./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-060.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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-060.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/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 6c6c6bcdd72ea020631275d05f53f3a85eefff832aea60657c8517ea7b38d6be
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 03:02:57,040 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 03:02:57,159 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 03:02:57,165 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 03:02:57,165 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 03:02:57,211 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 03:02:57,213 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 03:02:57,213 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 03:02:57,214 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 03:02:57,214 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 03:02:57,215 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 03:02:57,216 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 03:02:57,216 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 03:02:57,216 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 03:02:57,216 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 03:02:57,217 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 03:02:57,217 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 03:02:57,218 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 03:02:57,218 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 03:02:57,218 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 03:02:57,219 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 03:02:57,220 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:02:57,220 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:02:57,221 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:02:57,221 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:02:57,221 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 03:02:57,221 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 03:02:57,221 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 03:02:57,221 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 03:02:57,222 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:02:57,222 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 03:02:57,222 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 03:02:57,222 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 03:02:57,222 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 03:02:57,222 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 03:02:57,223 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 03:02:57,223 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 03:02:57,223 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 03:02:57,223 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 03:02:57,224 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 03:02:57,224 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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/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 -> 6c6c6bcdd72ea020631275d05f53f3a85eefff832aea60657c8517ea7b38d6be
[2024-11-28 03:02:57,579 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 03:02:57,595 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 03:02:57,599 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 03:02:57,601 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 03:02:57,602 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 03:02:57,604 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/Dubois-060.c
[2024-11-28 03:03:01,301 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/data/e0741849c/8829bf5ba5fe408a9757c60016904bde/FLAGf248513a0
[2024-11-28 03:03:01,702 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 03:03:01,703 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/sv-benchmarks/c/xcsp/Dubois-060.c
[2024-11-28 03:03:01,719 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/data/e0741849c/8829bf5ba5fe408a9757c60016904bde/FLAGf248513a0
[2024-11-28 03:03:01,738 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/data/e0741849c/8829bf5ba5fe408a9757c60016904bde
[2024-11-28 03:03:01,741 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 03:03:01,743 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 03:03:01,745 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 03:03:01,745 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 03:03:01,751 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 03:03:01,752 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:01" (1/1) ...
[2024-11-28 03:03:01,753 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b34fc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:01, skipping insertion in model container
[2024-11-28 03:03:01,753 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:01" (1/1) ...
[2024-11-28 03:03:01,824 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 03:03:02,625 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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/sv-benchmarks/c/xcsp/Dubois-060.c[42720,42733]
[2024-11-28 03:03:02,666 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:03:02,682 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 03:03:02,966 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_a0e88952-76f8-4378-b32e-3d7a7baf93ec/sv-benchmarks/c/xcsp/Dubois-060.c[42720,42733]
[2024-11-28 03:03:02,995 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 03:03:03,067 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 03:03:03,069 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03 WrapperNode
[2024-11-28 03:03:03,069 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 03:03:03,070 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 03:03:03,071 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 03:03:03,071 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 03:03:03,085 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:03,202 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,223 INFO  L138                Inliner]: procedures = 13, calls = 487, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11956
[2024-11-28 03:03:04,224 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 03:03:04,225 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 03:03:04,226 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 03:03:04,226 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 03:03:04,236 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,236 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,336 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,488 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 03:03:04,489 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,489 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,731 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,752 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,859 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,949 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:04,990 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:05,271 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 03:03:05,272 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 03:03:05,272 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 03:03:05,273 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 03:03:05,274 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ...
[2024-11-28 03:03:05,281 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 03:03:05,298 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:03:05,315 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 03:03:05,322 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 03:03:05,358 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 03:03:05,358 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 03:03:05,358 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 03:03:05,358 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 03:03:05,359 INFO  L130     BoogieDeclarations]: Found specification of procedure assume
[2024-11-28 03:03:05,359 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume
[2024-11-28 03:03:05,910 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 03:03:05,912 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 03:03:25,265 INFO  L?                        ?]: Removed 4145 outVars from TransFormulas that were not future-live.
[2024-11-28 03:03:25,266 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 03:03:25,401 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 03:03:25,402 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-28 03:03:25,402 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:25 BoogieIcfgContainer
[2024-11-28 03:03:25,402 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 03:03:25,410 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 03:03:25,410 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 03:03:25,416 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 03:03:25,418 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:01" (1/3) ...
[2024-11-28 03:03:25,420 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b0187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:25, skipping insertion in model container
[2024-11-28 03:03:25,420 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (2/3) ...
[2024-11-28 03:03:25,420 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668b0187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:25, skipping insertion in model container
[2024-11-28 03:03:25,421 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:25" (3/3) ...
[2024-11-28 03:03:25,422 INFO  L128   eAbstractionObserver]: Analyzing ICFG Dubois-060.c
[2024-11-28 03:03:25,444 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 03:03:25,447 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-060.c that has 2 procedures, 4751 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-11-28 03:03:25,634 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 03:03:25,650 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;@5f7a8062, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 03:03:25,651 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 03:03:25,670 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4751 states, 4268 states have (on average 1.6190253045923149) internal successors, (6910), 4269 states have internal predecessors, (6910), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:03:26,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4024
[2024-11-28 03:03:26,039 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:03:26,041 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:26,042 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:03:26,053 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:03:26,055 INFO  L85        PathProgramCache]: Analyzing trace with hash -1215258338, now seen corresponding path program 1 times
[2024-11-28 03:03:26,068 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:03:26,068 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535283581]
[2024-11-28 03:03:26,070 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:03:26,071 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:03:26,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:03:33,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 0 proven. 958 refuted. 0 times theorem prover too weak. 458882 trivial. 0 not checked.
[2024-11-28 03:03:33,470 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:03:33,471 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535283581]
[2024-11-28 03:03:33,472 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535283581] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:03:33,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049989335]
[2024-11-28 03:03:33,474 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:03:33,474 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:03:33,475 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:03:33,481 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:03:33,483 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 03:03:36,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:03:36,484 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8786 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-28 03:03:36,655 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:03:37,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 958 proven. 0 refuted. 0 times theorem prover too weak. 458882 trivial. 0 not checked.
[2024-11-28 03:03:37,085 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:03:37,086 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049989335] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:03:37,086 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:03:37,088 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-28 03:03:37,090 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087480193]
[2024-11-28 03:03:37,091 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:03:37,110 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-28 03:03:37,111 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:03:37,150 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-28 03:03:37,151 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 03:03:37,168 INFO  L87              Difference]: Start difference. First operand  has 4751 states, 4268 states have (on average 1.6190253045923149) internal successors, (6910), 4269 states have internal predecessors, (6910), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480) Second operand  has 2 states, 2 states have (on average 814.0) internal successors, (1628), 2 states have internal predecessors, (1628), 2 states have call successors, (480), 2 states have call predecessors, (480), 1 states have return successors, (480), 1 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:03:37,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:03:37,641 INFO  L93              Difference]: Finished difference Result 9496 states and 16214 transitions.
[2024-11-28 03:03:37,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-28 03:03:37,647 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 814.0) internal successors, (1628), 2 states have internal predecessors, (1628), 2 states have call successors, (480), 2 states have call predecessors, (480), 1 states have return successors, (480), 1 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4023
[2024-11-28 03:03:37,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:03:37,712 INFO  L225             Difference]: With dead ends: 9496
[2024-11-28 03:03:37,713 INFO  L226             Difference]: Without dead ends: 4748
[2024-11-28 03:03:37,742 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4024 GetRequests, 4024 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 03:03:37,746 INFO  L435           NwaCegarLoop]: 7866 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7866 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 03:03:37,747 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7866 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:03:37,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4748 states.
[2024-11-28 03:03:38,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4748.
[2024-11-28 03:03:38,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4748 states, 4266 states have (on average 1.6188466947960618) internal successors, (6906), 4266 states have internal predecessors, (6906), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:03:38,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 7866 transitions.
[2024-11-28 03:03:38,504 INFO  L78                 Accepts]: Start accepts. Automaton has 4748 states and 7866 transitions. Word has length 4023
[2024-11-28 03:03:38,507 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:03:38,507 INFO  L471      AbstractCegarLoop]: Abstraction has 4748 states and 7866 transitions.
[2024-11-28 03:03:38,509 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 814.0) internal successors, (1628), 2 states have internal predecessors, (1628), 2 states have call successors, (480), 2 states have call predecessors, (480), 1 states have return successors, (480), 1 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:03:38,509 INFO  L276                IsEmpty]: Start isEmpty. Operand 4748 states and 7866 transitions.
[2024-11-28 03:03:38,793 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4024
[2024-11-28 03:03:38,793 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:03:38,795 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:38,813 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-28 03:03:38,996 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-11-28 03:03:38,996 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:03:38,998 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:03:39,000 INFO  L85        PathProgramCache]: Analyzing trace with hash 651767838, now seen corresponding path program 1 times
[2024-11-28 03:03:39,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:03:39,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506091025]
[2024-11-28 03:03:39,002 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:03:39,002 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:03:39,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:03:51,964 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:03:51,965 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:03:51,965 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506091025]
[2024-11-28 03:03:51,965 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506091025] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:03:51,966 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242356457]
[2024-11-28 03:03:51,967 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:03:51,967 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:03:51,968 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:03:51,970 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:03:51,975 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-28 03:03:54,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:03:54,635 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8786 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:03:54,738 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:03:55,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1437 proven. 0 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:03:55,182 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:03:55,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242356457] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:03:55,182 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:03:55,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:03:55,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654779828]
[2024-11-28 03:03:55,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:03:55,194 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:03:55,194 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:03:55,200 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:03:55,200 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:03:55,203 INFO  L87              Difference]: Start difference. First operand 4748 states and 7866 transitions. Second operand  has 6 states, 5 states have (on average 325.8) internal successors, (1629), 6 states have internal predecessors, (1629), 2 states have call successors, (480), 1 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:03:59,831 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:03:59,831 INFO  L93              Difference]: Finished difference Result 4760 states and 7880 transitions.
[2024-11-28 03:03:59,832 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:03:59,834 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 325.8) internal successors, (1629), 6 states have internal predecessors, (1629), 2 states have call successors, (480), 1 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4023
[2024-11-28 03:03:59,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:03:59,902 INFO  L225             Difference]: With dead ends: 4760
[2024-11-28 03:03:59,902 INFO  L226             Difference]: Without dead ends: 4750
[2024-11-28 03:03:59,906 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4028 GetRequests, 4022 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 03:03:59,907 INFO  L435           NwaCegarLoop]: 7382 mSDtfsCounter, 1 mSDsluCounter, 28555 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35937 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:03:59,908 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35937 Invalid, 3390 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2024-11-28 03:03:59,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4750 states.
[2024-11-28 03:04:00,436 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 4750.
[2024-11-28 03:04:00,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4750 states, 4268 states have (on average 1.6185567010309279) internal successors, (6908), 4268 states have internal predecessors, (6908), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:04:00,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 7868 transitions.
[2024-11-28 03:04:00,497 INFO  L78                 Accepts]: Start accepts. Automaton has 4750 states and 7868 transitions. Word has length 4023
[2024-11-28 03:04:00,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:00,520 INFO  L471      AbstractCegarLoop]: Abstraction has 4750 states and 7868 transitions.
[2024-11-28 03:04:00,523 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 325.8) internal successors, (1629), 6 states have internal predecessors, (1629), 2 states have call successors, (480), 1 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:00,524 INFO  L276                IsEmpty]: Start isEmpty. Operand 4750 states and 7868 transitions.
[2024-11-28 03:04:00,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4025
[2024-11-28 03:04:00,839 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:00,843 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:00,870 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-28 03:04:01,044 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2024-11-28 03:04:01,045 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:01,047 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:01,050 INFO  L85        PathProgramCache]: Analyzing trace with hash -1794010116, now seen corresponding path program 1 times
[2024-11-28 03:04:01,051 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:01,051 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840555743]
[2024-11-28 03:04:01,052 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:01,052 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:01,558 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:08,247 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:04:08,247 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:04:08,247 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840555743]
[2024-11-28 03:04:08,247 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840555743] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:04:08,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068666130]
[2024-11-28 03:04:08,249 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:08,249 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:08,249 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:04:08,252 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:04:08,256 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-28 03:04:10,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:10,321 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8789 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:04:10,377 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:04:10,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:04:10,596 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:04:10,596 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068666130] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:04:10,596 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:04:10,597 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:04:10,597 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175587769]
[2024-11-28 03:04:10,598 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:04:10,603 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:04:10,603 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:04:10,606 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:04:10,607 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:04:10,608 INFO  L87              Difference]: Start difference. First operand 4750 states and 7868 transitions. Second operand  has 4 states, 4 states have (on average 407.5) internal successors, (1630), 4 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:10,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:04:10,857 INFO  L93              Difference]: Finished difference Result 4780 states and 7910 transitions.
[2024-11-28 03:04:10,858 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:04:10,859 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 407.5) internal successors, (1630), 4 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4024
[2024-11-28 03:04:10,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:04:10,894 INFO  L225             Difference]: With dead ends: 4780
[2024-11-28 03:04:10,894 INFO  L226             Difference]: Without dead ends: 4759
[2024-11-28 03:04:10,897 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4029 GetRequests, 4023 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 03:04:10,901 INFO  L435           NwaCegarLoop]: 7862 mSDtfsCounter, 9 mSDsluCounter, 15711 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23573 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 03:04:10,901 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23573 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:04:10,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4759 states.
[2024-11-28 03:04:11,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 4759.
[2024-11-28 03:04:11,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4759 states, 4277 states have (on average 1.61819032031798) internal successors, (6921), 4277 states have internal predecessors, (6921), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:04:11,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 7881 transitions.
[2024-11-28 03:04:11,254 INFO  L78                 Accepts]: Start accepts. Automaton has 4759 states and 7881 transitions. Word has length 4024
[2024-11-28 03:04:11,266 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:11,267 INFO  L471      AbstractCegarLoop]: Abstraction has 4759 states and 7881 transitions.
[2024-11-28 03:04:11,268 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 407.5) internal successors, (1630), 4 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:11,268 INFO  L276                IsEmpty]: Start isEmpty. Operand 4759 states and 7881 transitions.
[2024-11-28 03:04:11,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4025
[2024-11-28 03:04:11,506 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:11,508 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:11,535 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-28 03:04:11,709 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:11,710 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:11,710 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:11,712 INFO  L85        PathProgramCache]: Analyzing trace with hash 1071034070, now seen corresponding path program 1 times
[2024-11-28 03:04:11,712 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:11,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839427290]
[2024-11-28 03:04:11,716 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:11,716 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:12,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:18,817 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:04:18,818 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:04:18,818 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839427290]
[2024-11-28 03:04:18,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839427290] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:04:18,818 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692389785]
[2024-11-28 03:04:18,819 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:18,819 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:18,820 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:04:18,822 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:04:18,826 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-28 03:04:20,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:20,824 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8789 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:04:20,857 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:04:21,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:04:21,007 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:04:21,007 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692389785] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:04:21,007 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:04:21,008 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:04:21,008 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268906739]
[2024-11-28 03:04:21,008 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:04:21,012 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:04:21,012 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:04:21,015 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:04:21,015 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:04:21,016 INFO  L87              Difference]: Start difference. First operand 4759 states and 7881 transitions. Second operand  has 3 states, 3 states have (on average 543.3333333333334) internal successors, (1630), 3 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:21,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:04:21,150 INFO  L93              Difference]: Finished difference Result 4777 states and 7903 transitions.
[2024-11-28 03:04:21,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:04:21,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 543.3333333333334) internal successors, (1630), 3 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4024
[2024-11-28 03:04:21,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:04:21,186 INFO  L225             Difference]: With dead ends: 4777
[2024-11-28 03:04:21,186 INFO  L226             Difference]: Without dead ends: 4760
[2024-11-28 03:04:21,189 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4029 GetRequests, 4024 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 03:04:21,190 INFO  L435           NwaCegarLoop]: 7865 mSDtfsCounter, 0 mSDsluCounter, 7856 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15721 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 03:04:21,190 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15721 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:04:21,201 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4760 states.
[2024-11-28 03:04:21,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4760.
[2024-11-28 03:04:21,592 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4760 states, 4278 states have (on average 1.61781206171108) internal successors, (6921), 4278 states have internal predecessors, (6921), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:04:21,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 7881 transitions.
[2024-11-28 03:04:21,620 INFO  L78                 Accepts]: Start accepts. Automaton has 4760 states and 7881 transitions. Word has length 4024
[2024-11-28 03:04:21,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:21,632 INFO  L471      AbstractCegarLoop]: Abstraction has 4760 states and 7881 transitions.
[2024-11-28 03:04:21,633 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 543.3333333333334) internal successors, (1630), 3 states have internal predecessors, (1630), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:21,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 4760 states and 7881 transitions.
[2024-11-28 03:04:21,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4026
[2024-11-28 03:04:21,884 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:21,886 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:21,908 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-28 03:04:22,086 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:22,087 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:22,088 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:22,089 INFO  L85        PathProgramCache]: Analyzing trace with hash 1493006212, now seen corresponding path program 1 times
[2024-11-28 03:04:22,090 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:22,090 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076622660]
[2024-11-28 03:04:22,091 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:22,091 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:22,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:28,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:04:28,134 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:04:28,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076622660]
[2024-11-28 03:04:28,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076622660] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:04:28,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912000183]
[2024-11-28 03:04:28,135 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:28,135 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:28,135 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:04:28,137 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:04:28,139 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-28 03:04:29,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:29,917 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8792 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-28 03:04:29,951 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:04:30,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:04:30,218 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:04:30,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912000183] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:04:30,218 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:04:30,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2024-11-28 03:04:30,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936063994]
[2024-11-28 03:04:30,219 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:04:30,223 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 03:04:30,223 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:04:30,226 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 03:04:30,226 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:04:30,227 INFO  L87              Difference]: Start difference. First operand 4760 states and 7881 transitions. Second operand  has 4 states, 4 states have (on average 407.75) internal successors, (1631), 4 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:30,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:04:30,391 INFO  L93              Difference]: Finished difference Result 4809 states and 7952 transitions.
[2024-11-28 03:04:30,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 03:04:30,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 407.75) internal successors, (1631), 4 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4025
[2024-11-28 03:04:30,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:04:30,430 INFO  L225             Difference]: With dead ends: 4809
[2024-11-28 03:04:30,430 INFO  L226             Difference]: Without dead ends: 4770
[2024-11-28 03:04:30,433 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4030 GetRequests, 4024 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 03:04:30,436 INFO  L435           NwaCegarLoop]: 7862 mSDtfsCounter, 9 mSDsluCounter, 15711 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23573 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 03:04:30,438 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 23573 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:04:30,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4770 states.
[2024-11-28 03:04:30,688 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4770 to 4770.
[2024-11-28 03:04:30,696 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4770 states, 4288 states have (on average 1.617537313432836) internal successors, (6936), 4288 states have internal predecessors, (6936), 480 states have call successors, (480), 1 states have call predecessors, (480), 1 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480)
[2024-11-28 03:04:30,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7896 transitions.
[2024-11-28 03:04:30,715 INFO  L78                 Accepts]: Start accepts. Automaton has 4770 states and 7896 transitions. Word has length 4025
[2024-11-28 03:04:30,722 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:30,722 INFO  L471      AbstractCegarLoop]: Abstraction has 4770 states and 7896 transitions.
[2024-11-28 03:04:30,723 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 407.75) internal successors, (1631), 4 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:30,723 INFO  L276                IsEmpty]: Start isEmpty. Operand 4770 states and 7896 transitions.
[2024-11-28 03:04:30,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4026
[2024-11-28 03:04:30,892 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:30,893 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:30,917 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-28 03:04:31,094 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:31,095 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:31,096 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:31,097 INFO  L85        PathProgramCache]: Analyzing trace with hash 1416811384, now seen corresponding path program 1 times
[2024-11-28 03:04:31,097 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:31,098 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866081831]
[2024-11-28 03:04:31,098 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:31,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:31,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:37,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:04:37,004 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:04:37,004 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866081831]
[2024-11-28 03:04:37,004 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866081831] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:04:37,004 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631598366]
[2024-11-28 03:04:37,005 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:37,005 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:37,005 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:04:37,007 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:04:37,009 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-28 03:04:39,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:39,071 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8792 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:04:39,106 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:04:45,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:04:45,707 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:04:45,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631598366] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:04:45,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:04:45,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:04:45,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257173383]
[2024-11-28 03:04:45,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:04:45,713 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:04:45,713 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:04:45,716 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:04:45,716 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:04:45,718 INFO  L87              Difference]: Start difference. First operand 4770 states and 7896 transitions. Second operand  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:04:46,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:04:46,016 INFO  L93              Difference]: Finished difference Result 13159 states and 21785 transitions.
[2024-11-28 03:04:46,017 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:04:46,018 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480) Word has length 4025
[2024-11-28 03:04:46,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:04:46,059 INFO  L225             Difference]: With dead ends: 13159
[2024-11-28 03:04:46,059 INFO  L226             Difference]: Without dead ends: 8954
[2024-11-28 03:04:46,069 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4030 GetRequests, 4025 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 03:04:46,070 INFO  L435           NwaCegarLoop]: 11170 mSDtfsCounter, 5269 mSDsluCounter, 7880 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5269 SdHoareTripleChecker+Valid, 19050 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-28 03:04:46,070 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [5269 Valid, 19050 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 03:04:46,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8954 states.
[2024-11-28 03:04:46,581 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 8954.
[2024-11-28 03:04:46,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8954 states, 8353 states have (on average 1.631629354722854) internal successors, (13629), 8353 states have internal predecessors, (13629), 599 states have call successors, (599), 1 states have call predecessors, (599), 1 states have return successors, (599), 599 states have call predecessors, (599), 599 states have call successors, (599)
[2024-11-28 03:04:46,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8954 states to 8954 states and 14827 transitions.
[2024-11-28 03:04:46,622 INFO  L78                 Accepts]: Start accepts. Automaton has 8954 states and 14827 transitions. Word has length 4025
[2024-11-28 03:04:46,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:46,627 INFO  L471      AbstractCegarLoop]: Abstraction has 8954 states and 14827 transitions.
[2024-11-28 03:04:46,627 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:04:46,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 8954 states and 14827 transitions.
[2024-11-28 03:04:46,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4026
[2024-11-28 03:04:46,760 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:46,762 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:46,787 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-11-28 03:04:46,962 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:46,963 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:46,964 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:46,966 INFO  L85        PathProgramCache]: Analyzing trace with hash -1817864866, now seen corresponding path program 1 times
[2024-11-28 03:04:46,967 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:46,967 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788017521]
[2024-11-28 03:04:46,969 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:46,969 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:47,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:53,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:04:53,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:04:53,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788017521]
[2024-11-28 03:04:53,503 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788017521] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:04:53,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832077229]
[2024-11-28 03:04:53,504 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:53,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:53,504 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:04:53,506 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:04:53,508 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-28 03:04:55,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:04:55,351 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8792 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:04:55,379 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:04:55,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:04:55,538 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:04:55,539 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832077229] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:04:55,539 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:04:55,540 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:04:55,540 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771677271]
[2024-11-28 03:04:55,540 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:04:55,544 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:04:55,544 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:04:55,547 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:04:55,548 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:04:55,550 INFO  L87              Difference]: Start difference. First operand 8954 states and 14827 transitions. Second operand  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:55,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:04:55,682 INFO  L93              Difference]: Finished difference Result 8985 states and 14868 transitions.
[2024-11-28 03:04:55,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:04:55,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4025
[2024-11-28 03:04:55,689 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:04:55,715 INFO  L225             Difference]: With dead ends: 8985
[2024-11-28 03:04:55,716 INFO  L226             Difference]: Without dead ends: 8947
[2024-11-28 03:04:55,720 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4030 GetRequests, 4025 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 03:04:55,722 INFO  L435           NwaCegarLoop]: 7865 mSDtfsCounter, 0 mSDsluCounter, 7856 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15721 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 03:04:55,723 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15721 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:04:55,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8947 states.
[2024-11-28 03:04:56,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 8947.
[2024-11-28 03:04:56,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8947 states, 8346 states have (on average 1.631320393002636) internal successors, (13615), 8346 states have internal predecessors, (13615), 599 states have call successors, (599), 1 states have call predecessors, (599), 1 states have return successors, (599), 599 states have call predecessors, (599), 599 states have call successors, (599)
[2024-11-28 03:04:56,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8947 states to 8947 states and 14813 transitions.
[2024-11-28 03:04:56,170 INFO  L78                 Accepts]: Start accepts. Automaton has 8947 states and 14813 transitions. Word has length 4025
[2024-11-28 03:04:56,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:04:56,175 INFO  L471      AbstractCegarLoop]: Abstraction has 8947 states and 14813 transitions.
[2024-11-28 03:04:56,176 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 543.6666666666666) internal successors, (1631), 3 states have internal predecessors, (1631), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:04:56,176 INFO  L276                IsEmpty]: Start isEmpty. Operand 8947 states and 14813 transitions.
[2024-11-28 03:04:56,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2024-11-28 03:04:56,368 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:04:56,370 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:04:56,394 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-28 03:04:56,571 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:04:56,571 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:04:56,572 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:04:56,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -1690489220, now seen corresponding path program 1 times
[2024-11-28 03:04:56,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:04:56,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498985954]
[2024-11-28 03:04:56,575 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:04:56,575 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:04:56,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:02,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:05:02,227 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:05:02,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498985954]
[2024-11-28 03:05:02,228 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498985954] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:05:02,228 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524278815]
[2024-11-28 03:05:02,229 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:02,229 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:05:02,229 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:05:02,233 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:05:02,235 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-28 03:05:03,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:04,021 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8795 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:05:04,051 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:05:04,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:05:04,134 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:05:04,135 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524278815] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:05:04,135 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:05:04,135 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:05:04,135 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679348704]
[2024-11-28 03:05:04,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:05:04,139 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:05:04,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:05:04,142 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:05:04,142 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:05:04,143 INFO  L87              Difference]: Start difference. First operand 8947 states and 14813 transitions. Second operand  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:05:04,273 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:05:04,273 INFO  L93              Difference]: Finished difference Result 8997 states and 14882 transitions.
[2024-11-28 03:05:04,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:05:04,275 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4026
[2024-11-28 03:05:04,281 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:05:04,308 INFO  L225             Difference]: With dead ends: 8997
[2024-11-28 03:05:04,308 INFO  L226             Difference]: Without dead ends: 8943
[2024-11-28 03:05:04,313 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4031 GetRequests, 4026 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 03:05:04,313 INFO  L435           NwaCegarLoop]: 7865 mSDtfsCounter, 0 mSDsluCounter, 7856 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15721 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 03:05:04,314 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15721 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:05:04,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8943 states.
[2024-11-28 03:05:04,709 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8943 to 8943.
[2024-11-28 03:05:04,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8943 states, 8342 states have (on average 1.6311436106449293) internal successors, (13607), 8342 states have internal predecessors, (13607), 599 states have call successors, (599), 1 states have call predecessors, (599), 1 states have return successors, (599), 599 states have call predecessors, (599), 599 states have call successors, (599)
[2024-11-28 03:05:04,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 14805 transitions.
[2024-11-28 03:05:04,750 INFO  L78                 Accepts]: Start accepts. Automaton has 8943 states and 14805 transitions. Word has length 4026
[2024-11-28 03:05:04,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:05:04,755 INFO  L471      AbstractCegarLoop]: Abstraction has 8943 states and 14805 transitions.
[2024-11-28 03:05:04,756 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:05:04,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 8943 states and 14805 transitions.
[2024-11-28 03:05:04,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2024-11-28 03:05:04,987 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:05:04,989 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2024-11-28 03:05:05,012 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-28 03:05:05,189 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:05:05,190 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:05:05,191 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:05:05,193 INFO  L85        PathProgramCache]: Analyzing trace with hash -1733701738, now seen corresponding path program 1 times
[2024-11-28 03:05:05,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:05:05,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513907680]
[2024-11-28 03:05:05,194 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:05,194 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:05:05,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:10,972 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:05:10,972 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:05:10,972 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513907680]
[2024-11-28 03:05:10,972 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513907680] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:05:10,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654321773]
[2024-11-28 03:05:10,974 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:10,974 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:05:10,974 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:05:10,976 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:05:10,979 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-28 03:05:12,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:12,885 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8795 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:05:12,916 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:05:19,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:05:19,746 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:05:19,746 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [654321773] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:05:19,746 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:05:19,747 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:05:19,747 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510477721]
[2024-11-28 03:05:19,747 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:05:19,749 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:05:19,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:05:19,752 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:05:19,753 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:05:19,754 INFO  L87              Difference]: Start difference. First operand 8943 states and 14805 transitions. Second operand  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:05:20,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:05:20,083 INFO  L93              Difference]: Finished difference Result 17307 states and 28645 transitions.
[2024-11-28 03:05:20,084 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:05:20,085 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480) Word has length 4026
[2024-11-28 03:05:20,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:05:20,132 INFO  L225             Difference]: With dead ends: 17307
[2024-11-28 03:05:20,132 INFO  L226             Difference]: Without dead ends: 13110
[2024-11-28 03:05:20,143 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4031 GetRequests, 4026 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 03:05:20,144 INFO  L435           NwaCegarLoop]: 10120 mSDtfsCounter, 5269 mSDsluCounter, 7856 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5269 SdHoareTripleChecker+Valid, 17976 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 03:05:20,145 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [5269 Valid, 17976 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-28 03:05:20,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13110 states.
[2024-11-28 03:05:20,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13097.
[2024-11-28 03:05:20,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13097 states, 12377 states have (on average 1.635856831219197) internal successors, (20247), 12377 states have internal predecessors, (20247), 718 states have call successors, (718), 1 states have call predecessors, (718), 1 states have return successors, (718), 718 states have call predecessors, (718), 718 states have call successors, (718)
[2024-11-28 03:05:20,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13097 states to 13097 states and 21683 transitions.
[2024-11-28 03:05:20,817 INFO  L78                 Accepts]: Start accepts. Automaton has 13097 states and 21683 transitions. Word has length 4026
[2024-11-28 03:05:20,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:05:20,822 INFO  L471      AbstractCegarLoop]: Abstraction has 13097 states and 21683 transitions.
[2024-11-28 03:05:20,823 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 3 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 3 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:05:20,823 INFO  L276                IsEmpty]: Start isEmpty. Operand 13097 states and 21683 transitions.
[2024-11-28 03:05:20,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2024-11-28 03:05:20,972 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:05:20,974 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:21,000 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-28 03:05:21,175 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2024-11-28 03:05:21,176 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:05:21,177 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:05:21,179 INFO  L85        PathProgramCache]: Analyzing trace with hash 1340837282, now seen corresponding path program 1 times
[2024-11-28 03:05:21,179 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:05:21,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905216696]
[2024-11-28 03:05:21,180 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:21,180 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:05:21,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:27,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:05:27,694 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:05:27,695 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905216696]
[2024-11-28 03:05:27,695 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905216696] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:05:27,695 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859344912]
[2024-11-28 03:05:27,695 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:27,696 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:05:27,696 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:05:27,698 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:05:27,700 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-28 03:05:29,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:29,742 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8795 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-28 03:05:29,771 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:05:30,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 457924 trivial. 0 not checked.
[2024-11-28 03:05:30,019 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:05:30,019 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [859344912] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:05:30,019 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:05:30,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2024-11-28 03:05:30,020 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878005401]
[2024-11-28 03:05:30,020 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:05:30,024 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-28 03:05:30,024 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:05:30,027 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-28 03:05:30,028 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-11-28 03:05:30,029 INFO  L87              Difference]: Start difference. First operand 13097 states and 21683 transitions. Second operand  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:05:30,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:05:30,199 INFO  L93              Difference]: Finished difference Result 13162 states and 21772 transitions.
[2024-11-28 03:05:30,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-28 03:05:30,200 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480) Word has length 4026
[2024-11-28 03:05:30,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:05:30,246 INFO  L225             Difference]: With dead ends: 13162
[2024-11-28 03:05:30,246 INFO  L226             Difference]: Without dead ends: 13110
[2024-11-28 03:05:30,252 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4031 GetRequests, 4026 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 03:05:30,253 INFO  L435           NwaCegarLoop]: 7865 mSDtfsCounter, 8 mSDsluCounter, 7857 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15722 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 03:05:30,253 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15722 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 03:05:30,267 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13110 states.
[2024-11-28 03:05:30,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110.
[2024-11-28 03:05:30,850 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13110 states, 12390 states have (on average 1.6355125100887813) internal successors, (20264), 12390 states have internal predecessors, (20264), 718 states have call successors, (718), 1 states have call predecessors, (718), 1 states have return successors, (718), 718 states have call predecessors, (718), 718 states have call successors, (718)
[2024-11-28 03:05:30,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 21700 transitions.
[2024-11-28 03:05:30,885 INFO  L78                 Accepts]: Start accepts. Automaton has 13110 states and 21700 transitions. Word has length 4026
[2024-11-28 03:05:30,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:05:30,890 INFO  L471      AbstractCegarLoop]: Abstraction has 13110 states and 21700 transitions.
[2024-11-28 03:05:30,891 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 544.0) internal successors, (1632), 3 states have internal predecessors, (1632), 2 states have call successors, (480), 2 states have call predecessors, (480), 2 states have return successors, (480), 2 states have call predecessors, (480), 2 states have call successors, (480)
[2024-11-28 03:05:30,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 13110 states and 21700 transitions.
[2024-11-28 03:05:31,137 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4027
[2024-11-28 03:05:31,137 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:05:31,140 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:31,166 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-28 03:05:31,340 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-11-28 03:05:31,341 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:05:31,343 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:05:31,344 INFO  L85        PathProgramCache]: Analyzing trace with hash -1965089924, now seen corresponding path program 1 times
[2024-11-28 03:05:31,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:05:31,345 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079098450]
[2024-11-28 03:05:31,345 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:31,346 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:05:31,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:38,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 1080 proven. 357 refuted. 0 times theorem prover too weak. 458403 trivial. 0 not checked.
[2024-11-28 03:05:38,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 03:05:38,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079098450]
[2024-11-28 03:05:38,066 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079098450] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 03:05:38,066 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126758650]
[2024-11-28 03:05:38,067 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:38,067 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 03:05:38,067 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 03:05:38,071 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 03:05:38,076 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-28 03:05:40,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 03:05:40,398 INFO  L256         TraceCheckSpWp]: Trace formula consists of 8795 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-28 03:05:40,427 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 03:05:40,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 459840 backedges. 3350 proven. 0 refuted. 0 times theorem prover too weak. 456490 trivial. 0 not checked.
[2024-11-28 03:05:40,523 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-28 03:05:40,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126758650] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 03:05:40,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-28 03:05:40,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-28 03:05:40,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242089919]
[2024-11-28 03:05:40,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 03:05:40,527 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-28 03:05:40,527 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 03:05:40,530 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-28 03:05:40,530 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2024-11-28 03:05:40,532 INFO  L87              Difference]: Start difference. First operand 13110 states and 21700 transitions. Second operand  has 6 states, 5 states have (on average 327.0) internal successors, (1635), 6 states have internal predecessors, (1635), 3 states have call successors, (480), 2 states have call predecessors, (480), 3 states have return successors, (480), 2 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:05:44,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 03:05:44,023 INFO  L93              Difference]: Finished difference Result 13230 states and 21872 transitions.
[2024-11-28 03:05:44,023 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 03:05:44,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 327.0) internal successors, (1635), 6 states have internal predecessors, (1635), 3 states have call successors, (480), 2 states have call predecessors, (480), 3 states have return successors, (480), 2 states have call predecessors, (480), 3 states have call successors, (480) Word has length 4026
[2024-11-28 03:05:44,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 03:05:44,063 INFO  L225             Difference]: With dead ends: 13230
[2024-11-28 03:05:44,063 INFO  L226             Difference]: Without dead ends: 13116
[2024-11-28 03:05:44,067 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4031 GetRequests, 4025 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 03:05:44,068 INFO  L435           NwaCegarLoop]: 7382 mSDtfsCounter, 1 mSDsluCounter, 28555 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35937 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time
[2024-11-28 03:05:44,068 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35937 Invalid, 3390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time]
[2024-11-28 03:05:44,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13116 states.
[2024-11-28 03:05:44,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 13116.
[2024-11-28 03:05:44,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13116 states, 12396 states have (on average 1.6352049048080026) internal successors, (20270), 12396 states have internal predecessors, (20270), 718 states have call successors, (718), 1 states have call predecessors, (718), 1 states have return successors, (718), 718 states have call predecessors, (718), 718 states have call successors, (718)
[2024-11-28 03:05:44,589 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 21706 transitions.
[2024-11-28 03:05:44,599 INFO  L78                 Accepts]: Start accepts. Automaton has 13116 states and 21706 transitions. Word has length 4026
[2024-11-28 03:05:44,604 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 03:05:44,605 INFO  L471      AbstractCegarLoop]: Abstraction has 13116 states and 21706 transitions.
[2024-11-28 03:05:44,606 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 327.0) internal successors, (1635), 6 states have internal predecessors, (1635), 3 states have call successors, (480), 2 states have call predecessors, (480), 3 states have return successors, (480), 2 states have call predecessors, (480), 3 states have call successors, (480)
[2024-11-28 03:05:44,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 13116 states and 21706 transitions.
[2024-11-28 03:05:44,887 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4028
[2024-11-28 03:05:44,887 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 03:05:44,889 INFO  L218           NwaCegarLoop]: trace histogram [480, 480, 480, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:44,917 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2024-11-28 03:05:45,090 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e88952-76f8-4378-b32e-3d7a7baf93ec/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-11-28 03:05:45,091 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 03:05:45,092 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 03:05:45,093 INFO  L85        PathProgramCache]: Analyzing trace with hash -61808604, now seen corresponding path program 1 times
[2024-11-28 03:05:45,094 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 03:05:45,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791828715]
[2024-11-28 03:05:45,095 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 03:05:45,095 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 03:05:45,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat