./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-065.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-065.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9789ed3fb7c723a015b476139983e23c0e32cb4759acdfba93a51a8c26be62c
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 02:06:50,171 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 02:06:50,247 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 02:06:50,258 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 02:06:50,258 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 02:06:50,289 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 02:06:50,289 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 02:06:50,289 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 02:06:50,290 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 02:06:50,290 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 02:06:50,290 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 02:06:50,290 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 02:06:50,290 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 02:06:50,290 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 02:06:50,291 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 02:06:50,291 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 02:06:50,292 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:06:50,292 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:06:50,293 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:06:50,293 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 02:06:50,293 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 02:06:50,294 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 02:06:50,294 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_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9789ed3fb7c723a015b476139983e23c0e32cb4759acdfba93a51a8c26be62c
[2024-11-28 02:06:50,633 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 02:06:50,644 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 02:06:50,647 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 02:06:50,649 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 02:06:50,649 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 02:06:50,652 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-065.c
[2024-11-28 02:06:53,589 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/data/de324caf8/6ca43459d0b44a8f891a87aeaa8ebd90/FLAG272fee0d2
[2024-11-28 02:06:54,014 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 02:06:54,015 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/sv-benchmarks/c/xcsp/Dubois-065.c
[2024-11-28 02:06:54,039 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/data/de324caf8/6ca43459d0b44a8f891a87aeaa8ebd90/FLAG272fee0d2
[2024-11-28 02:06:54,060 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/data/de324caf8/6ca43459d0b44a8f891a87aeaa8ebd90
[2024-11-28 02:06:54,063 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 02:06:54,065 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 02:06:54,067 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 02:06:54,068 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 02:06:54,073 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 02:06:54,074 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ...
[2024-11-28 02:06:54,075 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5640d170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container
[2024-11-28 02:06:54,075 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ...
[2024-11-28 02:06:54,134 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 02:06:54,667 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_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/sv-benchmarks/c/xcsp/Dubois-065.c[46320,46333]
[2024-11-28 02:06:54,704 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:06:54,715 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 02:06:54,983 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_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/sv-benchmarks/c/xcsp/Dubois-065.c[46320,46333]
[2024-11-28 02:06:55,003 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 02:06:55,022 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 02:06:55,023 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55 WrapperNode
[2024-11-28 02:06:55,025 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 02:06:55,026 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 02:06:55,027 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 02:06:55,027 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 02:06:55,037 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:55,143 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:55,821 INFO  L138                Inliner]: procedures = 13, calls = 527, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12951
[2024-11-28 02:06:55,821 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 02:06:55,822 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 02:06:55,822 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 02:06:55,822 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 02:06:55,834 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:55,835 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:55,957 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,127 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-28 02:06:56,127 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,128 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,376 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,396 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,483 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,538 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:56,779 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:57,056 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 02:06:57,058 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 02:06:57,058 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 02:06:57,058 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 02:06:57,059 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (1/1) ...
[2024-11-28 02:06:57,069 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 02:06:57,083 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:06:57,101 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 02:06:57,105 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 02:06:57,134 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 02:06:57,134 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 02:06:57,134 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 02:06:57,135 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 02:06:57,135 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2024-11-28 02:06:57,135 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2024-11-28 02:06:57,592 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 02:06:57,594 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 02:07:15,615 INFO  L?                        ?]: Removed 4490 outVars from TransFormulas that were not future-live.
[2024-11-28 02:07:15,615 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 02:07:15,735 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 02:07:15,735 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-28 02:07:15,735 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:15 BoogieIcfgContainer
[2024-11-28 02:07:15,736 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 02:07:15,741 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 02:07:15,741 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 02:07:15,747 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 02:07:15,748 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ...
[2024-11-28 02:07:15,748 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aca1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:15, skipping insertion in model container
[2024-11-28 02:07:15,748 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:55" (2/3) ...
[2024-11-28 02:07:15,749 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aca1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:15, skipping insertion in model container
[2024-11-28 02:07:15,749 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:15" (3/3) ...
[2024-11-28 02:07:15,750 INFO  L128   eAbstractionObserver]: Analyzing ICFG Dubois-065.c
[2024-11-28 02:07:15,771 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 02:07:15,774 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-065.c that has 2 procedures, 5146 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-11-28 02:07:16,027 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 02:07:16,045 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;@2254aeab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 02:07:16,045 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 02:07:16,071 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 5146 states, 4623 states have (on average 1.6190785204412719) internal successors, (7485), 4624 states have internal predecessors, (7485), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:07:16,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4359
[2024-11-28 02:07:16,462 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:07:16,465 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:07:16,466 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:07:16,475 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:16,477 INFO  L85        PathProgramCache]: Analyzing trace with hash 650817423, now seen corresponding path program 1 times
[2024-11-28 02:07:16,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:16,489 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452279656]
[2024-11-28 02:07:16,491 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:16,492 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:16,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:23,453 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 538722 trivial. 0 not checked.
[2024-11-28 02:07:23,454 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:23,454 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452279656]
[2024-11-28 02:07:23,455 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452279656] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:23,458 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080036317]
[2024-11-28 02:07:23,459 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:23,459 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:23,460 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:23,462 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:23,466 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 02:07:25,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:25,928 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9516 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:26,019 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:26,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 538722 trivial. 0 not checked.
[2024-11-28 02:07:26,486 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:07:26,487 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080036317] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:26,487 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:07:26,489 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-28 02:07:26,491 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946829780]
[2024-11-28 02:07:26,491 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:26,506 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-28 02:07:26,506 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:26,537 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-28 02:07:26,537 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 02:07:26,551 INFO  L87              Difference]: Start difference. First operand  has 5146 states, 4623 states have (on average 1.6190785204412719) internal successors, (7485), 4624 states have internal predecessors, (7485), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) Second operand  has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:07:26,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:07:26,940 INFO  L93              Difference]: Finished difference Result 10286 states and 17564 transitions.
[2024-11-28 02:07:26,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-28 02:07:26,944 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4358
[2024-11-28 02:07:26,945 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:07:27,001 INFO  L225             Difference]: With dead ends: 10286
[2024-11-28 02:07:27,002 INFO  L226             Difference]: Without dead ends: 5143
[2024-11-28 02:07:27,022 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4359 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 02:07:27,025 INFO  L435           NwaCegarLoop]: 8521 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, 8521 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
[2024-11-28 02:07:27,026 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:07:27,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5143 states.
[2024-11-28 02:07:27,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5143.
[2024-11-28 02:07:27,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5143 states, 4621 states have (on average 1.6189136550530188) internal successors, (7481), 4621 states have internal predecessors, (7481), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:07:27,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 8521 transitions.
[2024-11-28 02:07:27,649 INFO  L78                 Accepts]: Start accepts. Automaton has 5143 states and 8521 transitions. Word has length 4358
[2024-11-28 02:07:27,650 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:07:27,651 INFO  L471      AbstractCegarLoop]: Abstraction has 5143 states and 8521 transitions.
[2024-11-28 02:07:27,654 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:07:27,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 5143 states and 8521 transitions.
[2024-11-28 02:07:27,912 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4359
[2024-11-28 02:07:27,912 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:07:27,916 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:07:27,938 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-28 02:07:28,117 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:28,117 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:07:28,119 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:28,120 INFO  L85        PathProgramCache]: Analyzing trace with hash -469668593, now seen corresponding path program 1 times
[2024-11-28 02:07:28,121 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:28,121 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545974591]
[2024-11-28 02:07:28,122 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:28,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:28,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:39,773 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:07:39,773 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:39,774 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545974591]
[2024-11-28 02:07:39,774 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545974591] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:39,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302985339]
[2024-11-28 02:07:39,776 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:39,777 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:39,777 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:39,779 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:39,782 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 02:07:42,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:42,190 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9516 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:42,250 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:42,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 197601 proven. 0 refuted. 0 times theorem prover too weak. 342159 trivial. 0 not checked.
[2024-11-28 02:07:42,479 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:07:42,479 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302985339] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:42,479 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:07:42,480 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 02:07:42,480 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177071791]
[2024-11-28 02:07:42,481 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:42,486 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 02:07:42,486 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:42,489 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 02:07:42,489 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:07:42,491 INFO  L87              Difference]: Start difference. First operand 5143 states and 8521 transitions. Second operand  has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:07:46,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:07:46,399 INFO  L93              Difference]: Finished difference Result 9495 states and 15727 transitions.
[2024-11-28 02:07:46,400 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 02:07:46,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520) Word has length 4358
[2024-11-28 02:07:46,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:07:46,444 INFO  L225             Difference]: With dead ends: 9495
[2024-11-28 02:07:46,444 INFO  L226             Difference]: Without dead ends: 5145
[2024-11-28 02:07:46,453 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4363 GetRequests, 4357 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:07:46,454 INFO  L435           NwaCegarLoop]: 7997 mSDtfsCounter, 1 mSDsluCounter, 30935 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38932 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2024-11-28 02:07:46,455 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38932 Invalid, 3670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2024-11-28 02:07:46,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5145 states.
[2024-11-28 02:07:46,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 5145.
[2024-11-28 02:07:46,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5145 states, 4623 states have (on average 1.618645900930132) internal successors, (7483), 4623 states have internal predecessors, (7483), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:07:46,896 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8523 transitions.
[2024-11-28 02:07:46,900 INFO  L78                 Accepts]: Start accepts. Automaton has 5145 states and 8523 transitions. Word has length 4358
[2024-11-28 02:07:46,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:07:46,908 INFO  L471      AbstractCegarLoop]: Abstraction has 5145 states and 8523 transitions.
[2024-11-28 02:07:46,909 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:07:46,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 5145 states and 8523 transitions.
[2024-11-28 02:07:47,124 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4360
[2024-11-28 02:07:47,124 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:07:47,126 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:07:47,155 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-28 02:07:47,327 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:47,328 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:07:47,330 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:47,333 INFO  L85        PathProgramCache]: Analyzing trace with hash -1906132276, now seen corresponding path program 1 times
[2024-11-28 02:07:47,333 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:47,333 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326592637]
[2024-11-28 02:07:47,334 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:47,335 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:47,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:54,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:07:54,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:07:54,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326592637]
[2024-11-28 02:07:54,300 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326592637] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:07:54,300 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269473319]
[2024-11-28 02:07:54,302 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:54,302 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:54,302 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:07:54,304 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:07:54,308 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 02:07:56,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:07:56,760 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9519 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 02:07:56,832 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:07:57,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 197500 proven. 0 refuted. 0 times theorem prover too weak. 342260 trivial. 0 not checked.
[2024-11-28 02:07:57,108 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:07:57,109 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269473319] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:07:57,109 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:07:57,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 02:07:57,111 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282260519]
[2024-11-28 02:07:57,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:07:57,116 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 02:07:57,117 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:07:57,121 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 02:07:57,121 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:07:57,123 INFO  L87              Difference]: Start difference. First operand 5145 states and 8523 transitions. Second operand  has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:07:57,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:07:57,388 INFO  L93              Difference]: Finished difference Result 9515 states and 15757 transitions.
[2024-11-28 02:07:57,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 02:07:57,390 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4359
[2024-11-28 02:07:57,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:07:57,426 INFO  L225             Difference]: With dead ends: 9515
[2024-11-28 02:07:57,427 INFO  L226             Difference]: Without dead ends: 5154
[2024-11-28 02:07:57,435 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4364 GetRequests, 4358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:07:57,438 INFO  L435           NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:07:57,438 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:07:57,449 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5154 states.
[2024-11-28 02:07:57,960 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 5154.
[2024-11-28 02:07:57,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5154 states, 4632 states have (on average 1.618307426597582) internal successors, (7496), 4632 states have internal predecessors, (7496), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:07:57,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 8536 transitions.
[2024-11-28 02:07:57,985 INFO  L78                 Accepts]: Start accepts. Automaton has 5154 states and 8536 transitions. Word has length 4359
[2024-11-28 02:07:57,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:07:57,993 INFO  L471      AbstractCegarLoop]: Abstraction has 5154 states and 8536 transitions.
[2024-11-28 02:07:57,994 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:07:57,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 5154 states and 8536 transitions.
[2024-11-28 02:07:58,129 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4360
[2024-11-28 02:07:58,129 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:07:58,131 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:07:58,157 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-28 02:07:58,332 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:07:58,333 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:07:58,334 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:07:58,335 INFO  L85        PathProgramCache]: Analyzing trace with hash 2024112806, now seen corresponding path program 1 times
[2024-11-28 02:07:58,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:07:58,335 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660686277]
[2024-11-28 02:07:58,335 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:07:58,335 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:07:58,590 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:03,597 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:03,597 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:03,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660686277]
[2024-11-28 02:08:03,597 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660686277] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:03,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400899282]
[2024-11-28 02:08:03,598 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:03,598 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:03,599 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:03,600 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:03,602 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-28 02:08:05,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:05,534 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9519 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:05,588 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:05,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 197500 proven. 0 refuted. 0 times theorem prover too weak. 342260 trivial. 0 not checked.
[2024-11-28 02:08:05,748 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:08:05,748 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [400899282] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:08:05,748 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:08:05,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 02:08:05,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77020219]
[2024-11-28 02:08:05,750 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:08:05,757 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:08:05,757 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:05,760 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:08:05,760 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:05,762 INFO  L87              Difference]: Start difference. First operand 5154 states and 8536 transitions. Second operand  has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:05,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:08:05,891 INFO  L93              Difference]: Finished difference Result 9512 states and 15750 transitions.
[2024-11-28 02:08:05,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:08:05,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4359
[2024-11-28 02:08:05,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:08:05,922 INFO  L225             Difference]: With dead ends: 9512
[2024-11-28 02:08:05,922 INFO  L226             Difference]: Without dead ends: 5155
[2024-11-28 02:08:05,931 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4364 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:05,932 INFO  L435           NwaCegarLoop]: 8520 mSDtfsCounter, 0 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:08:05,932 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17031 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:08:05,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5155 states.
[2024-11-28 02:08:06,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 5155.
[2024-11-28 02:08:06,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5155 states, 4633 states have (on average 1.6179581264839198) internal successors, (7496), 4633 states have internal predecessors, (7496), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:08:06,313 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8536 transitions.
[2024-11-28 02:08:06,317 INFO  L78                 Accepts]: Start accepts. Automaton has 5155 states and 8536 transitions. Word has length 4359
[2024-11-28 02:08:06,323 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:08:06,323 INFO  L471      AbstractCegarLoop]: Abstraction has 5155 states and 8536 transitions.
[2024-11-28 02:08:06,324 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:06,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 5155 states and 8536 transitions.
[2024-11-28 02:08:06,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4361
[2024-11-28 02:08:06,555 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:08:06,557 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:08:06,588 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-28 02:08:06,758 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2024-11-28 02:08:06,758 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:08:06,760 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:06,762 INFO  L85        PathProgramCache]: Analyzing trace with hash -583771831, now seen corresponding path program 1 times
[2024-11-28 02:08:06,763 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:06,763 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14680882]
[2024-11-28 02:08:06,765 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:06,765 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:07,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:13,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:13,785 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:13,786 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14680882]
[2024-11-28 02:08:13,786 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14680882] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:13,786 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555751200]
[2024-11-28 02:08:13,787 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:13,787 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:13,787 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:13,789 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:13,791 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-28 02:08:15,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:15,813 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9522 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:15,855 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:16,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1557 proven. 0 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:16,071 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:08:16,072 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [555751200] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:08:16,072 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:08:16,073 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 02:08:16,073 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194446200]
[2024-11-28 02:08:16,073 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:08:16,078 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 02:08:16,078 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:16,081 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 02:08:16,081 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:08:16,083 INFO  L87              Difference]: Start difference. First operand 5155 states and 8536 transitions. Second operand  has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:20,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:08:20,122 INFO  L93              Difference]: Finished difference Result 5167 states and 8550 transitions.
[2024-11-28 02:08:20,122 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 02:08:20,123 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4360
[2024-11-28 02:08:20,133 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:08:20,157 INFO  L225             Difference]: With dead ends: 5167
[2024-11-28 02:08:20,157 INFO  L226             Difference]: Without dead ends: 5157
[2024-11-28 02:08:20,160 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4365 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:08:20,161 INFO  L435           NwaCegarLoop]: 7997 mSDtfsCounter, 1 mSDsluCounter, 30935 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38932 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time
[2024-11-28 02:08:20,162 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38932 Invalid, 3670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time]
[2024-11-28 02:08:20,171 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5157 states.
[2024-11-28 02:08:20,524 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 5157.
[2024-11-28 02:08:20,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5157 states, 4635 states have (on average 1.6176914778856526) internal successors, (7498), 4635 states have internal predecessors, (7498), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:08:20,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 8538 transitions.
[2024-11-28 02:08:20,554 INFO  L78                 Accepts]: Start accepts. Automaton has 5157 states and 8538 transitions. Word has length 4360
[2024-11-28 02:08:20,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:08:20,561 INFO  L471      AbstractCegarLoop]: Abstraction has 5157 states and 8538 transitions.
[2024-11-28 02:08:20,562 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:20,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 5157 states and 8538 transitions.
[2024-11-28 02:08:20,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4362
[2024-11-28 02:08:20,772 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:08:20,774 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:08:20,803 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-28 02:08:20,974 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:20,975 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:08:20,977 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:20,979 INFO  L85        PathProgramCache]: Analyzing trace with hash -1148394790, now seen corresponding path program 1 times
[2024-11-28 02:08:20,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:20,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674506075]
[2024-11-28 02:08:20,982 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:20,982 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:21,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:26,604 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:26,604 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:26,604 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674506075]
[2024-11-28 02:08:26,605 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674506075] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:26,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240659987]
[2024-11-28 02:08:26,606 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:26,606 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:26,606 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:26,608 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:26,612 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-28 02:08:28,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:28,895 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9525 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:28,926 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:29,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked.
[2024-11-28 02:08:29,088 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:08:29,088 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [240659987] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:08:29,088 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:08:29,089 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 02:08:29,090 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024025371]
[2024-11-28 02:08:29,090 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:08:29,094 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 02:08:29,095 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:29,098 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 02:08:29,098 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:08:29,100 INFO  L87              Difference]: Start difference. First operand 5157 states and 8538 transitions. Second operand  has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:29,326 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:08:29,326 INFO  L93              Difference]: Finished difference Result 5187 states and 8580 transitions.
[2024-11-28 02:08:29,327 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 02:08:29,328 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4361
[2024-11-28 02:08:29,335 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:08:29,367 INFO  L225             Difference]: With dead ends: 5187
[2024-11-28 02:08:29,368 INFO  L226             Difference]: Without dead ends: 5166
[2024-11-28 02:08:29,370 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4366 GetRequests, 4360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:08:29,371 INFO  L435           NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:08:29,373 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:08:29,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5166 states.
[2024-11-28 02:08:29,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5166.
[2024-11-28 02:08:29,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5166 states, 4644 states have (on average 1.6173557278208441) internal successors, (7511), 4644 states have internal predecessors, (7511), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:08:29,684 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 8551 transitions.
[2024-11-28 02:08:29,687 INFO  L78                 Accepts]: Start accepts. Automaton has 5166 states and 8551 transitions. Word has length 4361
[2024-11-28 02:08:29,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:08:29,696 INFO  L471      AbstractCegarLoop]: Abstraction has 5166 states and 8551 transitions.
[2024-11-28 02:08:29,697 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:29,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 5166 states and 8551 transitions.
[2024-11-28 02:08:29,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4362
[2024-11-28 02:08:29,917 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:08:29,919 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:08:29,946 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-28 02:08:30,120 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:30,120 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:08:30,122 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:30,123 INFO  L85        PathProgramCache]: Analyzing trace with hash 1716649396, now seen corresponding path program 1 times
[2024-11-28 02:08:30,123 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:30,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379262096]
[2024-11-28 02:08:30,124 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:30,125 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:30,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:35,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:35,684 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:35,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379262096]
[2024-11-28 02:08:35,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379262096] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:35,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254854222]
[2024-11-28 02:08:35,685 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:35,685 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:35,685 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:35,687 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:35,689 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-28 02:08:37,652 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:37,692 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9525 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:37,723 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:37,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked.
[2024-11-28 02:08:37,820 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:08:37,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [254854222] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:08:37,820 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:08:37,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 02:08:37,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354660525]
[2024-11-28 02:08:37,821 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:08:37,825 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:08:37,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:37,828 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:08:37,828 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:37,830 INFO  L87              Difference]: Start difference. First operand 5166 states and 8551 transitions. Second operand  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:37,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:08:37,931 INFO  L93              Difference]: Finished difference Result 5184 states and 8573 transitions.
[2024-11-28 02:08:37,931 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:08:37,932 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4361
[2024-11-28 02:08:37,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:08:37,958 INFO  L225             Difference]: With dead ends: 5184
[2024-11-28 02:08:37,959 INFO  L226             Difference]: Without dead ends: 5167
[2024-11-28 02:08:37,961 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4366 GetRequests, 4361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:37,962 INFO  L435           NwaCegarLoop]: 8520 mSDtfsCounter, 0 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:08:37,962 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17031 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:08:37,971 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5167 states.
[2024-11-28 02:08:38,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 5167.
[2024-11-28 02:08:38,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5167 states, 4645 states have (on average 1.6170075349838535) internal successors, (7511), 4645 states have internal predecessors, (7511), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520)
[2024-11-28 02:08:38,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8551 transitions.
[2024-11-28 02:08:38,343 INFO  L78                 Accepts]: Start accepts. Automaton has 5167 states and 8551 transitions. Word has length 4361
[2024-11-28 02:08:38,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:08:38,351 INFO  L471      AbstractCegarLoop]: Abstraction has 5167 states and 8551 transitions.
[2024-11-28 02:08:38,352 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:08:38,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 5167 states and 8551 transitions.
[2024-11-28 02:08:38,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4363
[2024-11-28 02:08:38,503 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:08:38,505 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:08:38,533 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-28 02:08:38,706 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:38,706 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:08:38,708 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:38,710 INFO  L85        PathProgramCache]: Analyzing trace with hash 248689411, now seen corresponding path program 1 times
[2024-11-28 02:08:38,710 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:38,710 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402412391]
[2024-11-28 02:08:38,711 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:38,711 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:39,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:45,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:08:45,763 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:08:45,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402412391]
[2024-11-28 02:08:45,763 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402412391] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:08:45,763 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446310058]
[2024-11-28 02:08:45,764 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:45,764 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:45,764 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:08:45,766 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:08:45,769 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-28 02:08:47,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:08:47,669 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 02:08:48,030 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:08:55,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked.
[2024-11-28 02:08:55,049 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:08:55,049 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446310058] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:08:55,049 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:08:55,050 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 02:08:55,051 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419662629]
[2024-11-28 02:08:55,051 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:08:55,054 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:08:55,054 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:08:55,057 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:08:55,057 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:55,058 INFO  L87              Difference]: Start difference. First operand 5167 states and 8551 transitions. Second operand  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:08:55,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:08:55,303 INFO  L93              Difference]: Finished difference Result 14262 states and 23603 transitions.
[2024-11-28 02:08:55,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:08:55,304 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520) Word has length 4362
[2024-11-28 02:08:55,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:08:55,336 INFO  L225             Difference]: With dead ends: 14262
[2024-11-28 02:08:55,336 INFO  L226             Difference]: Without dead ends: 9706
[2024-11-28 02:08:55,345 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 4362 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:08:55,346 INFO  L435           NwaCegarLoop]: 12521 mSDtfsCounter, 5707 mSDsluCounter, 8547 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5707 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 02:08:55,346 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [5707 Valid, 21068 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 02:08:55,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9706 states.
[2024-11-28 02:08:55,877 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 9706.
[2024-11-28 02:08:55,884 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9706 states, 9055 states have (on average 1.6310325786858089) internal successors, (14769), 9055 states have internal predecessors, (14769), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649)
[2024-11-28 02:08:55,904 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9706 states to 9706 states and 16067 transitions.
[2024-11-28 02:08:55,907 INFO  L78                 Accepts]: Start accepts. Automaton has 9706 states and 16067 transitions. Word has length 4362
[2024-11-28 02:08:55,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:08:55,912 INFO  L471      AbstractCegarLoop]: Abstraction has 9706 states and 16067 transitions.
[2024-11-28 02:08:55,913 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:08:55,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 9706 states and 16067 transitions.
[2024-11-28 02:08:56,055 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4363
[2024-11-28 02:08:56,055 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:08:56,057 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:08:56,082 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-28 02:08:56,257 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:08:56,257 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:08:56,258 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:08:56,260 INFO  L85        PathProgramCache]: Analyzing trace with hash 324884239, now seen corresponding path program 1 times
[2024-11-28 02:08:56,260 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:08:56,260 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144484892]
[2024-11-28 02:08:56,260 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:08:56,260 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:08:56,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:01,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:09:01,820 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:09:01,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144484892]
[2024-11-28 02:09:01,820 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144484892] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:09:01,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843671630]
[2024-11-28 02:09:01,821 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:01,821 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:01,821 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:09:01,823 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:09:01,824 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-28 02:09:04,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:04,133 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 02:09:04,191 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:09:04,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked.
[2024-11-28 02:09:04,355 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:09:04,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [843671630] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:09:04,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:09:04,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 02:09:04,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201125506]
[2024-11-28 02:09:04,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:09:04,359 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 02:09:04,360 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:09:04,362 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 02:09:04,362 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:09:04,363 INFO  L87              Difference]: Start difference. First operand 9706 states and 16067 transitions. Second operand  has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:09:04,579 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:09:04,579 INFO  L93              Difference]: Finished difference Result 9774 states and 16168 transitions.
[2024-11-28 02:09:04,579 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 02:09:04,581 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4362
[2024-11-28 02:09:04,589 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:09:04,621 INFO  L225             Difference]: With dead ends: 9774
[2024-11-28 02:09:04,622 INFO  L226             Difference]: Without dead ends: 9723
[2024-11-28 02:09:04,627 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 4361 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:09:04,628 INFO  L435           NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:09:04,629 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:09:04,644 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9723 states.
[2024-11-28 02:09:05,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 9723.
[2024-11-28 02:09:05,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9723 states, 9072 states have (on average 1.630731922398589) internal successors, (14794), 9072 states have internal predecessors, (14794), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649)
[2024-11-28 02:09:05,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16092 transitions.
[2024-11-28 02:09:05,395 INFO  L78                 Accepts]: Start accepts. Automaton has 9723 states and 16092 transitions. Word has length 4362
[2024-11-28 02:09:05,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:09:05,398 INFO  L471      AbstractCegarLoop]: Abstraction has 9723 states and 16092 transitions.
[2024-11-28 02:09:05,399 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:09:05,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 9723 states and 16092 transitions.
[2024-11-28 02:09:05,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4363
[2024-11-28 02:09:05,527 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:09:05,529 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:09:05,553 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-28 02:09:05,730 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:05,730 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:09:05,732 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:09:05,733 INFO  L85        PathProgramCache]: Analyzing trace with hash 1308980457, now seen corresponding path program 1 times
[2024-11-28 02:09:05,734 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:09:05,734 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834135580]
[2024-11-28 02:09:05,735 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:05,735 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:09:05,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:12,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:09:12,507 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:09:12,507 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834135580]
[2024-11-28 02:09:12,507 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834135580] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:09:12,507 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359290903]
[2024-11-28 02:09:12,508 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:12,508 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:12,508 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:09:12,510 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:09:12,511 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-28 02:09:14,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:14,458 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 02:09:14,487 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:09:14,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked.
[2024-11-28 02:09:14,579 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:09:14,579 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359290903] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:09:14,579 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:09:14,580 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 02:09:14,580 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412118230]
[2024-11-28 02:09:14,580 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:09:14,582 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 02:09:14,582 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:09:14,584 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 02:09:14,584 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:09:14,585 INFO  L87              Difference]: Start difference. First operand 9723 states and 16092 transitions. Second operand  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:09:14,774 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:09:14,774 INFO  L93              Difference]: Finished difference Result 9754 states and 16133 transitions.
[2024-11-28 02:09:14,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 02:09:14,775 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4362
[2024-11-28 02:09:14,780 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:09:14,804 INFO  L225             Difference]: With dead ends: 9754
[2024-11-28 02:09:14,804 INFO  L226             Difference]: Without dead ends: 9716
[2024-11-28 02:09:14,806 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 4362 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 02:09:14,808 INFO  L435           NwaCegarLoop]: 8520 mSDtfsCounter, 0 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 02:09:14,809 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17031 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 02:09:14,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9716 states.
[2024-11-28 02:09:15,198 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9716.
[2024-11-28 02:09:15,209 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9716 states, 9065 states have (on average 1.630446773303916) internal successors, (14780), 9065 states have internal predecessors, (14780), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649)
[2024-11-28 02:09:15,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9716 states to 9716 states and 16078 transitions.
[2024-11-28 02:09:15,236 INFO  L78                 Accepts]: Start accepts. Automaton has 9716 states and 16078 transitions. Word has length 4362
[2024-11-28 02:09:15,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:09:15,244 INFO  L471      AbstractCegarLoop]: Abstraction has 9716 states and 16078 transitions.
[2024-11-28 02:09:15,245 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520)
[2024-11-28 02:09:15,245 INFO  L276                IsEmpty]: Start isEmpty. Operand 9716 states and 16078 transitions.
[2024-11-28 02:09:15,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4364
[2024-11-28 02:09:15,361 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:09:15,363 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:09:15,381 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-28 02:09:15,564 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-28 02:09:15,564 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:09:15,565 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:09:15,566 INFO  L85        PathProgramCache]: Analyzing trace with hash -1486910182, now seen corresponding path program 1 times
[2024-11-28 02:09:15,566 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:09:15,566 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060812201]
[2024-11-28 02:09:15,568 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:15,568 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:09:15,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:21,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:09:21,235 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:09:21,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060812201]
[2024-11-28 02:09:21,236 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060812201] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:09:21,236 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907550729]
[2024-11-28 02:09:21,237 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:21,237 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:21,237 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:09:21,238 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:09:21,240 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-28 02:09:23,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:23,404 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9531 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 02:09:23,467 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 02:09:23,750 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 3630 proven. 0 refuted. 0 times theorem prover too weak. 536130 trivial. 0 not checked.
[2024-11-28 02:09:23,751 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 02:09:23,751 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907550729] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 02:09:23,751 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 02:09:23,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 02:09:23,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157910623]
[2024-11-28 02:09:23,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 02:09:23,759 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 02:09:23,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 02:09:23,763 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 02:09:23,764 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:09:23,765 INFO  L87              Difference]: Start difference. First operand 9716 states and 16078 transitions. Second operand  has 6 states, 5 states have (on average 354.4) internal successors, (1772), 6 states have internal predecessors, (1772), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:09:27,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 02:09:27,575 INFO  L93              Difference]: Finished difference Result 9812 states and 16220 transitions.
[2024-11-28 02:09:27,575 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 02:09:27,577 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 354.4) internal successors, (1772), 6 states have internal predecessors, (1772), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520) Word has length 4363
[2024-11-28 02:09:27,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 02:09:27,617 INFO  L225             Difference]: With dead ends: 9812
[2024-11-28 02:09:27,617 INFO  L226             Difference]: Without dead ends: 9720
[2024-11-28 02:09:27,623 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4368 GetRequests, 4362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 02:09:27,624 INFO  L435           NwaCegarLoop]: 7997 mSDtfsCounter, 1 mSDsluCounter, 30935 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38932 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2024-11-28 02:09:27,624 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38932 Invalid, 3670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2024-11-28 02:09:27,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9720 states.
[2024-11-28 02:09:28,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9720 to 9720.
[2024-11-28 02:09:28,439 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9720 states, 9069 states have (on average 1.6301687065828647) internal successors, (14784), 9069 states have internal predecessors, (14784), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649)
[2024-11-28 02:09:28,472 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 16082 transitions.
[2024-11-28 02:09:28,476 INFO  L78                 Accepts]: Start accepts. Automaton has 9720 states and 16082 transitions. Word has length 4363
[2024-11-28 02:09:28,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 02:09:28,483 INFO  L471      AbstractCegarLoop]: Abstraction has 9720 states and 16082 transitions.
[2024-11-28 02:09:28,484 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 354.4) internal successors, (1772), 6 states have internal predecessors, (1772), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520)
[2024-11-28 02:09:28,484 INFO  L276                IsEmpty]: Start isEmpty. Operand 9720 states and 16082 transitions.
[2024-11-28 02:09:28,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4365
[2024-11-28 02:09:28,788 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 02:09:28,790 INFO  L218           NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 02:09:28,818 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-11-28 02:09:28,991 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-11-28 02:09:28,991 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 02:09:28,994 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 02:09:28,996 INFO  L85        PathProgramCache]: Analyzing trace with hash 103751599, now seen corresponding path program 1 times
[2024-11-28 02:09:28,996 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 02:09:28,996 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485079191]
[2024-11-28 02:09:28,997 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:28,998 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 02:09:29,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:34,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked.
[2024-11-28 02:09:34,207 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 02:09:34,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485079191]
[2024-11-28 02:09:34,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485079191] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 02:09:34,207 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645972713]
[2024-11-28 02:09:34,208 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 02:09:34,208 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 02:09:34,208 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 02:09:34,210 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 02:09:34,213 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b87a7f2c-2c52-4bd3-a6f0-8bf5fc1e375a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-28 02:09:36,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 02:09:36,657 INFO  L256         TraceCheckSpWp]: Trace formula consists of 9534 conjuncts, 5 conjuncts are in the unsatisfiable core