./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB --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 67e854847013eea0627c59f2faf6d2df8bf47ec6294a18e105ec3c8c003a9e1d
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-27 20:10:16,885 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-27 20:10:17,014 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-27 20:10:17,025 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-27 20:10:17,027 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-27 20:10:17,069 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-27 20:10:17,070 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-27 20:10:17,071 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-27 20:10:17,071 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-27 20:10:17,072 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-27 20:10:17,072 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-27 20:10:17,072 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-27 20:10:17,073 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-27 20:10:17,073 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-27 20:10:17,073 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-27 20:10:17,074 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-27 20:10:17,074 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-27 20:10:17,074 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-27 20:10:17,074 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-27 20:10:17,074 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-27 20:10:17,075 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-27 20:10:17,075 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-27 20:10:17,078 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-27 20:10:17,078 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-27 20:10:17,078 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-27 20:10:17,078 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-27 20:10:17,079 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-27 20:10:17,079 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-27 20:10:17,080 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-27 20:10:17,080 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-27 20:10:17,083 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-27 20:10:17,083 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-27 20:10:17,083 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-27 20:10:17,084 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-27 20:10:17,084 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_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB
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 -> 67e854847013eea0627c59f2faf6d2df8bf47ec6294a18e105ec3c8c003a9e1d
[2024-11-27 20:10:17,474 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-27 20:10:17,490 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-27 20:10:17,494 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-27 20:10:17,495 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-27 20:10:17,496 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-27 20:10:17,497 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2024-11-27 20:10:20,805 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/data/efd7ee5f8/0b59c96869434a4cadf2602c47989fad/FLAG46b541a29
[2024-11-27 20:10:21,732 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-27 20:10:21,733 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2024-11-27 20:10:21,800 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/data/efd7ee5f8/0b59c96869434a4cadf2602c47989fad/FLAG46b541a29
[2024-11-27 20:10:21,832 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/data/efd7ee5f8/0b59c96869434a4cadf2602c47989fad
[2024-11-27 20:10:21,837 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-27 20:10:21,839 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-27 20:10:21,841 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-27 20:10:21,841 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-27 20:10:21,849 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-27 20:10:21,850 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:21" (1/1) ...
[2024-11-27 20:10:21,852 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36351e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21, skipping insertion in model container
[2024-11-27 20:10:21,852 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:21" (1/1) ...
[2024-11-27 20:10:22,042 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-27 20:10:22,395 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_13fbcc1f-3fc4-410a-859d-f64f93ba5493/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c[1171,1184]
[2024-11-27 20:10:23,664 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-27 20:10:23,685 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-27 20:10:23,700 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_13fbcc1f-3fc4-410a-859d-f64f93ba5493/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lup.3.prop1-back-serstep.c[1171,1184]
[2024-11-27 20:10:24,479 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-27 20:10:24,496 INFO  L204         MainTranslator]: Completed translation
[2024-11-27 20:10:24,497 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24 WrapperNode
[2024-11-27 20:10:24,497 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-27 20:10:24,499 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-27 20:10:24,499 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-27 20:10:24,499 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-27 20:10:24,507 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:24,766 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:27,255 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24421
[2024-11-27 20:10:27,256 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-27 20:10:27,256 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-27 20:10:27,256 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-27 20:10:27,257 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-27 20:10:27,268 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:27,269 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:27,822 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:28,290 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].
[2024-11-27 20:10:28,290 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:28,291 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,043 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,101 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,214 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,320 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,414 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,893 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-27 20:10:29,895 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-27 20:10:29,896 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-27 20:10:29,896 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-27 20:10:29,898 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (1/1) ...
[2024-11-27 20:10:29,905 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-27 20:10:29,921 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-27 20:10:29,939 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-27 20:10:29,948 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13fbcc1f-3fc4-410a-859d-f64f93ba5493/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-27 20:10:29,978 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-27 20:10:29,978 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-27 20:10:29,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-27 20:10:29,978 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-27 20:10:31,861 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-27 20:10:31,863 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-27 20:11:44,884 INFO  L?                        ?]: Removed 13880 outVars from TransFormulas that were not future-live.
[2024-11-27 20:11:44,884 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-27 20:11:45,034 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-27 20:11:45,035 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-27 20:11:45,036 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:45 BoogieIcfgContainer
[2024-11-27 20:11:45,036 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-27 20:11:45,038 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-27 20:11:45,039 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-27 20:11:45,044 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-27 20:11:45,044 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:10:21" (1/3) ...
[2024-11-27 20:11:45,045 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c247e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:45, skipping insertion in model container
[2024-11-27 20:11:45,045 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:24" (2/3) ...
[2024-11-27 20:11:45,046 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c247e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:45, skipping insertion in model container
[2024-11-27 20:11:45,046 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:45" (3/3) ...
[2024-11-27 20:11:45,047 INFO  L128   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lup.3.prop1-back-serstep.c
[2024-11-27 20:11:45,064 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-27 20:11:45,066 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.lup.3.prop1-back-serstep.c that has 1 procedures, 8430 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-27 20:11:45,306 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-27 20:11:45,325 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;@691d160, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-27 20:11:45,326 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-27 20:11:45,357 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 8430 states, 8428 states have (on average 1.4998813478879924) internal successors, (12641), 8429 states have internal predecessors, (12641), 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)
[2024-11-27 20:11:45,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 654
[2024-11-27 20:11:45,406 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:11:45,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-27 20:11:45,408 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:11:45,416 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:11:45,417 INFO  L85        PathProgramCache]: Analyzing trace with hash -2108637161, now seen corresponding path program 1 times
[2024-11-27 20:11:45,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:11:45,425 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335608974]
[2024-11-27 20:11:45,426 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:11:45,426 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 20:11:46,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 20:11:49,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 20:11:49,796 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 20:11:49,798 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335608974]
[2024-11-27 20:11:49,799 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335608974] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 20:11:49,799 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 20:11:49,800 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-27 20:11:49,801 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693309234]
[2024-11-27 20:11:49,802 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 20:11:49,811 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-27 20:11:49,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 20:11:49,840 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-27 20:11:49,841 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-27 20:11:49,865 INFO  L87              Difference]: Start difference. First operand  has 8430 states, 8428 states have (on average 1.4998813478879924) internal successors, (12641), 8429 states have internal predecessors, (12641), 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 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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)
[2024-11-27 20:11:50,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-27 20:11:50,531 INFO  L93              Difference]: Finished difference Result 16625 states and 24933 transitions.
[2024-11-27 20:11:50,532 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-27 20:11:50,534 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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 653
[2024-11-27 20:11:50,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-27 20:11:50,613 INFO  L225             Difference]: With dead ends: 16625
[2024-11-27 20:11:50,613 INFO  L226             Difference]: Without dead ends: 8429
[2024-11-27 20:11:50,632 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
[2024-11-27 20:11:50,639 INFO  L435           NwaCegarLoop]: 12635 mSDtfsCounter, 0 mSDsluCounter, 25264 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37899 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-27 20:11:50,643 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37899 Invalid, 11 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-27 20:11:50,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8429 states.
[2024-11-27 20:11:50,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8429 to 8429.
[2024-11-27 20:11:50,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8429 states, 8428 states have (on average 1.4996440436639773) internal successors, (12639), 8428 states have internal predecessors, (12639), 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)
[2024-11-27 20:11:51,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 12639 transitions.
[2024-11-27 20:11:51,013 INFO  L78                 Accepts]: Start accepts. Automaton has 8429 states and 12639 transitions. Word has length 653
[2024-11-27 20:11:51,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-27 20:11:51,016 INFO  L471      AbstractCegarLoop]: Abstraction has 8429 states and 12639 transitions.
[2024-11-27 20:11:51,017 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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)
[2024-11-27 20:11:51,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 8429 states and 12639 transitions.
[2024-11-27 20:11:51,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 655
[2024-11-27 20:11:51,039 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:11:51,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-27 20:11:51,040 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-27 20:11:51,041 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:11:51,042 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:11:51,042 INFO  L85        PathProgramCache]: Analyzing trace with hash -941543186, now seen corresponding path program 1 times
[2024-11-27 20:11:51,043 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:11:51,043 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977644050]
[2024-11-27 20:11:51,043 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:11:51,044 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 20:11:51,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 20:11:53,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 20:11:53,083 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 20:11:53,083 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977644050]
[2024-11-27 20:11:53,084 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977644050] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 20:11:53,084 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 20:11:53,084 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-27 20:11:53,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981516063]
[2024-11-27 20:11:53,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 20:11:53,086 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-27 20:11:53,088 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 20:11:53,090 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-27 20:11:53,090 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-27 20:11:53,091 INFO  L87              Difference]: Start difference. First operand 8429 states and 12639 transitions. Second operand  has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 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)
[2024-11-27 20:11:53,531 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-27 20:11:53,532 INFO  L93              Difference]: Finished difference Result 16626 states and 24931 transitions.
[2024-11-27 20:11:53,532 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-27 20:11:53,533 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 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 654
[2024-11-27 20:11:53,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-27 20:11:53,569 INFO  L225             Difference]: With dead ends: 16626
[2024-11-27 20:11:53,569 INFO  L226             Difference]: Without dead ends: 8431
[2024-11-27 20:11:53,579 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
[2024-11-27 20:11:53,581 INFO  L435           NwaCegarLoop]: 12635 mSDtfsCounter, 0 mSDsluCounter, 25260 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37895 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
[2024-11-27 20:11:53,583 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37895 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-27 20:11:53,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8431 states.
[2024-11-27 20:11:53,779 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8431.
[2024-11-27 20:11:53,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8431 states, 8430 states have (on average 1.4995255041518387) internal successors, (12641), 8430 states have internal predecessors, (12641), 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)
[2024-11-27 20:11:53,846 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 12641 transitions.
[2024-11-27 20:11:53,847 INFO  L78                 Accepts]: Start accepts. Automaton has 8431 states and 12641 transitions. Word has length 654
[2024-11-27 20:11:53,848 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-27 20:11:53,851 INFO  L471      AbstractCegarLoop]: Abstraction has 8431 states and 12641 transitions.
[2024-11-27 20:11:53,853 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 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)
[2024-11-27 20:11:53,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 8431 states and 12641 transitions.
[2024-11-27 20:11:53,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 656
[2024-11-27 20:11:53,877 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:11:53,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-27 20:11:53,877 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-27 20:11:53,877 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:11:53,878 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:11:53,878 INFO  L85        PathProgramCache]: Analyzing trace with hash -221029424, now seen corresponding path program 1 times
[2024-11-27 20:11:53,879 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:11:53,879 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896553315]
[2024-11-27 20:11:53,879 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:11:53,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 20:11:54,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 20:11:56,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 20:11:56,060 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 20:11:56,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896553315]
[2024-11-27 20:11:56,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896553315] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 20:11:56,061 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 20:11:56,061 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-27 20:11:56,061 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144528328]
[2024-11-27 20:11:56,061 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 20:11:56,062 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-27 20:11:56,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 20:11:56,065 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-27 20:11:56,065 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-27 20:11:56,066 INFO  L87              Difference]: Start difference. First operand 8431 states and 12641 transitions. Second operand  has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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)
[2024-11-27 20:11:56,779 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-27 20:11:56,779 INFO  L93              Difference]: Finished difference Result 24807 states and 37198 transitions.
[2024-11-27 20:11:56,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-27 20:11:56,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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 655
[2024-11-27 20:11:56,782 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-27 20:11:56,858 INFO  L225             Difference]: With dead ends: 24807
[2024-11-27 20:11:56,859 INFO  L226             Difference]: Without dead ends: 16610
[2024-11-27 20:11:56,872 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
[2024-11-27 20:11:56,878 INFO  L435           NwaCegarLoop]: 12633 mSDtfsCounter, 11968 mSDsluCounter, 37544 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11968 SdHoareTripleChecker+Valid, 50177 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-27 20:11:56,878 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [11968 Valid, 50177 Invalid, 22 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-27 20:11:56,908 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16610 states.
[2024-11-27 20:11:57,141 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16610 to 9489.
[2024-11-27 20:11:57,155 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9489 states, 9488 states have (on average 1.4994730185497471) internal successors, (14227), 9488 states have internal predecessors, (14227), 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)
[2024-11-27 20:11:57,198 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 14227 transitions.
[2024-11-27 20:11:57,199 INFO  L78                 Accepts]: Start accepts. Automaton has 9489 states and 14227 transitions. Word has length 655
[2024-11-27 20:11:57,201 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-27 20:11:57,203 INFO  L471      AbstractCegarLoop]: Abstraction has 9489 states and 14227 transitions.
[2024-11-27 20:11:57,204 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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)
[2024-11-27 20:11:57,204 INFO  L276                IsEmpty]: Start isEmpty. Operand 9489 states and 14227 transitions.
[2024-11-27 20:11:57,757 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4753
[2024-11-27 20:11:57,757 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:11:57,764 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-27 20:11:57,765 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-27 20:11:57,765 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:11:57,767 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:11:57,770 INFO  L85        PathProgramCache]: Analyzing trace with hash 674645070, now seen corresponding path program 1 times
[2024-11-27 20:11:57,770 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:11:57,770 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560726297]
[2024-11-27 20:11:57,772 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:11:57,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 20:12:08,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 20:12:28,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 534 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked.
[2024-11-27 20:12:28,183 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 20:12:28,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560726297]
[2024-11-27 20:12:28,183 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560726297] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 20:12:28,183 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 20:12:28,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-27 20:12:28,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781751161]
[2024-11-27 20:12:28,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 20:12:28,190 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-27 20:12:28,190 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 20:12:28,196 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-27 20:12:28,197 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-27 20:12:28,199 INFO  L87              Difference]: Start difference. First operand 9489 states and 14227 transitions. Second operand  has 5 states, 5 states have (on average 845.0) internal successors, (4225), 5 states have internal predecessors, (4225), 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)
[2024-11-27 20:12:28,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-27 20:12:28,597 INFO  L93              Difference]: Finished difference Result 17690 states and 26523 transitions.
[2024-11-27 20:12:28,598 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-27 20:12:28,599 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 845.0) internal successors, (4225), 5 states have internal predecessors, (4225), 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 4752
[2024-11-27 20:12:28,612 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-27 20:12:28,635 INFO  L225             Difference]: With dead ends: 17690
[2024-11-27 20:12:28,636 INFO  L226             Difference]: Without dead ends: 9493
[2024-11-27 20:12:28,646 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-27 20:12:28,647 INFO  L435           NwaCegarLoop]: 12635 mSDtfsCounter, 0 mSDsluCounter, 37889 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50524 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-27 20:12:28,648 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50524 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-27 20:12:28,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9493 states.
[2024-11-27 20:12:28,975 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9493 to 9489.
[2024-11-27 20:12:28,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9489 states, 9488 states have (on average 1.4994730185497471) internal successors, (14227), 9488 states have internal predecessors, (14227), 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)
[2024-11-27 20:12:29,026 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 14227 transitions.
[2024-11-27 20:12:29,026 INFO  L78                 Accepts]: Start accepts. Automaton has 9489 states and 14227 transitions. Word has length 4752
[2024-11-27 20:12:29,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-27 20:12:29,037 INFO  L471      AbstractCegarLoop]: Abstraction has 9489 states and 14227 transitions.
[2024-11-27 20:12:29,038 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 845.0) internal successors, (4225), 5 states have internal predecessors, (4225), 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)
[2024-11-27 20:12:29,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 9489 states and 14227 transitions.
[2024-11-27 20:12:29,215 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4754
[2024-11-27 20:12:29,216 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:12:29,219 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-27 20:12:29,219 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-27 20:12:29,219 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:12:29,222 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:12:29,225 INFO  L85        PathProgramCache]: Analyzing trace with hash 348051703, now seen corresponding path program 1 times
[2024-11-27 20:12:29,225 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:12:29,225 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219489116]
[2024-11-27 20:12:29,227 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:12:29,227 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-27 20:12:50,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-27 20:13:05,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 534 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-27 20:13:05,113 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-27 20:13:05,113 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219489116]
[2024-11-27 20:13:05,114 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219489116] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-27 20:13:05,114 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-27 20:13:05,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-27 20:13:05,115 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357227281]
[2024-11-27 20:13:05,115 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-27 20:13:05,317 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-27 20:13:05,317 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-27 20:13:05,324 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-27 20:13:05,325 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-27 20:13:05,326 INFO  L87              Difference]: Start difference. First operand 9489 states and 14227 transitions. Second operand  has 4 states, 4 states have (on average 1188.25) internal successors, (4753), 4 states have internal predecessors, (4753), 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)
[2024-11-27 20:13:10,232 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-27 20:13:10,233 INFO  L93              Difference]: Finished difference Result 24853 states and 37264 transitions.
[2024-11-27 20:13:10,234 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-27 20:13:10,235 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1188.25) internal successors, (4753), 4 states have internal predecessors, (4753), 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 4753
[2024-11-27 20:13:10,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-27 20:13:10,264 INFO  L225             Difference]: With dead ends: 24853
[2024-11-27 20:13:10,265 INFO  L226             Difference]: Without dead ends: 9489
[2024-11-27 20:13:10,280 INFO  L434           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
[2024-11-27 20:13:10,282 INFO  L435           NwaCegarLoop]: 13613 mSDtfsCounter, 6404 mSDsluCounter, 23378 mSDsCounter, 0 mSdLazyCounter, 3907 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6404 SdHoareTripleChecker+Valid, 36991 SdHoareTripleChecker+Invalid, 4421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 3907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2024-11-27 20:13:10,282 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [6404 Valid, 36991 Invalid, 4421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [514 Valid, 3907 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2024-11-27 20:13:10,296 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9489 states.
[2024-11-27 20:13:10,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 9489.
[2024-11-27 20:13:10,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9489 states, 9488 states have (on average 1.4993676222596966) internal successors, (14226), 9488 states have internal predecessors, (14226), 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)
[2024-11-27 20:13:10,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 14226 transitions.
[2024-11-27 20:13:10,463 INFO  L78                 Accepts]: Start accepts. Automaton has 9489 states and 14226 transitions. Word has length 4753
[2024-11-27 20:13:10,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-27 20:13:10,465 INFO  L471      AbstractCegarLoop]: Abstraction has 9489 states and 14226 transitions.
[2024-11-27 20:13:10,467 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1188.25) internal successors, (4753), 4 states have internal predecessors, (4753), 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)
[2024-11-27 20:13:10,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 9489 states and 14226 transitions.
[2024-11-27 20:13:10,734 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4755
[2024-11-27 20:13:10,734 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-27 20:13:10,737 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2024-11-27 20:13:10,737 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-27 20:13:10,738 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-27 20:13:10,740 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-27 20:13:10,742 INFO  L85        PathProgramCache]: Analyzing trace with hash 2037189781, now seen corresponding path program 1 times
[2024-11-27 20:13:10,742 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-27 20:13:10,742 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334881135]
[2024-11-27 20:13:10,744 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-27 20:13:10,745 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms