./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-100.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_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/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_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/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_d4153edd-d50b-4d85-b356-a4373721f55d/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 40cf886ba74af217ef2598256aae0587ccefcf812aa46bf7dcbb9cef73df88ab
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 03:53:42,222 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 03:53:42,302 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 03:53:42,308 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 03:53:42,309 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 03:53:42,339 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 03:53:42,340 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 03:53:42,340 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 03:53:42,341 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 03:53:42,341 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 03:53:42,341 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 03:53:42,341 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 03:53:42,342 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 03:53:42,342 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 03:53:42,342 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 03:53:42,342 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 03:53:42,342 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 03:53:42,343 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 03:53:42,343 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 03:53:42,343 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 03:53:42,343 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 03:53:42,343 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 03:53:42,344 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 03:53:42,344 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 03:53:42,344 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 03:53:42,344 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 03:53:42,344 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 03:53:42,345 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 03:53:42,345 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 03:53:42,345 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:53:42,345 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:53:42,345 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:53:42,346 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:53:42,346 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 03:53:42,346 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:53:42,346 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:53:42,346 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:53:42,347 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:53:42,347 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 03:53:42,347 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 03:53:42,348 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 03:53:42,349 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 03:53:42,349 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 03:53:42,349 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_d4153edd-d50b-4d85-b356-a4373721f55d/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 -> 40cf886ba74af217ef2598256aae0587ccefcf812aa46bf7dcbb9cef73df88ab
[2024-11-28 03:53:42,691 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 03:53:42,708 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 03:53:42,713 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 03:53:42,714 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 03:53:42,715 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 03:53:42,716 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-100.c
[2024-11-28 03:53:46,311 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/data/9ac6918b1/79f2f280ae5f4ae7ae11b8e883b5f06e/FLAGf5312800d
[2024-11-28 03:53:46,862 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 03:53:46,867 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/sv-benchmarks/c/xcsp/Dubois-100.c
[2024-11-28 03:53:46,894 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/data/9ac6918b1/79f2f280ae5f4ae7ae11b8e883b5f06e/FLAGf5312800d
[2024-11-28 03:53:46,921 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/data/9ac6918b1/79f2f280ae5f4ae7ae11b8e883b5f06e
[2024-11-28 03:53:46,927 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 03:53:46,929 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 03:53:46,930 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 03:53:46,930 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 03:53:46,936 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 03:53:46,937 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:46" (1/1) ...
[2024-11-28 03:53:46,938 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329ca440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46, skipping insertion in model container
[2024-11-28 03:53:46,938 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:46" (1/1) ...
[2024-11-28 03:53:46,996 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 03:53:48,004 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_d4153edd-d50b-4d85-b356-a4373721f55d/sv-benchmarks/c/xcsp/Dubois-100.c[71520,71533]
[2024-11-28 03:53:48,059 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:53:48,072 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 03:53:48,426 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_d4153edd-d50b-4d85-b356-a4373721f55d/sv-benchmarks/c/xcsp/Dubois-100.c[71520,71533]
[2024-11-28 03:53:48,485 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:53:48,511 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 03:53:48,512 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48 WrapperNode
[2024-11-28 03:53:48,512 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 03:53:48,515 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 03:53:48,515 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 03:53:48,515 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 03:53:48,531 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:48,656 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:50,161 INFO  L138                Inliner]: procedures = 13, calls = 807, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19916
[2024-11-28 03:53:50,162 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 03:53:50,163 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 03:53:50,163 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 03:53:50,163 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 03:53:50,175 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:50,176 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:50,413 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:50,837 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 03:53:50,840 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:50,844 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:51,774 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:51,851 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:52,011 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:52,068 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:52,208 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:52,370 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 03:53:52,372 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 03:53:52,372 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 03:53:52,372 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 03:53:52,377 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (1/1) ...
[2024-11-28 03:53:52,384 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:53:52,402 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:53:52,420 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 03:53:52,426 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 03:53:52,463 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 03:53:52,463 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 03:53:52,463 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 03:53:52,463 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 03:53:52,464 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2024-11-28 03:53:52,464 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2024-11-28 03:53:53,220 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 03:53:53,223 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 03:54:37,463 INFO  L?                        ?]: Removed 6905 outVars from TransFormulas that were not future-live.
[2024-11-28 03:54:37,464 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 03:54:37,641 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 03:54:37,641 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-28 03:54:37,641 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:37 BoogieIcfgContainer
[2024-11-28 03:54:37,641 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 03:54:37,644 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 03:54:37,646 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 03:54:37,653 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 03:54:37,655 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:53:46" (1/3) ...
[2024-11-28 03:54:37,656 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e36acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:37, skipping insertion in model container
[2024-11-28 03:54:37,658 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:48" (2/3) ...
[2024-11-28 03:54:37,658 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e36acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:37, skipping insertion in model container
[2024-11-28 03:54:37,658 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:37" (3/3) ...
[2024-11-28 03:54:37,660 INFO  L128   eAbstractionObserver]: Analyzing ICFG Dubois-100.c
[2024-11-28 03:54:37,680 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 03:54:37,683 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-100.c that has 2 procedures, 7911 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-11-28 03:54:38,005 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 03:54:38,022 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;@c63c57a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 03:54:38,023 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 03:54:38,061 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7911 states, 7108 states have (on average 1.6193021947101858) internal successors, (11510), 7109 states have internal predecessors, (11510), 800 states have call successors, (800), 1 states have call predecessors, (800), 1 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800)
[2024-11-28 03:54:38,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6704
[2024-11-28 03:54:38,696 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:54:38,700 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:54:38,701 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:54:38,712 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:54:38,715 INFO  L85        PathProgramCache]: Analyzing trace with hash 797065842, now seen corresponding path program 1 times
[2024-11-28 03:54:38,725 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:54:38,727 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856009194]
[2024-11-28 03:54:38,729 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:54:38,730 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:54:40,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:55:06,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 1800 proven. 597 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:55:06,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:55:06,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856009194]
[2024-11-28 03:55:06,926 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856009194] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:55:06,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851272907]
[2024-11-28 03:55:06,932 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:55:06,933 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:55:06,933 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:55:06,943 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:55:06,952 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 03:55:12,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:55:12,447 INFO  L256         TraceCheckSpWp]: Trace formula consists of 14626 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:55:12,569 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:55:13,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 2397 proven. 0 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:55:13,578 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:55:13,578 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [851272907] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:55:13,578 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:55:13,580 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:55:13,583 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697715879]
[2024-11-28 03:55:13,584 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:55:13,603 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:55:13,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:55:13,642 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:55:13,643 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:55:13,663 INFO  L87              Difference]: Start difference. First operand  has 7911 states, 7108 states have (on average 1.6193021947101858) internal successors, (11510), 7109 states have internal predecessors, (11510), 800 states have call successors, (800), 1 states have call predecessors, (800), 1 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800) Second operand  has 6 states, 5 states have (on average 541.8) internal successors, (2709), 6 states have internal predecessors, (2709), 2 states have call successors, (800), 1 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:55:19,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:55:19,545 INFO  L93              Difference]: Finished difference Result 15819 states and 27021 transitions.
[2024-11-28 03:55:19,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:55:19,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 541.8) internal successors, (2709), 6 states have internal predecessors, (2709), 2 states have call successors, (800), 1 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800) Word has length 6703
[2024-11-28 03:55:19,577 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:55:19,639 INFO  L225             Difference]: With dead ends: 15819
[2024-11-28 03:55:19,639 INFO  L226             Difference]: Without dead ends: 7910
[2024-11-28 03:55:19,666 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6708 GetRequests, 6702 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 03:55:19,670 INFO  L435           NwaCegarLoop]: 12302 mSDtfsCounter, 1 mSDsluCounter, 47595 mSDsCounter, 0 mSdLazyCounter, 5629 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59897 SdHoareTripleChecker+Invalid, 5630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2024-11-28 03:55:19,671 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59897 Invalid, 5630 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 5629 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2024-11-28 03:55:19,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7910 states.
[2024-11-28 03:55:20,852 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 7910.
[2024-11-28 03:55:20,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7910 states, 7108 states have (on average 1.6190208216094542) internal successors, (11508), 7108 states have internal predecessors, (11508), 800 states have call successors, (800), 1 states have call predecessors, (800), 1 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800)
[2024-11-28 03:55:20,915 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 13108 transitions.
[2024-11-28 03:55:20,924 INFO  L78                 Accepts]: Start accepts. Automaton has 7910 states and 13108 transitions. Word has length 6703
[2024-11-28 03:55:20,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:55:20,946 INFO  L471      AbstractCegarLoop]: Abstraction has 7910 states and 13108 transitions.
[2024-11-28 03:55:20,949 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 541.8) internal successors, (2709), 6 states have internal predecessors, (2709), 2 states have call successors, (800), 1 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:55:20,949 INFO  L276                IsEmpty]: Start isEmpty. Operand 7910 states and 13108 transitions.
[2024-11-28 03:55:21,609 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6705
[2024-11-28 03:55:21,617 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:55:21,625 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:55:21,711 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-28 03:55:21,826 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-28 03:55:21,829 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:55:21,832 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:55:21,839 INFO  L85        PathProgramCache]: Analyzing trace with hash -673547190, now seen corresponding path program 1 times
[2024-11-28 03:55:21,839 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:55:21,843 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663647344]
[2024-11-28 03:55:21,845 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:55:21,845 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:55:23,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:55:40,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 1800 proven. 597 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:55:40,082 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:55:40,084 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663647344]
[2024-11-28 03:55:40,084 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663647344] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:55:40,086 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808876042]
[2024-11-28 03:55:40,092 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:55:40,093 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:55:40,093 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:55:40,098 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:55:40,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 03:55:43,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:55:43,946 INFO  L256         TraceCheckSpWp]: Trace formula consists of 14629 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:55:44,108 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:55:44,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 3196 proven. 0 refuted. 0 times theorem prover too weak. 1275204 trivial. 0 not checked.
[2024-11-28 03:55:44,501 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:55:44,501 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808876042] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:55:44,501 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:55:44,503 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:55:44,503 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016557223]
[2024-11-28 03:55:44,503 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:55:44,514 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:55:44,514 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:55:44,519 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:55:44,520 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:55:44,527 INFO  L87              Difference]: Start difference. First operand 7910 states and 13108 transitions. Second operand  has 3 states, 3 states have (on average 903.3333333333334) internal successors, (2710), 3 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:55:44,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:55:44,791 INFO  L93              Difference]: Finished difference Result 7924 states and 13125 transitions.
[2024-11-28 03:55:44,791 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:55:44,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 903.3333333333334) internal successors, (2710), 3 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800) Word has length 6704
[2024-11-28 03:55:44,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:55:44,852 INFO  L225             Difference]: With dead ends: 7924
[2024-11-28 03:55:44,852 INFO  L226             Difference]: Without dead ends: 7911
[2024-11-28 03:55:44,857 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6709 GetRequests, 6704 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 03:55:44,858 INFO  L435           NwaCegarLoop]: 13105 mSDtfsCounter, 0 mSDsluCounter, 13096 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26201 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 03:55:44,859 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26201 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:55:44,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7911 states.
[2024-11-28 03:55:45,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 7911.
[2024-11-28 03:55:45,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7911 states, 7109 states have (on average 1.6189337459558306) internal successors, (11509), 7109 states have internal predecessors, (11509), 800 states have call successors, (800), 1 states have call predecessors, (800), 1 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800)
[2024-11-28 03:55:45,754 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 13109 transitions.
[2024-11-28 03:55:45,759 INFO  L78                 Accepts]: Start accepts. Automaton has 7911 states and 13109 transitions. Word has length 6704
[2024-11-28 03:55:45,771 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:55:45,771 INFO  L471      AbstractCegarLoop]: Abstraction has 7911 states and 13109 transitions.
[2024-11-28 03:55:45,774 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 903.3333333333334) internal successors, (2710), 3 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:55:45,774 INFO  L276                IsEmpty]: Start isEmpty. Operand 7911 states and 13109 transitions.
[2024-11-28 03:55:46,608 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6705
[2024-11-28 03:55:46,609 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:55:46,612 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:55:46,653 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-28 03:55:46,815 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:55:46,815 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:55:46,817 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:55:46,830 INFO  L85        PathProgramCache]: Analyzing trace with hash 756375920, now seen corresponding path program 1 times
[2024-11-28 03:55:46,830 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:55:46,830 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411059568]
[2024-11-28 03:55:46,834 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:55:46,834 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:55:47,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:04,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 1800 proven. 597 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:56:04,720 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:56:04,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411059568]
[2024-11-28 03:56:04,720 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411059568] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:56:04,720 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291681590]
[2024-11-28 03:56:04,722 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:56:04,723 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:56:04,723 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:56:04,726 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:56:04,730 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 03:56:08,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:08,228 INFO  L256         TraceCheckSpWp]: Trace formula consists of 14629 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:56:08,294 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:56:08,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 3196 proven. 0 refuted. 0 times theorem prover too weak. 1275204 trivial. 0 not checked.
[2024-11-28 03:56:08,632 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:56:08,632 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [291681590] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:56:08,633 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:56:08,634 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:56:08,634 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966520301]
[2024-11-28 03:56:08,635 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:56:08,641 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:56:08,641 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:56:08,645 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:56:08,645 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:56:08,647 INFO  L87              Difference]: Start difference. First operand 7911 states and 13109 transitions. Second operand  has 4 states, 4 states have (on average 677.5) internal successors, (2710), 4 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:56:08,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:56:08,925 INFO  L93              Difference]: Finished difference Result 7943 states and 13153 transitions.
[2024-11-28 03:56:08,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:56:08,927 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 677.5) internal successors, (2710), 4 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800) Word has length 6704
[2024-11-28 03:56:08,940 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:56:08,988 INFO  L225             Difference]: With dead ends: 7943
[2024-11-28 03:56:08,989 INFO  L226             Difference]: Without dead ends: 7920
[2024-11-28 03:56:08,994 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6709 GetRequests, 6703 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 03:56:08,996 INFO  L435           NwaCegarLoop]: 13102 mSDtfsCounter, 9 mSDsluCounter, 26191 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39293 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 03:56:08,997 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 39293 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:56:09,013 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7920 states.
[2024-11-28 03:56:09,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7920.
[2024-11-28 03:56:09,703 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7920 states, 7118 states have (on average 1.6185726327620118) internal successors, (11521), 7118 states have internal predecessors, (11521), 800 states have call successors, (800), 1 states have call predecessors, (800), 1 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800)
[2024-11-28 03:56:09,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7920 states to 7920 states and 13121 transitions.
[2024-11-28 03:56:09,736 INFO  L78                 Accepts]: Start accepts. Automaton has 7920 states and 13121 transitions. Word has length 6704
[2024-11-28 03:56:09,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:56:09,754 INFO  L471      AbstractCegarLoop]: Abstraction has 7920 states and 13121 transitions.
[2024-11-28 03:56:09,755 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 677.5) internal successors, (2710), 4 states have internal predecessors, (2710), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:56:09,755 INFO  L276                IsEmpty]: Start isEmpty. Operand 7920 states and 13121 transitions.
[2024-11-28 03:56:10,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6706
[2024-11-28 03:56:10,284 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:56:10,287 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:56:10,323 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-28 03:56:10,488 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:56:10,489 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:56:10,490 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:56:10,493 INFO  L85        PathProgramCache]: Analyzing trace with hash 1215515084, now seen corresponding path program 1 times
[2024-11-28 03:56:10,494 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:56:10,494 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686962099]
[2024-11-28 03:56:10,495 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:56:10,496 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:56:11,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:25,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 1800 proven. 597 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:56:25,483 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:56:25,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686962099]
[2024-11-28 03:56:25,483 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686962099] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:56:25,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195597280]
[2024-11-28 03:56:25,485 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:56:25,486 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:56:25,486 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:56:25,488 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:56:25,489 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-28 03:56:29,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:29,249 INFO  L256         TraceCheckSpWp]: Trace formula consists of 14632 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:56:29,305 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:56:40,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 3196 proven. 0 refuted. 0 times theorem prover too weak. 1275204 trivial. 0 not checked.
[2024-11-28 03:56:40,230 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:56:40,230 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [195597280] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:56:40,230 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:56:40,231 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:56:40,232 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902414292]
[2024-11-28 03:56:40,232 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:56:40,236 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:56:40,236 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:56:40,240 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:56:40,241 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:56:40,242 INFO  L87              Difference]: Start difference. First operand 7920 states and 13121 transitions. Second operand  has 3 states, 3 states have (on average 903.6666666666666) internal successors, (2711), 3 states have internal predecessors, (2711), 3 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 3 states have call predecessors, (800), 3 states have call successors, (800)
[2024-11-28 03:56:40,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:56:40,653 INFO  L93              Difference]: Finished difference Result 21891 states and 36263 transitions.
[2024-11-28 03:56:40,654 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:56:40,655 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 903.6666666666666) internal successors, (2711), 3 states have internal predecessors, (2711), 3 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 3 states have call predecessors, (800), 3 states have call successors, (800) Word has length 6705
[2024-11-28 03:56:40,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:56:40,724 INFO  L225             Difference]: With dead ends: 21891
[2024-11-28 03:56:40,725 INFO  L226             Difference]: Without dead ends: 14897
[2024-11-28 03:56:40,739 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6710 GetRequests, 6705 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 03:56:40,741 INFO  L435           NwaCegarLoop]: 18126 mSDtfsCounter, 8786 mSDsluCounter, 13149 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8786 SdHoareTripleChecker+Valid, 31275 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:56:40,743 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8786 Valid, 31275 Invalid, 57 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 03:56:40,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14897 states.
[2024-11-28 03:56:41,750 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 14897.
[2024-11-28 03:56:41,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14897 states, 13896 states have (on average 1.632412204951065) internal successors, (22684), 13896 states have internal predecessors, (22684), 999 states have call successors, (999), 1 states have call predecessors, (999), 1 states have return successors, (999), 999 states have call predecessors, (999), 999 states have call successors, (999)
[2024-11-28 03:56:41,807 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14897 states to 14897 states and 24682 transitions.
[2024-11-28 03:56:41,811 INFO  L78                 Accepts]: Start accepts. Automaton has 14897 states and 24682 transitions. Word has length 6705
[2024-11-28 03:56:41,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:56:41,822 INFO  L471      AbstractCegarLoop]: Abstraction has 14897 states and 24682 transitions.
[2024-11-28 03:56:41,824 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 903.6666666666666) internal successors, (2711), 3 states have internal predecessors, (2711), 3 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 3 states have call predecessors, (800), 3 states have call successors, (800)
[2024-11-28 03:56:41,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 14897 states and 24682 transitions.
[2024-11-28 03:56:42,266 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6706
[2024-11-28 03:56:42,266 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:56:42,269 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:56:42,306 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-28 03:56:42,470 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:56:42,470 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:56:42,472 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:56:42,475 INFO  L85        PathProgramCache]: Analyzing trace with hash 1291709912, now seen corresponding path program 1 times
[2024-11-28 03:56:42,475 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:56:42,475 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157809567]
[2024-11-28 03:56:42,477 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:56:42,477 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:56:43,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:55,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 1800 proven. 597 refuted. 0 times theorem prover too weak. 1276003 trivial. 0 not checked.
[2024-11-28 03:56:55,445 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:56:55,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157809567]
[2024-11-28 03:56:55,446 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157809567] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:56:55,446 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282158472]
[2024-11-28 03:56:55,448 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:56:55,448 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:56:55,448 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:56:55,450 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:56:55,451 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-28 03:56:58,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:56:58,575 INFO  L256         TraceCheckSpWp]: Trace formula consists of 14632 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:56:58,614 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:56:58,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 1278400 backedges. 3196 proven. 0 refuted. 0 times theorem prover too weak. 1275204 trivial. 0 not checked.
[2024-11-28 03:56:58,745 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:56:58,745 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [282158472] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:56:58,745 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:56:58,746 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:56:58,746 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804140129]
[2024-11-28 03:56:58,746 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:56:58,749 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:56:58,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:56:58,753 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:56:58,754 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:56:58,755 INFO  L87              Difference]: Start difference. First operand 14897 states and 24682 transitions. Second operand  has 4 states, 4 states have (on average 677.75) internal successors, (2711), 4 states have internal predecessors, (2711), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:56:59,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:56:59,151 INFO  L93              Difference]: Finished difference Result 14965 states and 24783 transitions.
[2024-11-28 03:56:59,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:56:59,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 677.75) internal successors, (2711), 4 states have internal predecessors, (2711), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800) Word has length 6705
[2024-11-28 03:56:59,164 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:56:59,200 INFO  L225             Difference]: With dead ends: 14965
[2024-11-28 03:56:59,201 INFO  L226             Difference]: Without dead ends: 14914
[2024-11-28 03:56:59,206 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 6710 GetRequests, 6704 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 03:56:59,207 INFO  L435           NwaCegarLoop]: 13102 mSDtfsCounter, 9 mSDsluCounter, 26191 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39293 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 03:56:59,208 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 39293 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:56:59,225 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14914 states.
[2024-11-28 03:57:00,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14914 to 14914.
[2024-11-28 03:57:00,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14914 states, 13913 states have (on average 1.6322144756702364) internal successors, (22709), 13913 states have internal predecessors, (22709), 999 states have call successors, (999), 1 states have call predecessors, (999), 1 states have return successors, (999), 999 states have call predecessors, (999), 999 states have call successors, (999)
[2024-11-28 03:57:00,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14914 states to 14914 states and 24707 transitions.
[2024-11-28 03:57:00,099 INFO  L78                 Accepts]: Start accepts. Automaton has 14914 states and 24707 transitions. Word has length 6705
[2024-11-28 03:57:00,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:57:00,111 INFO  L471      AbstractCegarLoop]: Abstraction has 14914 states and 24707 transitions.
[2024-11-28 03:57:00,112 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 677.75) internal successors, (2711), 4 states have internal predecessors, (2711), 2 states have call successors, (800), 2 states have call predecessors, (800), 2 states have return successors, (800), 2 states have call predecessors, (800), 2 states have call successors, (800)
[2024-11-28 03:57:00,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 14914 states and 24707 transitions.
[2024-11-28 03:57:00,667 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6706
[2024-11-28 03:57:00,668 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:57:00,671 INFO  L218           NwaCegarLoop]: trace histogram [800, 800, 800, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-28 03:57:00,709 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-28 03:57:00,871 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4153edd-d50b-4d85-b356-a4373721f55d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:57:00,871 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:57:00,873 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:57:00,877 INFO  L85        PathProgramCache]: Analyzing trace with hash -2019161166, now seen corresponding path program 1 times
[2024-11-28 03:57:00,877 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:57:00,877 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529926296]
[2024-11-28 03:57:00,879 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:57:00,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:57:01,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat