./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --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_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/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_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/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_fbd51289-8241-4e92-92a5-d3016b7e0d42/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 2279e66d659d6de4a6f1e9cba0e3ed135a3304882c70e550497f0feeaae371b4
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-23 18:22:15,065 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-23 18:22:15,187 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-23 18:22:15,195 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-23 18:22:15,196 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-23 18:22:15,234 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-23 18:22:15,236 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-23 18:22:15,236 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-23 18:22:15,237 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-23 18:22:15,237 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-23 18:22:15,237 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-23 18:22:15,238 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-23 18:22:15,239 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-23 18:22:15,239 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-23 18:22:15,239 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-23 18:22:15,240 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-23 18:22:15,240 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-23 18:22:15,240 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-23 18:22:15,241 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-23 18:22:15,242 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-23 18:22:15,242 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 18:22:15,242 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 18:22:15,242 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 18:22:15,242 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:22:15,242 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-23 18:22:15,243 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-23 18:22:15,243 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-23 18:22:15,244 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-23 18:22:15,244 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:22:15,244 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-23 18:22:15,244 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-23 18:22:15,244 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-23 18:22:15,244 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-23 18:22:15,245 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-23 18:22:15,245 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/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 -> 2279e66d659d6de4a6f1e9cba0e3ed135a3304882c70e550497f0feeaae371b4
[2024-11-23 18:22:15,600 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-23 18:22:15,610 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-23 18:22:15,613 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-23 18:22:15,615 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-23 18:22:15,615 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-23 18:22:15,617 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i
[2024-11-23 18:22:18,996 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d/FLAG4ed55ed67
[2024-11-23 18:22:19,734 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-23 18:22:19,735 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i
[2024-11-23 18:22:19,802 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d/FLAG4ed55ed67
[2024-11-23 18:22:19,831 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/data/a4d713b55/0c28a2a68d644a6bb424431344b6ee4d
[2024-11-23 18:22:19,835 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-23 18:22:19,837 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-23 18:22:19,839 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-23 18:22:19,839 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-23 18:22:19,845 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-23 18:22:19,846 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:22:19" (1/1) ...
[2024-11-23 18:22:19,849 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e2f61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:19, skipping insertion in model container
[2024-11-23 18:22:19,849 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:22:19" (1/1) ...
[2024-11-23 18:22:20,005 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-23 18:22:20,325 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506]
[2024-11-23 18:22:20,334 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566]
[2024-11-23 18:22:21,521 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,522 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,523 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,524 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,525 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,543 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,544 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,547 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,548 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,551 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,552 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,553 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:21,553 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,395 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,405 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,546 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 18:22:22,585 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-23 18:22:22,607 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506]
[2024-11-23 18:22:22,608 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_fbd51289-8241-4e92-92a5-d3016b7e0d42/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566]
[2024-11-23 18:22:22,760 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,761 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,761 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,762 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,763 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,771 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,772 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,773 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,774 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,775 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,776 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,776 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,777 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,894 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,908 WARN  L1675              CHandler]: Possible shadowing of function index
[2024-11-23 18:22:22,916 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__(""
                         :




                         : "r"(pBuf)




                         : "memory"); [7769-7780]
[2024-11-23 18:22:22,937 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-23 18:22:23,137 INFO  L204         MainTranslator]: Completed translation
[2024-11-23 18:22:23,137 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23 WrapperNode
[2024-11-23 18:22:23,138 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-23 18:22:23,139 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-23 18:22:23,139 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-23 18:22:23,139 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-23 18:22:23,147 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,274 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,361 INFO  L138                Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656
[2024-11-23 18:22:23,362 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-23 18:22:23,363 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-23 18:22:23,363 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-23 18:22:23,363 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-23 18:22:23,374 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,375 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,409 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,524 INFO  L175           MemorySlicer]: Split 313 memory accesses to 6 slices as follows [238, 2, 9, 55, 6, 3]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 5, 10, 0, 1]. The 239 writes are split as follows [232, 0, 1, 3, 2, 1].
[2024-11-23 18:22:23,525 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,525 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,585 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,587 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,599 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,615 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,622 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,646 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-23 18:22:23,647 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-23 18:22:23,651 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-23 18:22:23,651 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-23 18:22:23,653 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (1/1) ...
[2024-11-23 18:22:23,663 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-23 18:22:23,688 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:22:23,706 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-23 18:22:23,712 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-23 18:22:23,749 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-23 18:22:23,749 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded
[2024-11-23 18:22:23,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded
[2024-11-23 18:22:23,750 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid
[2024-11-23 18:22:23,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid
[2024-11-23 18:22:23,750 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_bool
[2024-11-23 18:22:23,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_bool
[2024-11-23 18:22:23,750 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#0
[2024-11-23 18:22:23,751 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#1
[2024-11-23 18:22:23,751 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#2
[2024-11-23 18:22:23,751 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#3
[2024-11-23 18:22:23,751 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#4
[2024-11-23 18:22:23,753 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int#5
[2024-11-23 18:22:23,753 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-23 18:22:23,753 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-23 18:22:23,753 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_raise_error
[2024-11-23 18:22:23,754 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_raise_error
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-11-23 18:22:23,754 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#0
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#1
[2024-11-23 18:22:23,754 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#2
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#3
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#4
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$#5
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure memcpy_impl
[2024-11-23 18:22:23,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure memcpy_impl
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-23 18:22:23,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure bounded_malloc
[2024-11-23 18:22:23,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure bounded_malloc
[2024-11-23 18:22:23,755 INFO  L130     BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches
[2024-11-23 18:22:23,756 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches
[2024-11-23 18:22:23,756 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_size_t
[2024-11-23 18:22:23,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_size_t
[2024-11-23 18:22:23,758 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_mul_size_checked
[2024-11-23 18:22:23,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure can_fail_malloc
[2024-11-23 18:22:23,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure can_fail_malloc
[2024-11-23 18:22:23,759 INFO  L130     BoogieDeclarations]: Found specification of procedure aws_array_list_length
[2024-11-23 18:22:23,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure aws_array_list_length
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-23 18:22:23,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure my_memcpy
[2024-11-23 18:22:23,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure my_memcpy
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#0
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#1
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#2
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#3
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#4
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$#5
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1
[2024-11-23 18:22:23,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure can_fail_allocator
[2024-11-23 18:22:23,761 INFO  L138     BoogieDeclarations]: Found implementation of procedure can_fail_allocator
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult
[2024-11-23 18:22:23,761 INFO  L138     BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-23 18:22:23,761 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2024-11-23 18:22:23,765 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2024-11-23 18:22:23,765 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member
[2024-11-23 18:22:23,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2024-11-23 18:22:23,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2024-11-23 18:22:24,165 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-23 18:22:24,169 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-23 18:22:31,312 INFO  L?                        ?]: Removed 126 outVars from TransFormulas that were not future-live.
[2024-11-23 18:22:31,313 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-23 18:22:31,336 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-23 18:22:31,338 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-23 18:22:31,338 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:22:31 BoogieIcfgContainer
[2024-11-23 18:22:31,339 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-23 18:22:31,342 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-23 18:22:31,342 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-23 18:22:31,348 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-23 18:22:31,349 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:22:19" (1/3) ...
[2024-11-23 18:22:31,349 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb8c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:22:31, skipping insertion in model container
[2024-11-23 18:22:31,350 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:22:23" (2/3) ...
[2024-11-23 18:22:31,350 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdb8c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:22:31, skipping insertion in model container
[2024-11-23 18:22:31,350 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:22:31" (3/3) ...
[2024-11-23 18:22:31,353 INFO  L128   eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i
[2024-11-23 18:22:31,372 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-23 18:22:31,374 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_back_harness.i that has 18 procedures, 186 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-23 18:22:31,461 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-23 18:22:31,478 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;@a1e06c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-23 18:22:31,481 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-23 18:22:31,486 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55)
[2024-11-23 18:22:31,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-11-23 18:22:31,506 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:22:31,507 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:22:31,508 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:22:31,515 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:22:31,517 INFO  L85        PathProgramCache]: Analyzing trace with hash -357183169, now seen corresponding path program 1 times
[2024-11-23 18:22:31,526 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:22:31,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996173162]
[2024-11-23 18:22:31,527 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:22:31,529 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:22:39,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:22:40,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2024-11-23 18:22:40,408 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:22:40,408 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996173162]
[2024-11-23 18:22:40,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996173162] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 18:22:40,409 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840077518]
[2024-11-23 18:22:40,409 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:22:40,411 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:22:40,411 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:22:40,414 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 18:22:40,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-23 18:22:48,596 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:22:48,618 INFO  L256         TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-23 18:22:48,630 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 18:22:48,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2024-11-23 18:22:48,656 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 18:22:48,656 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840077518] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:22:48,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 18:22:48,657 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-23 18:22:48,659 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765838737]
[2024-11-23 18:22:48,663 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:22:48,668 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-23 18:22:48,668 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:22:48,701 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-23 18:22:48,702 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 18:22:48,705 INFO  L87              Difference]: Start difference. First operand  has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)
[2024-11-23 18:22:48,788 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:22:48,789 INFO  L93              Difference]: Finished difference Result 365 states and 518 transitions.
[2024-11-23 18:22:48,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-23 18:22:48,791 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129
[2024-11-23 18:22:48,792 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:22:48,802 INFO  L225             Difference]: With dead ends: 365
[2024-11-23 18:22:48,802 INFO  L226             Difference]: Without dead ends: 177
[2024-11-23 18:22:48,807 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-23 18:22:48,813 INFO  L435           NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-23 18:22:48,813 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-23 18:22:48,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2024-11-23 18:22:48,884 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177.
[2024-11-23 18:22:48,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 105 states have (on average 1.161904761904762) internal successors, (122), 106 states have internal predecessors, (122), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53)
[2024-11-23 18:22:48,897 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions.
[2024-11-23 18:22:48,902 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 129
[2024-11-23 18:22:48,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:22:48,904 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 230 transitions.
[2024-11-23 18:22:48,905 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21)
[2024-11-23 18:22:48,905 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions.
[2024-11-23 18:22:48,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-11-23 18:22:48,915 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:22:48,915 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:22:48,936 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-23 18:22:49,116 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-23 18:22:49,117 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:22:49,117 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:22:49,117 INFO  L85        PathProgramCache]: Analyzing trace with hash -298153149, now seen corresponding path program 1 times
[2024-11-23 18:22:49,117 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:22:49,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304793711]
[2024-11-23 18:22:49,118 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:22:49,118 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:22:55,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:22:57,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked.
[2024-11-23 18:22:57,527 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:22:57,528 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304793711]
[2024-11-23 18:22:57,528 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304793711] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 18:22:57,528 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132395277]
[2024-11-23 18:22:57,528 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:22:57,528 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:22:57,528 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:22:57,532 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 18:22:57,536 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-23 18:23:04,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:23:04,969 INFO  L256         TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-23 18:23:04,980 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 18:23:05,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked.
[2024-11-23 18:23:05,521 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 18:23:05,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [132395277] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:23:05,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 18:23:05,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9
[2024-11-23 18:23:05,522 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303361883]
[2024-11-23 18:23:05,522 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:23:05,523 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-23 18:23:05,523 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:23:05,524 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-23 18:23:05,524 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2024-11-23 18:23:05,525 INFO  L87              Difference]: Start difference. First operand 177 states and 230 transitions. Second operand  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21)
[2024-11-23 18:23:07,421 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:23:07,421 INFO  L93              Difference]: Finished difference Result 327 states and 431 transitions.
[2024-11-23 18:23:07,422 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-23 18:23:07,422 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129
[2024-11-23 18:23:07,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:23:07,427 INFO  L225             Difference]: With dead ends: 327
[2024-11-23 18:23:07,428 INFO  L226             Difference]: Without dead ends: 179
[2024-11-23 18:23:07,430 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2024-11-23 18:23:07,431 INFO  L435           NwaCegarLoop]: 178 mSDtfsCounter, 242 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-23 18:23:07,431 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 658 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-23 18:23:07,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2024-11-23 18:23:07,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179.
[2024-11-23 18:23:07,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58)
[2024-11-23 18:23:07,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 236 transitions.
[2024-11-23 18:23:07,464 INFO  L78                 Accepts]: Start accepts. Automaton has 179 states and 236 transitions. Word has length 129
[2024-11-23 18:23:07,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:23:07,465 INFO  L471      AbstractCegarLoop]: Abstraction has 179 states and 236 transitions.
[2024-11-23 18:23:07,465 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21)
[2024-11-23 18:23:07,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 179 states and 236 transitions.
[2024-11-23 18:23:07,469 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2024-11-23 18:23:07,469 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:23:07,470 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 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]
[2024-11-23 18:23:07,492 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-23 18:23:07,670 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:23:07,671 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:23:07,671 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:23:07,672 INFO  L85        PathProgramCache]: Analyzing trace with hash -1469361281, now seen corresponding path program 1 times
[2024-11-23 18:23:07,672 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:23:07,672 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136286560]
[2024-11-23 18:23:07,672 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:23:07,672 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:23:13,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:23:15,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked.
[2024-11-23 18:23:15,812 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:23:15,813 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136286560]
[2024-11-23 18:23:15,813 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136286560] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 18:23:15,813 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141087550]
[2024-11-23 18:23:15,813 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:23:15,813 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:23:15,813 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:23:15,820 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 18:23:15,822 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-23 18:23:22,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:23:22,960 INFO  L256         TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-23 18:23:22,970 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 18:23:23,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked.
[2024-11-23 18:23:23,891 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 18:23:23,891 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141087550] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:23:23,891 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 18:23:23,892 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11
[2024-11-23 18:23:23,892 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817298355]
[2024-11-23 18:23:23,892 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:23:23,893 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 18:23:23,893 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:23:23,894 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 18:23:23,894 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2024-11-23 18:23:23,894 INFO  L87              Difference]: Start difference. First operand 179 states and 236 transitions. Second operand  has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:26,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:23:26,171 INFO  L93              Difference]: Finished difference Result 289 states and 381 transitions.
[2024-11-23 18:23:26,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-23 18:23:26,172 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 159
[2024-11-23 18:23:26,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:23:26,176 INFO  L225             Difference]: With dead ends: 289
[2024-11-23 18:23:26,176 INFO  L226             Difference]: Without dead ends: 179
[2024-11-23 18:23:26,179 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2024-11-23 18:23:26,181 INFO  L435           NwaCegarLoop]: 175 mSDtfsCounter, 245 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time
[2024-11-23 18:23:26,183 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 815 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time]
[2024-11-23 18:23:26,184 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2024-11-23 18:23:26,204 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179.
[2024-11-23 18:23:26,209 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55)
[2024-11-23 18:23:26,211 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions.
[2024-11-23 18:23:26,214 INFO  L78                 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 159
[2024-11-23 18:23:26,215 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:23:26,215 INFO  L471      AbstractCegarLoop]: Abstraction has 179 states and 233 transitions.
[2024-11-23 18:23:26,216 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:26,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions.
[2024-11-23 18:23:26,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 175
[2024-11-23 18:23:26,221 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:23:26,222 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2024-11-23 18:23:26,238 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-23 18:23:26,422 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:23:26,423 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:23:26,423 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:23:26,423 INFO  L85        PathProgramCache]: Analyzing trace with hash 1115773871, now seen corresponding path program 2 times
[2024-11-23 18:23:26,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:23:26,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693706580]
[2024-11-23 18:23:26,424 INFO  L95    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-23 18:23:26,424 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:23:33,076 INFO  L229   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-23 18:23:33,076 INFO  L230   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-23 18:23:35,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 265 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked.
[2024-11-23 18:23:35,264 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:23:35,264 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693706580]
[2024-11-23 18:23:35,264 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693706580] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:23:35,264 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:23:35,264 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 18:23:35,264 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18679859]
[2024-11-23 18:23:35,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:23:35,265 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 18:23:35,265 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:23:35,266 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 18:23:35,266 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-23 18:23:35,266 INFO  L87              Difference]: Start difference. First operand 179 states and 233 transitions. Second operand  has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:37,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:23:37,036 INFO  L93              Difference]: Finished difference Result 283 states and 368 transitions.
[2024-11-23 18:23:37,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-23 18:23:37,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 174
[2024-11-23 18:23:37,038 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:23:37,044 INFO  L225             Difference]: With dead ends: 283
[2024-11-23 18:23:37,045 INFO  L226             Difference]: Without dead ends: 177
[2024-11-23 18:23:37,046 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2024-11-23 18:23:37,047 INFO  L435           NwaCegarLoop]: 208 mSDtfsCounter, 57 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2024-11-23 18:23:37,047 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1333 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2024-11-23 18:23:37,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2024-11-23 18:23:37,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177.
[2024-11-23 18:23:37,078 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 106 states have internal predecessors, (121), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53)
[2024-11-23 18:23:37,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 229 transitions.
[2024-11-23 18:23:37,085 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 229 transitions. Word has length 174
[2024-11-23 18:23:37,086 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:23:37,086 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 229 transitions.
[2024-11-23 18:23:37,086 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:37,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 229 transitions.
[2024-11-23 18:23:37,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2024-11-23 18:23:37,090 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:23:37,090 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:23:37,090 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-23 18:23:37,091 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:23:37,091 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:23:37,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 1453894743, now seen corresponding path program 1 times
[2024-11-23 18:23:37,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:23:37,092 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169243774]
[2024-11-23 18:23:37,092 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:23:37,092 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:23:43,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:23:46,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2024-11-23 18:23:46,048 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:23:46,048 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169243774]
[2024-11-23 18:23:46,048 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169243774] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:23:46,048 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:23:46,048 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-23 18:23:46,049 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884342296]
[2024-11-23 18:23:46,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:23:46,050 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-23 18:23:46,050 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:23:46,051 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-23 18:23:46,051 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-23 18:23:46,051 INFO  L87              Difference]: Start difference. First operand 177 states and 229 transitions. Second operand  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23)
[2024-11-23 18:23:46,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:23:46,434 INFO  L93              Difference]: Finished difference Result 306 states and 399 transitions.
[2024-11-23 18:23:46,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-23 18:23:46,435 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 204
[2024-11-23 18:23:46,436 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:23:46,439 INFO  L225             Difference]: With dead ends: 306
[2024-11-23 18:23:46,439 INFO  L226             Difference]: Without dead ends: 195
[2024-11-23 18:23:46,441 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-23 18:23:46,442 INFO  L435           NwaCegarLoop]: 224 mSDtfsCounter, 6 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-23 18:23:46,442 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1338 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-23 18:23:46,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2024-11-23 18:23:46,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191.
[2024-11-23 18:23:46,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 191 states, 114 states have (on average 1.1491228070175439) internal successors, (131), 115 states have internal predecessors, (131), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58)
[2024-11-23 18:23:46,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 248 transitions.
[2024-11-23 18:23:46,486 INFO  L78                 Accepts]: Start accepts. Automaton has 191 states and 248 transitions. Word has length 204
[2024-11-23 18:23:46,488 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:23:46,488 INFO  L471      AbstractCegarLoop]: Abstraction has 191 states and 248 transitions.
[2024-11-23 18:23:46,488 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23)
[2024-11-23 18:23:46,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 191 states and 248 transitions.
[2024-11-23 18:23:46,495 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2024-11-23 18:23:46,496 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:23:46,496 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:23:46,496 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-23 18:23:46,496 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:23:46,497 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:23:46,497 INFO  L85        PathProgramCache]: Analyzing trace with hash -1810031655, now seen corresponding path program 1 times
[2024-11-23 18:23:46,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:23:46,498 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124536981]
[2024-11-23 18:23:46,498 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:23:46,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:23:52,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:23:55,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked.
[2024-11-23 18:23:55,811 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:23:55,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124536981]
[2024-11-23 18:23:55,811 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124536981] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:23:55,811 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-23 18:23:55,811 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2024-11-23 18:23:55,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41094081]
[2024-11-23 18:23:55,812 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:23:55,812 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-23 18:23:55,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:23:55,813 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-23 18:23:55,813 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-23 18:23:55,813 INFO  L87              Difference]: Start difference. First operand 191 states and 248 transitions. Second operand  has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:56,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:23:56,361 INFO  L93              Difference]: Finished difference Result 321 states and 422 transitions.
[2024-11-23 18:23:56,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-23 18:23:56,361 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 204
[2024-11-23 18:23:56,362 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:23:56,364 INFO  L225             Difference]: With dead ends: 321
[2024-11-23 18:23:56,364 INFO  L226             Difference]: Without dead ends: 216
[2024-11-23 18:23:56,365 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2024-11-23 18:23:56,368 INFO  L435           NwaCegarLoop]: 232 mSDtfsCounter, 14 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-23 18:23:56,368 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1609 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-23 18:23:56,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 216 states.
[2024-11-23 18:23:56,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 197.
[2024-11-23 18:23:56,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 197 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 118 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 17 states have return successors, (61), 61 states have call predecessors, (61), 60 states have call successors, (61)
[2024-11-23 18:23:56,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 257 transitions.
[2024-11-23 18:23:56,401 INFO  L78                 Accepts]: Start accepts. Automaton has 197 states and 257 transitions. Word has length 204
[2024-11-23 18:23:56,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:23:56,401 INFO  L471      AbstractCegarLoop]: Abstraction has 197 states and 257 transitions.
[2024-11-23 18:23:56,402 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23)
[2024-11-23 18:23:56,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 197 states and 257 transitions.
[2024-11-23 18:23:56,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2024-11-23 18:23:56,408 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:23:56,408 INFO  L218           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:23:56,409 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-23 18:23:56,409 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:23:56,409 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:23:56,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 1752968215, now seen corresponding path program 1 times
[2024-11-23 18:23:56,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:23:56,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334589201]
[2024-11-23 18:23:56,410 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:23:56,410 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:24:04,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:24:07,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 370 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked.
[2024-11-23 18:24:07,292 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-23 18:24:07,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334589201]
[2024-11-23 18:24:07,292 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334589201] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-23 18:24:07,292 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169958574]
[2024-11-23 18:24:07,292 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:24:07,293 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:24:07,293 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:24:07,295 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 18:24:07,300 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-23 18:24:16,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-23 18:24:16,259 INFO  L256         TraceCheckSpWp]: Trace formula consists of 4891 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-23 18:24:16,268 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-23 18:24:16,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 370 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked.
[2024-11-23 18:24:16,528 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-23 18:24:16,528 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [169958574] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-23 18:24:16,529 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-23 18:24:16,529 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2024-11-23 18:24:16,529 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427035142]
[2024-11-23 18:24:16,529 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-23 18:24:16,530 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-23 18:24:16,530 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-23 18:24:16,531 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-23 18:24:16,531 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-23 18:24:16,531 INFO  L87              Difference]: Start difference. First operand 197 states and 257 transitions. Second operand  has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25)
[2024-11-23 18:24:17,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-23 18:24:17,530 INFO  L93              Difference]: Finished difference Result 302 states and 391 transitions.
[2024-11-23 18:24:17,531 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-23 18:24:17,531 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 204
[2024-11-23 18:24:17,532 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-23 18:24:17,534 INFO  L225             Difference]: With dead ends: 302
[2024-11-23 18:24:17,534 INFO  L226             Difference]: Without dead ends: 177
[2024-11-23 18:24:17,535 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-23 18:24:17,536 INFO  L435           NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-23 18:24:17,536 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-23 18:24:17,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 177 states.
[2024-11-23 18:24:17,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177.
[2024-11-23 18:24:17,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 106 states have internal predecessors, (119), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53)
[2024-11-23 18:24:17,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 227 transitions.
[2024-11-23 18:24:17,555 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 227 transitions. Word has length 204
[2024-11-23 18:24:17,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-23 18:24:17,555 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 227 transitions.
[2024-11-23 18:24:17,556 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25)
[2024-11-23 18:24:17,556 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 227 transitions.
[2024-11-23 18:24:17,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2024-11-23 18:24:17,559 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-23 18:24:17,560 INFO  L218           NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-23 18:24:17,596 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-23 18:24:17,760 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:24:17,761 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-23 18:24:17,761 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-23 18:24:17,761 INFO  L85        PathProgramCache]: Analyzing trace with hash 1660677069, now seen corresponding path program 1 times
[2024-11-23 18:24:17,761 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-23 18:24:17,761 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806532998]
[2024-11-23 18:24:17,761 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:24:17,761 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-23 18:24:29,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-11-23 18:24:29,756 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432381521]
[2024-11-23 18:24:29,756 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-23 18:24:29,756 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-23 18:24:29,756 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-23 18:24:29,760 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-23 18:24:29,762 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd51289-8241-4e92-92a5-d3016b7e0d42/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process