./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-055.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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-055.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/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 1d2fd399b832d746c36cf0b99753cf8d706cd67154a90f8b18b753bb453a8ef3
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 03:06:56,942 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 03:06:57,047 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 03:06:57,059 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 03:06:57,059 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 03:06:57,111 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 03:06:57,112 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 03:06:57,112 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 03:06:57,113 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 03:06:57,114 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 03:06:57,115 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 03:06:57,115 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 03:06:57,116 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 03:06:57,116 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 03:06:57,116 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 03:06:57,116 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 03:06:57,116 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 03:06:57,116 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 03:06:57,117 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 03:06:57,118 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 03:06:57,118 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 03:06:57,118 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 03:06:57,119 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:06:57,119 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:06:57,119 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:06:57,120 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:06:57,120 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 03:06:57,120 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 03:06:57,121 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 03:06:57,121 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 03:06:57,121 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 03:06:57,121 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 03:06:57,122 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 03:06:57,122 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 03:06:57,122 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 03:06:57,122 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 03:06:57,122 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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/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 -> 1d2fd399b832d746c36cf0b99753cf8d706cd67154a90f8b18b753bb453a8ef3
[2024-11-28 03:06:57,551 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 03:06:57,562 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 03:06:57,565 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 03:06:57,567 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 03:06:57,567 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 03:06:57,569 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-055.c
[2024-11-28 03:07:01,068 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/data/a6c8e2ea2/d638155607184283a7c3fde091612a2c/FLAG50b3749e4
[2024-11-28 03:07:01,582 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 03:07:01,583 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/sv-benchmarks/c/xcsp/Dubois-055.c
[2024-11-28 03:07:01,606 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/data/a6c8e2ea2/d638155607184283a7c3fde091612a2c/FLAG50b3749e4
[2024-11-28 03:07:01,628 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/data/a6c8e2ea2/d638155607184283a7c3fde091612a2c
[2024-11-28 03:07:01,631 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 03:07:01,633 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 03:07:01,634 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 03:07:01,634 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 03:07:01,642 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 03:07:01,643 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:01" (1/1) ...
[2024-11-28 03:07:01,647 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8e8150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:01, skipping insertion in model container
[2024-11-28 03:07:01,647 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:01" (1/1) ...
[2024-11-28 03:07:01,714 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 03:07:02,384 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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/sv-benchmarks/c/xcsp/Dubois-055.c[39120,39133]
[2024-11-28 03:07:02,438 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:07:02,462 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 03:07:02,728 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_37369dbc-df14-4031-8bc7-2cb60a16e6ce/sv-benchmarks/c/xcsp/Dubois-055.c[39120,39133]
[2024-11-28 03:07:02,823 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:07:02,843 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 03:07:02,844 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02 WrapperNode
[2024-11-28 03:07:02,844 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 03:07:02,847 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 03:07:02,847 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 03:07:02,847 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 03:07:02,856 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:02,948 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:03,617 INFO  L138                Inliner]: procedures = 13, calls = 447, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10961
[2024-11-28 03:07:03,618 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 03:07:03,618 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 03:07:03,618 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 03:07:03,618 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 03:07:03,631 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:03,632 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:03,729 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:03,872 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 03:07:03,872 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:03,872 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,097 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,116 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,209 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,261 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,303 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,415 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 03:07:04,417 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 03:07:04,417 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 03:07:04,417 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 03:07:04,419 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (1/1) ...
[2024-11-28 03:07:04,429 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:07:04,447 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:07:04,459 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 03:07:04,462 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 03:07:04,484 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 03:07:04,484 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 03:07:04,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 03:07:04,484 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 03:07:04,485 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2024-11-28 03:07:04,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2024-11-28 03:07:05,008 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 03:07:05,010 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 03:07:21,790 INFO  L?                        ?]: Removed 3800 outVars from TransFormulas that were not future-live.
[2024-11-28 03:07:21,791 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 03:07:21,899 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 03:07:21,899 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-28 03:07:21,899 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:21 BoogieIcfgContainer
[2024-11-28 03:07:21,900 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 03:07:21,902 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 03:07:21,902 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 03:07:21,911 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 03:07:21,911 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:07:01" (1/3) ...
[2024-11-28 03:07:21,912 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2646b930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:21, skipping insertion in model container
[2024-11-28 03:07:21,912 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:02" (2/3) ...
[2024-11-28 03:07:21,913 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2646b930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:07:21, skipping insertion in model container
[2024-11-28 03:07:21,913 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:21" (3/3) ...
[2024-11-28 03:07:21,914 INFO  L128   eAbstractionObserver]: Analyzing ICFG Dubois-055.c
[2024-11-28 03:07:21,932 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 03:07:21,934 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-055.c that has 2 procedures, 4356 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-11-28 03:07:22,153 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 03:07:22,170 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;@452ca732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 03:07:22,170 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 03:07:22,194 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4356 states, 3913 states have (on average 1.6189624329159213) internal successors, (6335), 3914 states have internal predecessors, (6335), 440 states have call successors, (440), 1 states have call predecessors, (440), 1 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440)
[2024-11-28 03:07:22,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3689
[2024-11-28 03:07:22,417 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:07:22,420 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:07:22,421 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:07:22,428 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:07:22,430 INFO  L85        PathProgramCache]: Analyzing trace with hash 1013838746, now seen corresponding path program 1 times
[2024-11-28 03:07:22,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:07:22,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114003082]
[2024-11-28 03:07:22,441 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:22,442 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:07:23,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:34,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:07:34,337 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:07:34,340 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114003082]
[2024-11-28 03:07:34,340 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114003082] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:07:34,341 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717689341]
[2024-11-28 03:07:34,342 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:34,342 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:07:34,342 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:07:34,346 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:07:34,349 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 03:07:36,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:36,560 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8056 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:07:36,659 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:07:37,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:07:37,175 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:07:37,175 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717689341] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:07:37,175 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:07:37,176 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:07:37,178 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921944010]
[2024-11-28 03:07:37,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:07:37,193 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:07:37,195 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:07:37,224 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:07:37,225 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:07:37,238 INFO  L87              Difference]: Start difference. First operand  has 4356 states, 3913 states have (on average 1.6189624329159213) internal successors, (6335), 3914 states have internal predecessors, (6335), 440 states have call successors, (440), 1 states have call predecessors, (440), 1 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440) Second operand  has 6 states, 5 states have (on average 298.8) internal successors, (1494), 6 states have internal predecessors, (1494), 2 states have call successors, (440), 1 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:40,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:07:40,410 INFO  L93              Difference]: Finished difference Result 8709 states and 14871 transitions.
[2024-11-28 03:07:40,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:07:40,414 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 298.8) internal successors, (1494), 6 states have internal predecessors, (1494), 2 states have call successors, (440), 1 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3688
[2024-11-28 03:07:40,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:07:40,471 INFO  L225             Difference]: With dead ends: 8709
[2024-11-28 03:07:40,471 INFO  L226             Difference]: Without dead ends: 4355
[2024-11-28 03:07:40,491 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3693 GetRequests, 3687 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:07:40,495 INFO  L435           NwaCegarLoop]: 6767 mSDtfsCounter, 1 mSDsluCounter, 26175 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32942 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2024-11-28 03:07:40,497 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32942 Invalid, 3110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2024-11-28 03:07:40,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4355 states.
[2024-11-28 03:07:40,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4355.
[2024-11-28 03:07:40,924 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4355 states, 3913 states have (on average 1.6184513161257348) internal successors, (6333), 3913 states have internal predecessors, (6333), 440 states have call successors, (440), 1 states have call predecessors, (440), 1 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440)
[2024-11-28 03:07:40,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 7213 transitions.
[2024-11-28 03:07:40,956 INFO  L78                 Accepts]: Start accepts. Automaton has 4355 states and 7213 transitions. Word has length 3688
[2024-11-28 03:07:40,969 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:07:40,969 INFO  L471      AbstractCegarLoop]: Abstraction has 4355 states and 7213 transitions.
[2024-11-28 03:07:40,971 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 298.8) internal successors, (1494), 6 states have internal predecessors, (1494), 2 states have call successors, (440), 1 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:40,971 INFO  L276                IsEmpty]: Start isEmpty. Operand 4355 states and 7213 transitions.
[2024-11-28 03:07:41,134 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3690
[2024-11-28 03:07:41,134 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:07:41,136 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:07:41,150 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-28 03:07:41,336 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-28 03:07:41,336 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:07:41,338 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:07:41,340 INFO  L85        PathProgramCache]: Analyzing trace with hash -882309071, now seen corresponding path program 1 times
[2024-11-28 03:07:41,340 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:07:41,340 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14329922]
[2024-11-28 03:07:41,341 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:41,341 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:07:41,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:47,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:07:47,120 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:07:47,120 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14329922]
[2024-11-28 03:07:47,120 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14329922] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:07:47,120 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798226363]
[2024-11-28 03:07:47,121 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:47,122 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:07:47,122 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:07:47,126 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:07:47,128 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 03:07:48,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:49,016 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8059 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:07:49,066 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:07:49,224 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:07:49,224 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:07:49,224 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798226363] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:07:49,224 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:07:49,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:07:49,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204392321]
[2024-11-28 03:07:49,226 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:07:49,230 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:07:49,230 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:07:49,232 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:07:49,233 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:07:49,234 INFO  L87              Difference]: Start difference. First operand 4355 states and 7213 transitions. Second operand  has 3 states, 3 states have (on average 498.3333333333333) internal successors, (1495), 3 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:49,368 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:07:49,369 INFO  L93              Difference]: Finished difference Result 4369 states and 7230 transitions.
[2024-11-28 03:07:49,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:07:49,370 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 498.3333333333333) internal successors, (1495), 3 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3689
[2024-11-28 03:07:49,377 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:07:49,398 INFO  L225             Difference]: With dead ends: 4369
[2024-11-28 03:07:49,398 INFO  L226             Difference]: Without dead ends: 4356
[2024-11-28 03:07:49,401 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3694 GetRequests, 3689 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 03:07:49,401 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:07:49,402 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:07:49,409 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4356 states.
[2024-11-28 03:07:49,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4356.
[2024-11-28 03:07:49,645 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4356 states, 3914 states have (on average 1.6182933060807358) internal successors, (6334), 3914 states have internal predecessors, (6334), 440 states have call successors, (440), 1 states have call predecessors, (440), 1 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440)
[2024-11-28 03:07:49,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 7214 transitions.
[2024-11-28 03:07:49,669 INFO  L78                 Accepts]: Start accepts. Automaton has 4356 states and 7214 transitions. Word has length 3689
[2024-11-28 03:07:49,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:07:49,678 INFO  L471      AbstractCegarLoop]: Abstraction has 4356 states and 7214 transitions.
[2024-11-28 03:07:49,683 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 498.3333333333333) internal successors, (1495), 3 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:49,683 INFO  L276                IsEmpty]: Start isEmpty. Operand 4356 states and 7214 transitions.
[2024-11-28 03:07:49,795 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3690
[2024-11-28 03:07:49,795 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:07:49,797 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:07:49,817 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-28 03:07:49,997 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:07:49,998 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:07:49,999 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:07:50,000 INFO  L85        PathProgramCache]: Analyzing trace with hash 547614039, now seen corresponding path program 1 times
[2024-11-28 03:07:50,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:07:50,001 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654139296]
[2024-11-28 03:07:50,001 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:50,002 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:07:50,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:54,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:07:54,159 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:07:54,159 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654139296]
[2024-11-28 03:07:54,160 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654139296] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:07:54,160 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822946442]
[2024-11-28 03:07:54,161 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:54,161 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:07:54,161 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:07:54,163 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:07:54,166 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 03:07:55,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:07:55,934 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8059 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:07:56,010 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:07:56,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:07:56,261 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:07:56,261 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [822946442] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:07:56,261 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:07:56,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:07:56,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432246661]
[2024-11-28 03:07:56,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:07:56,267 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:07:56,268 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:07:56,271 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:07:56,271 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:07:56,273 INFO  L87              Difference]: Start difference. First operand 4356 states and 7214 transitions. Second operand  has 4 states, 4 states have (on average 373.75) internal successors, (1495), 4 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:56,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:07:56,489 INFO  L93              Difference]: Finished difference Result 4388 states and 7258 transitions.
[2024-11-28 03:07:56,490 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:07:56,491 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 373.75) internal successors, (1495), 4 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3689
[2024-11-28 03:07:56,498 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:07:56,518 INFO  L225             Difference]: With dead ends: 4388
[2024-11-28 03:07:56,519 INFO  L226             Difference]: Without dead ends: 4365
[2024-11-28 03:07:56,522 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3694 GetRequests, 3688 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 03:07:56,524 INFO  L435           NwaCegarLoop]: 7207 mSDtfsCounter, 9 mSDsluCounter, 14401 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21608 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 03:07:56,525 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21608 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:07:56,536 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4365 states.
[2024-11-28 03:07:56,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4365.
[2024-11-28 03:07:56,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4365 states, 3923 states have (on average 1.6176395615600305) internal successors, (6346), 3923 states have internal predecessors, (6346), 440 states have call successors, (440), 1 states have call predecessors, (440), 1 states have return successors, (440), 440 states have call predecessors, (440), 440 states have call successors, (440)
[2024-11-28 03:07:56,848 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 7226 transitions.
[2024-11-28 03:07:56,851 INFO  L78                 Accepts]: Start accepts. Automaton has 4365 states and 7226 transitions. Word has length 3689
[2024-11-28 03:07:56,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:07:56,861 INFO  L471      AbstractCegarLoop]: Abstraction has 4365 states and 7226 transitions.
[2024-11-28 03:07:56,862 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 373.75) internal successors, (1495), 4 states have internal predecessors, (1495), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:07:56,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 4365 states and 7226 transitions.
[2024-11-28 03:07:57,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3691
[2024-11-28 03:07:57,067 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:07:57,069 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:07:57,088 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-28 03:07:57,269 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:07:57,270 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:07:57,271 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:07:57,272 INFO  L85        PathProgramCache]: Analyzing trace with hash 700076756, now seen corresponding path program 1 times
[2024-11-28 03:07:57,272 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:07:57,273 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104664214]
[2024-11-28 03:07:57,273 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:07:57,274 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:07:57,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:02,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:02,132 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:02,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104664214]
[2024-11-28 03:08:02,133 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104664214] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:02,133 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783113185]
[2024-11-28 03:08:02,134 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:02,134 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:02,134 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:02,138 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:02,140 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-28 03:08:03,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:03,839 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8062 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:04,017 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:09,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:09,486 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:09,486 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783113185] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:09,486 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:09,487 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:08:09,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357442868]
[2024-11-28 03:08:09,487 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:09,493 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:08:09,494 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:09,496 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:08:09,496 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:08:09,497 INFO  L87              Difference]: Start difference. First operand 4365 states and 7226 transitions. Second operand  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:09,782 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:09,782 INFO  L93              Difference]: Finished difference Result 12036 states and 19928 transitions.
[2024-11-28 03:08:09,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:08:09,783 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440) Word has length 3690
[2024-11-28 03:08:09,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:09,820 INFO  L225             Difference]: With dead ends: 12036
[2024-11-28 03:08:09,821 INFO  L226             Difference]: Without dead ends: 8192
[2024-11-28 03:08:09,829 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3695 GetRequests, 3690 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 03:08:09,830 INFO  L435           NwaCegarLoop]: 10143 mSDtfsCounter, 4826 mSDsluCounter, 7218 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 17361 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:08:09,831 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 17361 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 03:08:09,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8192 states.
[2024-11-28 03:08:10,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 8192.
[2024-11-28 03:08:10,269 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8192 states, 7641 states have (on average 1.6318544693102996) internal successors, (12469), 7641 states have internal predecessors, (12469), 549 states have call successors, (549), 1 states have call predecessors, (549), 1 states have return successors, (549), 549 states have call predecessors, (549), 549 states have call successors, (549)
[2024-11-28 03:08:10,294 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 13567 transitions.
[2024-11-28 03:08:10,296 INFO  L78                 Accepts]: Start accepts. Automaton has 8192 states and 13567 transitions. Word has length 3690
[2024-11-28 03:08:10,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:10,301 INFO  L471      AbstractCegarLoop]: Abstraction has 8192 states and 13567 transitions.
[2024-11-28 03:08:10,302 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:10,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 8192 states and 13567 transitions.
[2024-11-28 03:08:10,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3691
[2024-11-28 03:08:10,406 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:10,407 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:10,427 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-28 03:08:10,608 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:10,608 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:10,609 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:10,611 INFO  L85        PathProgramCache]: Analyzing trace with hash 776271584, now seen corresponding path program 1 times
[2024-11-28 03:08:10,611 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:10,611 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944362349]
[2024-11-28 03:08:10,612 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:10,612 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:10,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:14,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:14,973 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:14,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944362349]
[2024-11-28 03:08:14,973 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944362349] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:14,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818494286]
[2024-11-28 03:08:14,974 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:14,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:14,974 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:14,980 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:14,993 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-28 03:08:16,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:16,803 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8062 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:16,826 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:16,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:16,964 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:16,964 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818494286] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:16,964 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:16,965 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:08:16,965 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837201005]
[2024-11-28 03:08:16,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:17,003 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:08:17,003 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:17,005 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:08:17,005 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:08:17,006 INFO  L87              Difference]: Start difference. First operand 8192 states and 13567 transitions. Second operand  has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:17,177 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:17,177 INFO  L93              Difference]: Finished difference Result 8260 states and 13668 transitions.
[2024-11-28 03:08:17,178 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:08:17,179 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3690
[2024-11-28 03:08:17,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:17,227 INFO  L225             Difference]: With dead ends: 8260
[2024-11-28 03:08:17,227 INFO  L226             Difference]: Without dead ends: 8209
[2024-11-28 03:08:17,231 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3695 GetRequests, 3689 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:08:17,232 INFO  L435           NwaCegarLoop]: 7207 mSDtfsCounter, 9 mSDsluCounter, 14401 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21608 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 03:08:17,233 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21608 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:08:17,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8209 states.
[2024-11-28 03:08:17,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8209 to 8209.
[2024-11-28 03:08:17,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8209 states, 7658 states have (on average 1.6314964742752678) internal successors, (12494), 7658 states have internal predecessors, (12494), 549 states have call successors, (549), 1 states have call predecessors, (549), 1 states have return successors, (549), 549 states have call predecessors, (549), 549 states have call successors, (549)
[2024-11-28 03:08:17,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 13592 transitions.
[2024-11-28 03:08:17,615 INFO  L78                 Accepts]: Start accepts. Automaton has 8209 states and 13592 transitions. Word has length 3690
[2024-11-28 03:08:17,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:17,626 INFO  L471      AbstractCegarLoop]: Abstraction has 8209 states and 13592 transitions.
[2024-11-28 03:08:17,627 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:17,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 8209 states and 13592 transitions.
[2024-11-28 03:08:17,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3691
[2024-11-28 03:08:17,837 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:17,839 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:17,862 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-28 03:08:18,040 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:18,040 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:18,045 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:18,046 INFO  L85        PathProgramCache]: Analyzing trace with hash 1760367802, now seen corresponding path program 1 times
[2024-11-28 03:08:18,046 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:18,046 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700017415]
[2024-11-28 03:08:18,047 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:18,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:18,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:22,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:22,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:22,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700017415]
[2024-11-28 03:08:22,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700017415] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:22,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323879146]
[2024-11-28 03:08:22,522 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:22,523 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:22,523 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:22,525 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:22,531 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-28 03:08:24,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:24,252 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8062 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:24,282 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:24,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:24,439 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:24,439 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [323879146] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:24,439 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:24,440 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:08:24,440 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538707982]
[2024-11-28 03:08:24,440 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:24,444 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:08:24,444 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:24,447 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:08:24,447 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:08:24,448 INFO  L87              Difference]: Start difference. First operand 8209 states and 13592 transitions. Second operand  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:24,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:24,565 INFO  L93              Difference]: Finished difference Result 8240 states and 13633 transitions.
[2024-11-28 03:08:24,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:08:24,566 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3690
[2024-11-28 03:08:24,572 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:24,594 INFO  L225             Difference]: With dead ends: 8240
[2024-11-28 03:08:24,594 INFO  L226             Difference]: Without dead ends: 8202
[2024-11-28 03:08:24,599 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3695 GetRequests, 3690 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 03:08:24,600 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:08:24,600 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:08:24,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8202 states.
[2024-11-28 03:08:24,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8202 to 8202.
[2024-11-28 03:08:24,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8202 states, 7651 states have (on average 1.6311593255783559) internal successors, (12480), 7651 states have internal predecessors, (12480), 549 states have call successors, (549), 1 states have call predecessors, (549), 1 states have return successors, (549), 549 states have call predecessors, (549), 549 states have call successors, (549)
[2024-11-28 03:08:24,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 13578 transitions.
[2024-11-28 03:08:24,947 INFO  L78                 Accepts]: Start accepts. Automaton has 8202 states and 13578 transitions. Word has length 3690
[2024-11-28 03:08:24,953 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:24,954 INFO  L471      AbstractCegarLoop]: Abstraction has 8202 states and 13578 transitions.
[2024-11-28 03:08:24,955 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 498.6666666666667) internal successors, (1496), 3 states have internal predecessors, (1496), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:24,955 INFO  L276                IsEmpty]: Start isEmpty. Operand 8202 states and 13578 transitions.
[2024-11-28 03:08:25,182 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3692
[2024-11-28 03:08:25,182 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:25,184 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:25,211 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-28 03:08:25,385 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-28 03:08:25,385 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:25,386 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:25,387 INFO  L85        PathProgramCache]: Analyzing trace with hash 1524689169, now seen corresponding path program 1 times
[2024-11-28 03:08:25,388 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:25,388 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761680793]
[2024-11-28 03:08:25,393 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:25,393 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:25,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:29,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:29,854 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:29,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761680793]
[2024-11-28 03:08:29,855 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761680793] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:29,855 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203599193]
[2024-11-28 03:08:29,856 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:29,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:29,856 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:29,858 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:29,860 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-28 03:08:31,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:31,562 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8065 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:31,604 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:35,996 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:35,996 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:35,996 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203599193] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:35,996 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:35,997 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:08:35,997 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906409594]
[2024-11-28 03:08:35,997 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:36,000 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:08:36,000 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:36,005 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:08:36,005 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:08:36,006 INFO  L87              Difference]: Start difference. First operand 8202 states and 13578 transitions. Second operand  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:36,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:36,233 INFO  L93              Difference]: Finished difference Result 15870 states and 26266 transitions.
[2024-11-28 03:08:36,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:08:36,234 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440) Word has length 3691
[2024-11-28 03:08:36,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:36,268 INFO  L225             Difference]: With dead ends: 15870
[2024-11-28 03:08:36,268 INFO  L226             Difference]: Without dead ends: 12024
[2024-11-28 03:08:36,277 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3696 GetRequests, 3691 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 03:08:36,278 INFO  L435           NwaCegarLoop]: 9059 mSDtfsCounter, 4829 mSDsluCounter, 7200 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 16259 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:08:36,279 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 16259 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 03:08:36,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12024 states.
[2024-11-28 03:08:36,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 12011.
[2024-11-28 03:08:36,668 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12011 states, 11351 states have (on average 1.6358911109153378) internal successors, (18569), 11351 states have internal predecessors, (18569), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:08:36,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12011 states to 12011 states and 19885 transitions.
[2024-11-28 03:08:36,693 INFO  L78                 Accepts]: Start accepts. Automaton has 12011 states and 19885 transitions. Word has length 3691
[2024-11-28 03:08:36,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:36,697 INFO  L471      AbstractCegarLoop]: Abstraction has 12011 states and 19885 transitions.
[2024-11-28 03:08:36,698 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 3 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 3 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:36,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 12011 states and 19885 transitions.
[2024-11-28 03:08:36,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3692
[2024-11-28 03:08:36,819 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:36,821 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:36,840 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-11-28 03:08:37,021 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-11-28 03:08:37,022 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:37,023 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:37,025 INFO  L85        PathProgramCache]: Analyzing trace with hash 304260893, now seen corresponding path program 1 times
[2024-11-28 03:08:37,026 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:37,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351400260]
[2024-11-28 03:08:37,027 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:37,027 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:37,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:41,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:41,194 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:41,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351400260]
[2024-11-28 03:08:41,194 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351400260] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:41,194 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432612158]
[2024-11-28 03:08:41,195 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:41,195 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:41,195 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:41,198 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:41,202 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-28 03:08:42,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:42,948 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8065 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:42,969 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:43,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:43,034 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:43,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432612158] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:43,034 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:43,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:08:43,035 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883150448]
[2024-11-28 03:08:43,035 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:43,037 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:08:43,037 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:43,039 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:08:43,040 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:08:43,041 INFO  L87              Difference]: Start difference. First operand 12011 states and 19885 transitions. Second operand  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:43,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:43,158 INFO  L93              Difference]: Finished difference Result 12085 states and 19991 transitions.
[2024-11-28 03:08:43,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:08:43,159 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3691
[2024-11-28 03:08:43,164 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:43,191 INFO  L225             Difference]: With dead ends: 12085
[2024-11-28 03:08:43,191 INFO  L226             Difference]: Without dead ends: 12030
[2024-11-28 03:08:43,196 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3696 GetRequests, 3691 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 03:08:43,196 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 8 mSDsluCounter, 7202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14412 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 03:08:43,197 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14412 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:08:43,207 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12030 states.
[2024-11-28 03:08:43,636 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12030 to 12030.
[2024-11-28 03:08:43,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12030 states, 11370 states have (on average 1.6356200527704485) internal successors, (18597), 11370 states have internal predecessors, (18597), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:08:43,673 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12030 states to 12030 states and 19913 transitions.
[2024-11-28 03:08:43,675 INFO  L78                 Accepts]: Start accepts. Automaton has 12030 states and 19913 transitions. Word has length 3691
[2024-11-28 03:08:43,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:43,680 INFO  L471      AbstractCegarLoop]: Abstraction has 12030 states and 19913 transitions.
[2024-11-28 03:08:43,681 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:43,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 12030 states and 19913 transitions.
[2024-11-28 03:08:43,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3692
[2024-11-28 03:08:43,891 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:43,893 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:43,911 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-11-28 03:08:44,093 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2024-11-28 03:08:44,094 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:44,095 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:44,096 INFO  L85        PathProgramCache]: Analyzing trace with hash 1567901687, now seen corresponding path program 1 times
[2024-11-28 03:08:44,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:44,096 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651725086]
[2024-11-28 03:08:44,097 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:44,097 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:44,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:47,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:47,585 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:47,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651725086]
[2024-11-28 03:08:47,585 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651725086] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:47,585 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830678196]
[2024-11-28 03:08:47,586 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:47,586 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:47,586 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:47,587 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:47,624 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-28 03:08:49,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:49,136 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8065 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:49,158 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:49,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 1756 proven. 0 refuted. 0 times theorem prover too weak. 384564 trivial. 0 not checked.
[2024-11-28 03:08:49,229 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:49,230 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [830678196] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:49,230 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:49,230 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:08:49,230 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687187427]
[2024-11-28 03:08:49,230 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:49,232 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:08:49,232 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:49,233 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:08:49,233 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:08:49,234 INFO  L87              Difference]: Start difference. First operand 12030 states and 19913 transitions. Second operand  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:49,336 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:49,336 INFO  L93              Difference]: Finished difference Result 12085 states and 19987 transitions.
[2024-11-28 03:08:49,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:08:49,337 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3691
[2024-11-28 03:08:49,341 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:49,369 INFO  L225             Difference]: With dead ends: 12085
[2024-11-28 03:08:49,369 INFO  L226             Difference]: Without dead ends: 12015
[2024-11-28 03:08:49,374 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3696 GetRequests, 3691 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 03:08:49,374 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:08:49,375 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:08:49,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12015 states.
[2024-11-28 03:08:49,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 12015.
[2024-11-28 03:08:49,786 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12015 states, 11355 states have (on average 1.6353148392778512) internal successors, (18569), 11355 states have internal predecessors, (18569), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:08:49,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12015 states to 12015 states and 19885 transitions.
[2024-11-28 03:08:49,820 INFO  L78                 Accepts]: Start accepts. Automaton has 12015 states and 19885 transitions. Word has length 3691
[2024-11-28 03:08:49,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:49,824 INFO  L471      AbstractCegarLoop]: Abstraction has 12015 states and 19885 transitions.
[2024-11-28 03:08:49,825 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:08:49,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 12015 states and 19885 transitions.
[2024-11-28 03:08:50,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3692
[2024-11-28 03:08:50,037 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:50,038 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:50,058 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-11-28 03:08:50,239 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-11-28 03:08:50,239 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:50,240 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:50,242 INFO  L85        PathProgramCache]: Analyzing trace with hash 1461265483, now seen corresponding path program 1 times
[2024-11-28 03:08:50,242 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:50,242 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165201758]
[2024-11-28 03:08:50,243 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:50,243 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:08:50,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:54,301 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:08:54,302 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:08:54,302 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165201758]
[2024-11-28 03:08:54,302 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165201758] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:08:54,302 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998334604]
[2024-11-28 03:08:54,302 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:54,302 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:08:54,303 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:08:54,304 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:08:54,305 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-28 03:08:55,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:08:55,845 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8065 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:08:55,867 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:08:56,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 3070 proven. 0 refuted. 0 times theorem prover too weak. 383250 trivial. 0 not checked.
[2024-11-28 03:08:56,202 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:08:56,202 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998334604] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:08:56,202 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:08:56,203 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:08:56,203 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080771532]
[2024-11-28 03:08:56,203 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:08:56,206 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:08:56,206 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:08:56,209 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:08:56,209 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:08:56,210 INFO  L87              Difference]: Start difference. First operand 12015 states and 19885 transitions. Second operand  has 6 states, 5 states have (on average 300.0) internal successors, (1500), 6 states have internal predecessors, (1500), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:58,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:08:58,865 INFO  L93              Difference]: Finished difference Result 12135 states and 20057 transitions.
[2024-11-28 03:08:58,866 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:08:58,866 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 300.0) internal successors, (1500), 6 states have internal predecessors, (1500), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440) Word has length 3691
[2024-11-28 03:08:58,871 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:08:58,908 INFO  L225             Difference]: With dead ends: 12135
[2024-11-28 03:08:58,908 INFO  L226             Difference]: Without dead ends: 12021
[2024-11-28 03:08:58,913 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3696 GetRequests, 3690 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 03:08:58,915 INFO  L435           NwaCegarLoop]: 6767 mSDtfsCounter, 1 mSDsluCounter, 26175 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32942 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2024-11-28 03:08:58,915 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32942 Invalid, 3110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2024-11-28 03:08:58,927 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12021 states.
[2024-11-28 03:08:59,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12021 to 12021.
[2024-11-28 03:08:59,484 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12021 states, 11361 states have (on average 1.6349793152011267) internal successors, (18575), 11361 states have internal predecessors, (18575), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:08:59,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 19891 transitions.
[2024-11-28 03:08:59,517 INFO  L78                 Accepts]: Start accepts. Automaton has 12021 states and 19891 transitions. Word has length 3691
[2024-11-28 03:08:59,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:08:59,521 INFO  L471      AbstractCegarLoop]: Abstraction has 12021 states and 19891 transitions.
[2024-11-28 03:08:59,522 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 300.0) internal successors, (1500), 6 states have internal predecessors, (1500), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:08:59,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 12021 states and 19891 transitions.
[2024-11-28 03:08:59,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3693
[2024-11-28 03:08:59,714 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:08:59,715 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:08:59,736 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-11-28 03:08:59,916 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-28 03:08:59,916 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:08:59,918 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:08:59,919 INFO  L85        PathProgramCache]: Analyzing trace with hash 554136524, now seen corresponding path program 1 times
[2024-11-28 03:08:59,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:08:59,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846301869]
[2024-11-28 03:08:59,920 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:08:59,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:00,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:03,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:03,775 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:03,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846301869]
[2024-11-28 03:09:03,775 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846301869] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:03,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909597272]
[2024-11-28 03:09:03,776 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:03,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:03,776 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:03,780 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:03,782 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-28 03:09:05,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:05,487 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8068 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:05,509 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:05,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 3504 proven. 0 refuted. 0 times theorem prover too weak. 382816 trivial. 0 not checked.
[2024-11-28 03:09:05,577 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:05,578 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909597272] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:05,578 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:05,578 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:09:05,578 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671481495]
[2024-11-28 03:09:05,578 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:05,580 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:09:05,580 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:05,581 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:09:05,581 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:09:05,581 INFO  L87              Difference]: Start difference. First operand 12021 states and 19891 transitions. Second operand  has 4 states, 4 states have (on average 374.5) internal successors, (1498), 4 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:05,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:05,684 INFO  L93              Difference]: Finished difference Result 12195 states and 20147 transitions.
[2024-11-28 03:09:05,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:09:05,684 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 374.5) internal successors, (1498), 4 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3692
[2024-11-28 03:09:05,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:05,717 INFO  L225             Difference]: With dead ends: 12195
[2024-11-28 03:09:05,717 INFO  L226             Difference]: Without dead ends: 12048
[2024-11-28 03:09:05,722 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3697 GetRequests, 3691 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 03:09:05,724 INFO  L435           NwaCegarLoop]: 7207 mSDtfsCounter, 9 mSDsluCounter, 14401 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21608 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 03:09:05,724 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21608 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:09:05,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12048 states.
[2024-11-28 03:09:06,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12048 to 12048.
[2024-11-28 03:09:06,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12048 states, 11388 states have (on average 1.6345275728837372) internal successors, (18614), 11388 states have internal predecessors, (18614), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:06,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12048 states to 12048 states and 19930 transitions.
[2024-11-28 03:09:06,140 INFO  L78                 Accepts]: Start accepts. Automaton has 12048 states and 19930 transitions. Word has length 3692
[2024-11-28 03:09:06,145 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:06,145 INFO  L471      AbstractCegarLoop]: Abstraction has 12048 states and 19930 transitions.
[2024-11-28 03:09:06,146 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 374.5) internal successors, (1498), 4 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:06,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 12048 states and 19930 transitions.
[2024-11-28 03:09:06,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3693
[2024-11-28 03:09:06,327 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:09:06,329 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:09:06,350 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-28 03:09:06,529 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:06,529 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:09:06,530 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:09:06,531 INFO  L85        PathProgramCache]: Analyzing trace with hash -575101262, now seen corresponding path program 1 times
[2024-11-28 03:09:06,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:09:06,531 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471066452]
[2024-11-28 03:09:06,532 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:06,532 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:06,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:10,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:10,125 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:10,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471066452]
[2024-11-28 03:09:10,125 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471066452] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:10,125 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37016925]
[2024-11-28 03:09:10,126 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:10,126 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:10,126 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:10,128 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:10,134 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-28 03:09:11,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:11,779 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8068 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:11,814 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:11,882 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 3504 proven. 0 refuted. 0 times theorem prover too weak. 382816 trivial. 0 not checked.
[2024-11-28 03:09:11,882 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:11,882 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [37016925] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:11,882 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:11,882 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:09:11,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601917465]
[2024-11-28 03:09:11,883 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:11,884 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:09:11,884 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:11,886 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:09:11,886 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:09:11,887 INFO  L87              Difference]: Start difference. First operand 12048 states and 19930 transitions. Second operand  has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:11,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:11,994 INFO  L93              Difference]: Finished difference Result 12186 states and 20126 transitions.
[2024-11-28 03:09:11,994 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:09:11,995 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3692
[2024-11-28 03:09:11,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:12,024 INFO  L225             Difference]: With dead ends: 12186
[2024-11-28 03:09:12,024 INFO  L226             Difference]: Without dead ends: 12051
[2024-11-28 03:09:12,029 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3697 GetRequests, 3692 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 03:09:12,030 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:09:12,030 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:09:12,039 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12051 states.
[2024-11-28 03:09:12,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12051 to 12051.
[2024-11-28 03:09:12,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12051 states, 11391 states have (on average 1.6340970941971733) internal successors, (18614), 11391 states have internal predecessors, (18614), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:12,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12051 states to 12051 states and 19930 transitions.
[2024-11-28 03:09:12,426 INFO  L78                 Accepts]: Start accepts. Automaton has 12051 states and 19930 transitions. Word has length 3692
[2024-11-28 03:09:12,429 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:12,429 INFO  L471      AbstractCegarLoop]: Abstraction has 12051 states and 19930 transitions.
[2024-11-28 03:09:12,430 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:12,430 INFO  L276                IsEmpty]: Start isEmpty. Operand 12051 states and 19930 transitions.
[2024-11-28 03:09:12,523 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3694
[2024-11-28 03:09:12,523 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:09:12,524 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:09:12,539 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-28 03:09:12,724 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-28 03:09:12,725 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:09:12,725 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:09:12,726 INFO  L85        PathProgramCache]: Analyzing trace with hash -2143714671, now seen corresponding path program 1 times
[2024-11-28 03:09:12,726 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:09:12,726 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984817659]
[2024-11-28 03:09:12,727 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:12,727 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:12,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:16,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:16,666 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:16,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984817659]
[2024-11-28 03:09:16,666 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984817659] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:16,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152495295]
[2024-11-28 03:09:16,667 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:16,667 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:16,667 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:16,669 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:16,671 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-28 03:09:18,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:18,223 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8071 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:18,249 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:18,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 4815 proven. 0 refuted. 0 times theorem prover too weak. 381505 trivial. 0 not checked.
[2024-11-28 03:09:18,371 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:18,371 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152495295] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:18,371 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:18,372 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:09:18,374 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218381603]
[2024-11-28 03:09:18,374 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:18,376 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:09:18,377 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:18,379 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:09:18,379 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:09:18,380 INFO  L87              Difference]: Start difference. First operand 12051 states and 19930 transitions. Second operand  has 6 states, 5 states have (on average 300.4) internal successors, (1502), 6 states have internal predecessors, (1502), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:09:20,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:20,704 INFO  L93              Difference]: Finished difference Result 12312 states and 20321 transitions.
[2024-11-28 03:09:20,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:09:20,705 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 300.4) internal successors, (1502), 6 states have internal predecessors, (1502), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440) Word has length 3693
[2024-11-28 03:09:20,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:20,735 INFO  L225             Difference]: With dead ends: 12312
[2024-11-28 03:09:20,735 INFO  L226             Difference]: Without dead ends: 12057
[2024-11-28 03:09:20,740 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3698 GetRequests, 3692 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 03:09:20,741 INFO  L435           NwaCegarLoop]: 6767 mSDtfsCounter, 1 mSDsluCounter, 26175 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32942 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:09:20,741 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32942 Invalid, 3110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2024-11-28 03:09:20,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12057 states.
[2024-11-28 03:09:21,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12057 to 12057.
[2024-11-28 03:09:21,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12057 states, 11397 states have (on average 1.6337632710362375) internal successors, (18620), 11397 states have internal predecessors, (18620), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:21,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12057 states to 12057 states and 19936 transitions.
[2024-11-28 03:09:21,157 INFO  L78                 Accepts]: Start accepts. Automaton has 12057 states and 19936 transitions. Word has length 3693
[2024-11-28 03:09:21,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:21,160 INFO  L471      AbstractCegarLoop]: Abstraction has 12057 states and 19936 transitions.
[2024-11-28 03:09:21,161 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 300.4) internal successors, (1502), 6 states have internal predecessors, (1502), 3 states have call successors, (440), 2 states have call predecessors, (440), 3 states have return successors, (440), 2 states have call predecessors, (440), 3 states have call successors, (440)
[2024-11-28 03:09:21,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 12057 states and 19936 transitions.
[2024-11-28 03:09:21,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3695
[2024-11-28 03:09:21,260 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:09:21,261 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:09:21,281 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-28 03:09:21,462 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:21,462 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:09:21,463 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:09:21,465 INFO  L85        PathProgramCache]: Analyzing trace with hash -715018428, now seen corresponding path program 1 times
[2024-11-28 03:09:21,465 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:09:21,465 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344279070]
[2024-11-28 03:09:21,466 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:21,466 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:21,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:24,877 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:24,877 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:24,877 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344279070]
[2024-11-28 03:09:24,878 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344279070] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:24,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351025730]
[2024-11-28 03:09:24,878 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:24,878 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:24,878 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:24,881 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:24,884 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-28 03:09:26,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:26,807 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8074 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:26,854 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:27,029 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 5244 proven. 0 refuted. 0 times theorem prover too weak. 381076 trivial. 0 not checked.
[2024-11-28 03:09:27,029 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:27,029 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351025730] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:27,029 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:27,030 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:09:27,030 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851138894]
[2024-11-28 03:09:27,030 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:27,035 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:09:27,036 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:27,040 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:09:27,040 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:09:27,041 INFO  L87              Difference]: Start difference. First operand 12057 states and 19936 transitions. Second operand  has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:27,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:27,205 INFO  L93              Difference]: Finished difference Result 12372 states and 20411 transitions.
[2024-11-28 03:09:27,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:09:27,206 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3694
[2024-11-28 03:09:27,211 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:27,237 INFO  L225             Difference]: With dead ends: 12372
[2024-11-28 03:09:27,237 INFO  L226             Difference]: Without dead ends: 12084
[2024-11-28 03:09:27,243 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3699 GetRequests, 3693 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 03:09:27,244 INFO  L435           NwaCegarLoop]: 7207 mSDtfsCounter, 9 mSDsluCounter, 14401 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21608 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 03:09:27,244 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21608 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:09:27,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12084 states.
[2024-11-28 03:09:27,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12084 to 12084.
[2024-11-28 03:09:27,696 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12084 states, 11424 states have (on average 1.6333158263305323) internal successors, (18659), 11424 states have internal predecessors, (18659), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:27,727 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12084 states to 12084 states and 19975 transitions.
[2024-11-28 03:09:27,730 INFO  L78                 Accepts]: Start accepts. Automaton has 12084 states and 19975 transitions. Word has length 3694
[2024-11-28 03:09:27,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:27,734 INFO  L471      AbstractCegarLoop]: Abstraction has 12084 states and 19975 transitions.
[2024-11-28 03:09:27,735 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:27,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 12084 states and 19975 transitions.
[2024-11-28 03:09:27,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3695
[2024-11-28 03:09:27,921 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:09:27,923 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:09:27,944 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2024-11-28 03:09:28,123 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-11-28 03:09:28,123 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:09:28,124 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:09:28,126 INFO  L85        PathProgramCache]: Analyzing trace with hash -2007640418, now seen corresponding path program 1 times
[2024-11-28 03:09:28,126 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:09:28,126 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977733864]
[2024-11-28 03:09:28,126 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:28,127 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:28,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:31,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:31,576 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:31,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977733864]
[2024-11-28 03:09:31,576 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977733864] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:31,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715671993]
[2024-11-28 03:09:31,577 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:31,577 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:31,577 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:31,578 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:31,580 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-28 03:09:33,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:33,289 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8074 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:33,313 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:33,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 5244 proven. 0 refuted. 0 times theorem prover too weak. 381076 trivial. 0 not checked.
[2024-11-28 03:09:33,412 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:33,413 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [715671993] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:33,413 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:33,414 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:09:33,414 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282161230]
[2024-11-28 03:09:33,414 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:33,416 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:09:33,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:33,418 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:09:33,418 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:09:33,419 INFO  L87              Difference]: Start difference. First operand 12084 states and 19975 transitions. Second operand  has 3 states, 3 states have (on average 500.0) internal successors, (1500), 3 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:33,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:33,524 INFO  L93              Difference]: Finished difference Result 12363 states and 20390 transitions.
[2024-11-28 03:09:33,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:09:33,525 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 500.0) internal successors, (1500), 3 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3694
[2024-11-28 03:09:33,529 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:33,549 INFO  L225             Difference]: With dead ends: 12363
[2024-11-28 03:09:33,550 INFO  L226             Difference]: Without dead ends: 12087
[2024-11-28 03:09:33,555 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3699 GetRequests, 3694 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 03:09:33,555 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:09:33,555 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:09:33,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12087 states.
[2024-11-28 03:09:33,918 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 12087.
[2024-11-28 03:09:33,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12087 states, 11427 states have (on average 1.6328870219655203) internal successors, (18659), 11427 states have internal predecessors, (18659), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:33,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12087 states to 12087 states and 19975 transitions.
[2024-11-28 03:09:33,952 INFO  L78                 Accepts]: Start accepts. Automaton has 12087 states and 19975 transitions. Word has length 3694
[2024-11-28 03:09:33,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:33,955 INFO  L471      AbstractCegarLoop]: Abstraction has 12087 states and 19975 transitions.
[2024-11-28 03:09:33,955 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 500.0) internal successors, (1500), 3 states have internal predecessors, (1500), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:33,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 12087 states and 19975 transitions.
[2024-11-28 03:09:34,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3696
[2024-11-28 03:09:34,053 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:09:34,054 INFO  L218           NwaCegarLoop]: trace histogram [440, 440, 440, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 03:09:34,074 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-11-28 03:09:34,255 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-28 03:09:34,255 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:09:34,256 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:09:34,256 INFO  L85        PathProgramCache]: Analyzing trace with hash -448535951, now seen corresponding path program 1 times
[2024-11-28 03:09:34,256 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:09:34,256 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13312987]
[2024-11-28 03:09:34,257 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:34,257 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:09:34,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:37,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 990 proven. 327 refuted. 0 times theorem prover too weak. 385003 trivial. 0 not checked.
[2024-11-28 03:09:37,398 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:09:37,399 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13312987]
[2024-11-28 03:09:37,399 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13312987] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:09:37,399 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383850320]
[2024-11-28 03:09:37,399 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:09:37,400 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:09:37,400 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:09:37,402 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:09:37,405 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37369dbc-df14-4031-8bc7-2cb60a16e6ce/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-28 03:09:39,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:09:39,117 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8077 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:09:39,158 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:09:39,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 386320 backedges. 5244 proven. 0 refuted. 0 times theorem prover too weak. 381076 trivial. 0 not checked.
[2024-11-28 03:09:39,315 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:09:39,315 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [383850320] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:09:39,315 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:09:39,316 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:09:39,316 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131439629]
[2024-11-28 03:09:39,316 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:09:39,320 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:09:39,320 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:09:39,323 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:09:39,323 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:09:39,324 INFO  L87              Difference]: Start difference. First operand 12087 states and 19975 transitions. Second operand  has 3 states, 3 states have (on average 500.3333333333333) internal successors, (1501), 3 states have internal predecessors, (1501), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:39,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:09:39,451 INFO  L93              Difference]: Finished difference Result 12390 states and 20429 transitions.
[2024-11-28 03:09:39,451 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:09:39,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 500.3333333333333) internal successors, (1501), 3 states have internal predecessors, (1501), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440) Word has length 3695
[2024-11-28 03:09:39,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:09:39,473 INFO  L225             Difference]: With dead ends: 12390
[2024-11-28 03:09:39,473 INFO  L226             Difference]: Without dead ends: 12090
[2024-11-28 03:09:39,479 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 3700 GetRequests, 3695 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 03:09:39,479 INFO  L435           NwaCegarLoop]: 7210 mSDtfsCounter, 0 mSDsluCounter, 7201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14411 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 03:09:39,480 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:09:39,491 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12090 states.
[2024-11-28 03:09:39,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12090 to 12090.
[2024-11-28 03:09:39,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12090 states, 11430 states have (on average 1.6327209098862643) internal successors, (18662), 11430 states have internal predecessors, (18662), 658 states have call successors, (658), 1 states have call predecessors, (658), 1 states have return successors, (658), 658 states have call predecessors, (658), 658 states have call successors, (658)
[2024-11-28 03:09:40,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12090 states to 12090 states and 19978 transitions.
[2024-11-28 03:09:40,024 INFO  L78                 Accepts]: Start accepts. Automaton has 12090 states and 19978 transitions. Word has length 3695
[2024-11-28 03:09:40,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:09:40,028 INFO  L471      AbstractCegarLoop]: Abstraction has 12090 states and 19978 transitions.
[2024-11-28 03:09:40,029 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 500.3333333333333) internal successors, (1501), 3 states have internal predecessors, (1501), 2 states have call successors, (440), 2 states have call predecessors, (440), 2 states have return successors, (440), 2 states have call predecessors, (440), 2 states have call successors, (440)
[2024-11-28 03:09:40,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 12090 states and 19978 transitions.