 02:04:55,820 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 02:04:55,820 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 02:04:55,830 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:55,830 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:56,583 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:56,897 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-24 02:04:56,897 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:56,898 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:57,826 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:57,886 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:58,006 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:58,149 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:58,227 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:58,801 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 02:04:58,802 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 02:04:58,802 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 02:04:58,802 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-24 02:04:58,803 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (1/1) ...
[2024-11-24 02:04:58,808 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 02:04:58,822 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 02:04:58,835 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 02:04:58,842 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70550f92-d6c8-4ee1-940f-b1b520c21571/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 02:04:58,867 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 02:04:58,867 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 02:04:58,867 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 02:04:58,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 02:05:00,453 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-24 02:05:00,455 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 02:06:11,307 INFO  L?                        ?]: Removed 12511 outVars from TransFormulas that were not future-live.
[2024-11-24 02:06:11,308 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-24 02:06:11,448 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 02:06:11,449 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-24 02:06:11,449 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:06:11 BoogieIcfgContainer
[2024-11-24 02:06:11,449 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 02:06:11,453 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 02:06:11,453 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 02:06:11,459 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-24 02:06:11,460 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:04:50" (1/3) ...
[2024-11-24 02:06:11,460 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d3bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:06:11, skipping insertion in model container
[2024-11-24 02:06:11,462 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:04:53" (2/3) ...
[2024-11-24 02:06:11,462 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d3bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:06:11, skipping insertion in model container
[2024-11-24 02:06:11,463 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:06:11" (3/3) ...
[2024-11-24 02:06:11,464 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.telephony.4.prop1-func-interl.c
[2024-11-24 02:06:11,487 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 02:06:11,489 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.telephony.4.prop1-func-interl.c that has 1 procedures, 7854 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-24 02:06:11,734 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 02:06:11,749 INFO  L333      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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cbc60fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 02:06:11,750 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-24 02:06:11,776 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7854 states, 7852 states have (on average 1.5039480387162507) internal successors, (11809), 7853 states have internal predecessors, (11809), 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)
[2024-11-24 02:06:11,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 310
[2024-11-24 02:06:11,816 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:11,817 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:06:11,818 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:11,824 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:11,826 INFO  L85        PathProgramCache]: Analyzing trace with hash -1923731594, now seen corresponding path program 1 times
[2024-11-24 02:06:11,836 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:11,838 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832712978]
[2024-11-24 02:06:11,839 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:11,840 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:12,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:06:14,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:06:14,582 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:06:14,584 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832712978]
[2024-11-24 02:06:14,586 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832712978] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:06:14,586 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:06:14,586 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:06:14,588 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034974581]
[2024-11-24 02:06:14,589 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:06:14,596 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:06:14,597 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:06:14,628 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:06:14,629 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:06:14,652 INFO  L87              Difference]: Start difference. First operand  has 7854 states, 7852 states have (on average 1.5039480387162507) internal successors, (11809), 7853 states have internal predecessors, (11809), 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 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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)
[2024-11-24 02:06:15,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:06:15,347 INFO  L93              Difference]: Finished difference Result 15413 states and 23179 transitions.
[2024-11-24 02:06:15,350 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:06:15,352 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 309
[2024-11-24 02:06:15,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:06:15,420 INFO  L225             Difference]: With dead ends: 15413
[2024-11-24 02:06:15,420 INFO  L226             Difference]: Without dead ends: 7853
[2024-11-24 02:06:15,436 INFO  L434           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
[2024-11-24 02:06:15,440 INFO  L435           NwaCegarLoop]: 11803 mSDtfsCounter, 0 mSDsluCounter, 23600 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35403 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 02:06:15,441 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35403 Invalid, 11 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 02:06:15,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7853 states.
[2024-11-24 02:06:15,747 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 7853.
[2024-11-24 02:06:15,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7853 states, 7852 states have (on average 1.5036933265410086) internal successors, (11807), 7852 states have internal predecessors, (11807), 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)
[2024-11-24 02:06:15,818 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 11807 transitions.
[2024-11-24 02:06:15,823 INFO  L78                 Accepts]: Start accepts. Automaton has 7853 states and 11807 transitions. Word has length 309
[2024-11-24 02:06:15,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:06:15,825 INFO  L471      AbstractCegarLoop]: Abstraction has 7853 states and 11807 transitions.
[2024-11-24 02:06:15,825 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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)
[2024-11-24 02:06:15,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 7853 states and 11807 transitions.
[2024-11-24 02:06:15,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 311
[2024-11-24 02:06:15,841 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:15,842 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:06:15,842 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 02:06:15,842 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:15,843 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:15,843 INFO  L85        PathProgramCache]: Analyzing trace with hash 495559859, now seen corresponding path program 1 times
[2024-11-24 02:06:15,844 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:15,844 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327292977]
[2024-11-24 02:06:15,844 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:15,844 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:16,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:06:16,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:06:16,941 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:06:16,941 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327292977]
[2024-11-24 02:06:16,941 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327292977] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:06:16,941 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:06:16,941 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:06:16,941 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995013040]
[2024-11-24 02:06:16,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:06:16,943 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:06:16,943 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:06:16,944 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:06:16,947 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:06:16,948 INFO  L87              Difference]: Start difference. First operand 7853 states and 11807 transitions. Second operand  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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)
[2024-11-24 02:06:17,364 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:06:17,365 INFO  L93              Difference]: Finished difference Result 15414 states and 23177 transitions.
[2024-11-24 02:06:17,365 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:06:17,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310
[2024-11-24 02:06:17,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:06:17,413 INFO  L225             Difference]: With dead ends: 15414
[2024-11-24 02:06:17,413 INFO  L226             Difference]: Without dead ends: 7855
[2024-11-24 02:06:17,423 INFO  L434           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
[2024-11-24 02:06:17,424 INFO  L435           NwaCegarLoop]: 11803 mSDtfsCounter, 0 mSDsluCounter, 23596 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35399 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 02:06:17,426 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35399 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 02:06:17,443 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7855 states.
[2024-11-24 02:06:17,613 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7855.
[2024-11-24 02:06:17,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7855 states, 7854 states have (on average 1.5035650623885919) internal successors, (11809), 7854 states have internal predecessors, (11809), 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)
[2024-11-24 02:06:17,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7855 states to 7855 states and 11809 transitions.
[2024-11-24 02:06:17,680 INFO  L78                 Accepts]: Start accepts. Automaton has 7855 states and 11809 transitions. Word has length 310
[2024-11-24 02:06:17,683 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:06:17,683 INFO  L471      AbstractCegarLoop]: Abstraction has 7855 states and 11809 transitions.
[2024-11-24 02:06:17,684 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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)
[2024-11-24 02:06:17,684 INFO  L276                IsEmpty]: Start isEmpty. Operand 7855 states and 11809 transitions.
[2024-11-24 02:06:17,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2024-11-24 02:06:17,690 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:17,691 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:06:17,691 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-24 02:06:17,691 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:17,692 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:17,693 INFO  L85        PathProgramCache]: Analyzing trace with hash 1379489775, now seen corresponding path program 1 times
[2024-11-24 02:06:17,693 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:17,693 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984960534]
[2024-11-24 02:06:17,693 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:17,694 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:17,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:06:18,661 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:06:18,663 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:06:18,663 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984960534]
[2024-11-24 02:06:18,664 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984960534] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:06:18,664 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:06:18,664 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:06:18,664 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007579225]
[2024-11-24 02:06:18,664 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:06:18,665 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:06:18,667 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:06:18,668 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:06:18,668 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:06:18,668 INFO  L87              Difference]: Start difference. First operand 7855 states and 11809 transitions. Second operand  has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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)
[2024-11-24 02:06:19,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:06:19,089 INFO  L93              Difference]: Finished difference Result 15418 states and 23181 transitions.
[2024-11-24 02:06:19,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:06:19,090 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 311
[2024-11-24 02:06:19,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:06:19,124 INFO  L225             Difference]: With dead ends: 15418
[2024-11-24 02:06:19,124 INFO  L226             Difference]: Without dead ends: 7857
[2024-11-24 02:06:19,134 INFO  L434           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
[2024-11-24 02:06:19,138 INFO  L435           NwaCegarLoop]: 11803 mSDtfsCounter, 0 mSDsluCounter, 23590 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35393 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 02:06:19,138 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35393 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 02:06:19,158 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7857 states.
[2024-11-24 02:06:19,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7857.
[2024-11-24 02:06:19,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7857 states, 7856 states have (on average 1.5034368635437882) internal successors, (11811), 7856 states have internal predecessors, (11811), 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)
[2024-11-24 02:06:19,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7857 states to 7857 states and 11811 transitions.
[2024-11-24 02:06:19,361 INFO  L78                 Accepts]: Start accepts. Automaton has 7857 states and 11811 transitions. Word has length 311
[2024-11-24 02:06:19,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:06:19,363 INFO  L471      AbstractCegarLoop]: Abstraction has 7857 states and 11811 transitions.
[2024-11-24 02:06:19,363 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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)
[2024-11-24 02:06:19,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 7857 states and 11811 transitions.
[2024-11-24 02:06:19,372 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 313
[2024-11-24 02:06:19,372 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:19,372 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 02:06:19,373 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 02:06:19,373 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:19,373 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:19,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 723398842, now seen corresponding path program 1 times
[2024-11-24 02:06:19,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:19,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767435927]
[2024-11-24 02:06:19,374 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:19,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:19,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:06:20,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:06:20,763 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:06:20,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767435927]
[2024-11-24 02:06:20,764 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767435927] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:06:20,764 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:06:20,764 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 02:06:20,764 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889152629]
[2024-11-24 02:06:20,765 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:06:20,765 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-24 02:06:20,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:06:20,766 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-24 02:06:20,766 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-24 02:06:20,767 INFO  L87              Difference]: Start difference. First operand 7857 states and 11811 transitions. Second operand  has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 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)
[2024-11-24 02:06:21,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:06:21,385 INFO  L93              Difference]: Finished difference Result 21713 states and 32650 transitions.
[2024-11-24 02:06:21,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-24 02:06:21,386 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 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 312
[2024-11-24 02:06:21,387 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:06:21,447 INFO  L225             Difference]: With dead ends: 21713
[2024-11-24 02:06:21,447 INFO  L226             Difference]: Without dead ends: 14150
[2024-11-24 02:06:21,458 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-24 02:06:21,459 INFO  L435           NwaCegarLoop]: 11799 mSDtfsCounter, 9607 mSDsluCounter, 34952 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9607 SdHoareTripleChecker+Valid, 46751 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-24 02:06:21,459 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9607 Valid, 46751 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-24 02:06:21,487 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14150 states.
[2024-11-24 02:06:21,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 8165.
[2024-11-24 02:06:21,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8165 states, 8164 states have (on average 1.5033072023517884) internal successors, (12273), 8164 states have internal predecessors, (12273), 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)
[2024-11-24 02:06:21,947 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12273 transitions.
[2024-11-24 02:06:21,947 INFO  L78                 Accepts]: Start accepts. Automaton has 8165 states and 12273 transitions. Word has length 312
[2024-11-24 02:06:21,948 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:06:21,948 INFO  L471      AbstractCegarLoop]: Abstraction has 8165 states and 12273 transitions.
[2024-11-24 02:06:21,948 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 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)
[2024-11-24 02:06:21,948 INFO  L276                IsEmpty]: Start isEmpty. Operand 8165 states and 12273 transitions.
[2024-11-24 02:06:22,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4020
[2024-11-24 02:06:22,152 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:22,154 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-24 02:06:22,155 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-24 02:06:22,155 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:22,157 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:22,160 INFO  L85        PathProgramCache]: Analyzing trace with hash -1657610999, now seen corresponding path program 1 times
[2024-11-24 02:06:22,160 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:22,160 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098931511]
[2024-11-24 02:06:22,162 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:22,162 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:32,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:06:50,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:06:50,796 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:06:50,797 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098931511]
[2024-11-24 02:06:50,797 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098931511] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:06:50,797 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:06:50,798 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:06:50,798 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849249583]
[2024-11-24 02:06:50,798 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:06:50,807 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:06:50,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:06:50,814 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:06:50,814 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:06:50,816 INFO  L87              Difference]: Start difference. First operand 8165 states and 12273 transitions. Second operand  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 4 states have internal predecessors, (4019), 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)
[2024-11-24 02:06:51,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:06:51,379 INFO  L93              Difference]: Finished difference Result 15728 states and 23644 transitions.
[2024-11-24 02:06:51,380 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:06:51,382 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 4 states have internal predecessors, (4019), 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 4019
[2024-11-24 02:06:51,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:06:51,408 INFO  L225             Difference]: With dead ends: 15728
[2024-11-24 02:06:51,408 INFO  L226             Difference]: Without dead ends: 8165
[2024-11-24 02:06:51,420 INFO  L434           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
[2024-11-24 02:06:51,423 INFO  L435           NwaCegarLoop]: 11775 mSDtfsCounter, 11499 mSDsluCounter, 11773 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11499 SdHoareTripleChecker+Valid, 23548 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-24 02:06:51,423 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11499 Valid, 23548 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-24 02:06:51,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8165 states.
[2024-11-24 02:06:51,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165.
[2024-11-24 02:06:51,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8165 states, 8164 states have (on average 1.5031847133757963) internal successors, (12272), 8164 states have internal predecessors, (12272), 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)
[2024-11-24 02:06:51,791 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12272 transitions.
[2024-11-24 02:06:51,791 INFO  L78                 Accepts]: Start accepts. Automaton has 8165 states and 12272 transitions. Word has length 4019
[2024-11-24 02:06:51,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:06:51,793 INFO  L471      AbstractCegarLoop]: Abstraction has 8165 states and 12272 transitions.
[2024-11-24 02:06:51,795 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1004.75) internal successors, (4019), 4 states have internal predecessors, (4019), 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)
[2024-11-24 02:06:51,796 INFO  L276                IsEmpty]: Start isEmpty. Operand 8165 states and 12272 transitions.
[2024-11-24 02:06:52,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4021
[2024-11-24 02:06:52,305 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:06:52,308 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-24 02:06:52,309 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-24 02:06:52,309 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:06:52,311 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:06:52,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 1914401221, now seen corresponding path program 1 times
[2024-11-24 02:06:52,314 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:06:52,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150094543]
[2024-11-24 02:06:52,316 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:06:52,316 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:06:59,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:07:07,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:07:07,905 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:07:07,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150094543]
[2024-11-24 02:07:07,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150094543] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:07:07,905 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:07:07,906 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:07:07,906 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347679541]
[2024-11-24 02:07:07,906 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:07:07,912 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:07:07,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:07:07,916 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:07:07,916 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:07:07,918 INFO  L87              Difference]: Start difference. First operand 8165 states and 12272 transitions. Second operand  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 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)
[2024-11-24 02:07:08,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:07:08,697 INFO  L93              Difference]: Finished difference Result 15728 states and 23642 transitions.
[2024-11-24 02:07:08,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:07:08,700 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 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 4020
[2024-11-24 02:07:08,701 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:07:08,721 INFO  L225             Difference]: With dead ends: 15728
[2024-11-24 02:07:08,721 INFO  L226             Difference]: Without dead ends: 8165
[2024-11-24 02:07:08,729 INFO  L434           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
[2024-11-24 02:07:08,730 INFO  L435           NwaCegarLoop]: 11774 mSDtfsCounter, 11481 mSDsluCounter, 11772 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11481 SdHoareTripleChecker+Valid, 23546 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-24 02:07:08,731 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11481 Valid, 23546 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-24 02:07:08,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8165 states.
[2024-11-24 02:07:09,310 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165.
[2024-11-24 02:07:09,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8165 states, 8164 states have (on average 1.503062224399804) internal successors, (12271), 8164 states have internal predecessors, (12271), 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)
[2024-11-24 02:07:09,335 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12271 transitions.
[2024-11-24 02:07:09,335 INFO  L78                 Accepts]: Start accepts. Automaton has 8165 states and 12271 transitions. Word has length 4020
[2024-11-24 02:07:09,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:07:09,337 INFO  L471      AbstractCegarLoop]: Abstraction has 8165 states and 12271 transitions.
[2024-11-24 02:07:09,338 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.0) internal successors, (4020), 4 states have internal predecessors, (4020), 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)
[2024-11-24 02:07:09,338 INFO  L276                IsEmpty]: Start isEmpty. Operand 8165 states and 12271 transitions.
[2024-11-24 02:07:09,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4022
[2024-11-24 02:07:09,467 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:07:09,469 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-24 02:07:09,470 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-24 02:07:09,470 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:07:09,472 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:07:09,474 INFO  L85        PathProgramCache]: Analyzing trace with hash -186977940, now seen corresponding path program 1 times
[2024-11-24 02:07:09,475 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:07:09,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124713301]
[2024-11-24 02:07:09,476 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:07:09,476 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 02:07:15,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 02:07:24,938 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 02:07:24,938 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 02:07:24,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124713301]
[2024-11-24 02:07:24,939 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124713301] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 02:07:24,939 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 02:07:24,939 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-24 02:07:24,939 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364830146]
[2024-11-24 02:07:24,940 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 02:07:24,945 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-24 02:07:24,945 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 02:07:24,951 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-24 02:07:24,951 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-24 02:07:24,953 INFO  L87              Difference]: Start difference. First operand 8165 states and 12271 transitions. Second operand  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 4 states have internal predecessors, (4021), 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)
[2024-11-24 02:07:25,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-24 02:07:25,439 INFO  L93              Difference]: Finished difference Result 15728 states and 23640 transitions.
[2024-11-24 02:07:25,440 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-24 02:07:25,442 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 4 states have internal predecessors, (4021), 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 4021
[2024-11-24 02:07:25,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-24 02:07:25,465 INFO  L225             Difference]: With dead ends: 15728
[2024-11-24 02:07:25,465 INFO  L226             Difference]: Without dead ends: 8165
[2024-11-24 02:07:25,473 INFO  L434           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
[2024-11-24 02:07:25,475 INFO  L435           NwaCegarLoop]: 11773 mSDtfsCounter, 11463 mSDsluCounter, 11771 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11463 SdHoareTripleChecker+Valid, 23544 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-24 02:07:25,475 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11463 Valid, 23544 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-24 02:07:25,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8165 states.
[2024-11-24 02:07:25,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165.
[2024-11-24 02:07:25,664 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8165 states, 8164 states have (on average 1.5029397354238119) internal successors, (12270), 8164 states have internal predecessors, (12270), 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)
[2024-11-24 02:07:25,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12270 transitions.
[2024-11-24 02:07:25,685 INFO  L78                 Accepts]: Start accepts. Automaton has 8165 states and 12270 transitions. Word has length 4021
[2024-11-24 02:07:25,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-24 02:07:25,688 INFO  L471      AbstractCegarLoop]: Abstraction has 8165 states and 12270 transitions.
[2024-11-24 02:07:25,690 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1005.25) internal successors, (4021), 4 states have internal predecessors, (4021), 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)
[2024-11-24 02:07:25,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 8165 states and 12270 transitions.
[2024-11-24 02:07:25,976 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4023
[2024-11-24 02:07:25,976 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-24 02:07:25,980 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2024-11-24 02:07:25,980 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-24 02:07:25,981 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-24 02:07:25,982 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 02:07:25,985 INFO  L85        PathProgramCache]: Analyzing trace with hash -1853552248, now seen corresponding path program 1 times
[2024-11-24 02:07:25,985 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 02:07:25,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314336244]
[2024-11-24 02:07:25,987 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 02:07:25,987 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms