./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i --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_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/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_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/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_c78886b2-0d7b-4673-b811-a76973ded922/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 3bdeae46dbc756a421cd87ce74cf66692dd63be4319bd9b008f470e9866099a9
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-11-28 04:22:25,989 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-28 04:22:26,079 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-28 04:22:26,087 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-28 04:22:26,087 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-28 04:22:26,122 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-28 04:22:26,127 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-28 04:22:26,127 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-28 04:22:26,127 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-28 04:22:26,127 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-28 04:22:26,127 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-28 04:22:26,128 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-28 04:22:26,128 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-28 04:22:26,128 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-28 04:22:26,129 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-28 04:22:26,132 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-28 04:22:26,132 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-28 04:22:26,132 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 04:22:26,132 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:22:26,133 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:22:26,133 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2024-11-28 04:22:26,133 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-28 04:22:26,134 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-28 04:22:26,134 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_c78886b2-0d7b-4673-b811-a76973ded922/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 -> 3bdeae46dbc756a421cd87ce74cf66692dd63be4319bd9b008f470e9866099a9
[2024-11-28 04:22:26,454 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-28 04:22:26,464 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-28 04:22:26,466 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-28 04:22:26,468 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-28 04:22:26,468 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-28 04:22:26,469 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i
[2024-11-28 04:22:29,459 INFO  L533              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/data/d45c84a0d/c68d1ebc969e40cb9f68efd476116313/FLAG6b646fbb0
[2024-11-28 04:22:29,721 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-28 04:22:29,732 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i
[2024-11-28 04:22:29,753 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/data/d45c84a0d/c68d1ebc969e40cb9f68efd476116313/FLAG6b646fbb0
[2024-11-28 04:22:30,027 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/data/d45c84a0d/c68d1ebc969e40cb9f68efd476116313
[2024-11-28 04:22:30,029 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-28 04:22:30,033 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-28 04:22:30,035 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-28 04:22:30,036 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-28 04:22:30,045 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-28 04:22:30,049 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,050 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7695da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30, skipping insertion in model container
[2024-11-28 04:22:30,051 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,069 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-28 04:22:30,223 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_c78886b2-0d7b-4673-b811-a76973ded922/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i[873,886]
[2024-11-28 04:22:30,236 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 04:22:30,245 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-28 04:22:30,256 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_c78886b2-0d7b-4673-b811-a76973ded922/sv-benchmarks/c/loop-zilu/benchmark37_conjunctive.i[873,886]
[2024-11-28 04:22:30,259 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-28 04:22:30,273 INFO  L204         MainTranslator]: Completed translation
[2024-11-28 04:22:30,274 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30 WrapperNode
[2024-11-28 04:22:30,274 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-28 04:22:30,275 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-28 04:22:30,275 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-28 04:22:30,275 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-28 04:22:30,286 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,296 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,314 INFO  L138                Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34
[2024-11-28 04:22:30,314 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-28 04:22:30,316 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-28 04:22:30,316 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-28 04:22:30,316 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-28 04:22:30,325 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,325 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,327 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,342 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 04:22:30,346 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,346 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,348 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,350 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,356 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,357 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,357 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,359 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-28 04:22:30,359 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-28 04:22:30,359 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-28 04:22:30,360 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-28 04:22:30,361 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (1/1) ...
[2024-11-28 04:22:30,367 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-28 04:22:30,382 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 04:22:30,396 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-28 04:22:30,399 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-28 04:22:30,423 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-28 04:22:30,423 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-28 04:22:30,423 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-28 04:22:30,423 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-28 04:22:30,489 INFO  L234             CfgBuilder]: Building ICFG
[2024-11-28 04:22:30,492 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-28 04:22:30,631 INFO  L?                        ?]: Removed 9 outVars from TransFormulas that were not future-live.
[2024-11-28 04:22:30,631 INFO  L283             CfgBuilder]: Performing block encoding
[2024-11-28 04:22:30,644 INFO  L307             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-28 04:22:30,644 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-28 04:22:30,645 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:30 BoogieIcfgContainer
[2024-11-28 04:22:30,645 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-28 04:22:30,649 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-28 04:22:30,649 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-28 04:22:30,654 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-28 04:22:30,654 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:22:30" (1/3) ...
[2024-11-28 04:22:30,655 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2f36f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:30, skipping insertion in model container
[2024-11-28 04:22:30,655 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:30" (2/3) ...
[2024-11-28 04:22:30,656 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2f36f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:30, skipping insertion in model container
[2024-11-28 04:22:30,656 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:30" (3/3) ...
[2024-11-28 04:22:30,657 INFO  L128   eAbstractionObserver]: Analyzing ICFG benchmark37_conjunctive.i
[2024-11-28 04:22:30,675 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-28 04:22:30,678 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG benchmark37_conjunctive.i that has 1 procedures, 13 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2024-11-28 04:22:30,747 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-28 04:22:30,764 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;@e8e2545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-28 04:22:30,764 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-28 04:22:30,768 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:30,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-28 04:22:30,774 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:22:30,775 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:22:30,776 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:22:30,782 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:22:30,782 INFO  L85        PathProgramCache]: Analyzing trace with hash 1807120263, now seen corresponding path program 1 times
[2024-11-28 04:22:30,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:22:30,791 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954475353]
[2024-11-28 04:22:30,791 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:22:30,792 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:22:30,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:22:30,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:22:30,954 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:22:30,955 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954475353]
[2024-11-28 04:22:30,956 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954475353] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 04:22:30,957 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 04:22:30,957 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-28 04:22:30,960 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058674033]
[2024-11-28 04:22:30,961 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 04:22:30,966 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-28 04:22:30,966 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:22:30,989 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-28 04:22:30,990 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-28 04:22:30,992 INFO  L87              Difference]: Start difference. First operand  has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:22:31,004 INFO  L93              Difference]: Finished difference Result 21 states and 24 transitions.
[2024-11-28 04:22:31,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-28 04:22:31,010 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-28 04:22:31,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:22:31,018 INFO  L225             Difference]: With dead ends: 21
[2024-11-28 04:22:31,019 INFO  L226             Difference]: Without dead ends: 9
[2024-11-28 04:22:31,021 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 04:22:31,024 INFO  L435           NwaCegarLoop]: 14 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, 14 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 04:22:31,025 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 04:22:31,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2024-11-28 04:22:31,052 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2024-11-28 04:22:31,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-28 04:22:31,061 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2024-11-28 04:22:31,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:22:31,061 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-28 04:22:31,062 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-28 04:22:31,062 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2024-11-28 04:22:31,062 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:22:31,062 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:22:31,063 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-28 04:22:31,063 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:22:31,063 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:22:31,063 INFO  L85        PathProgramCache]: Analyzing trace with hash 1807001099, now seen corresponding path program 1 times
[2024-11-28 04:22:31,066 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:22:31,066 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762581199]
[2024-11-28 04:22:31,066 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:22:31,066 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:22:31,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:22:31,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:22:31,281 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:22:31,281 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762581199]
[2024-11-28 04:22:31,281 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762581199] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-28 04:22:31,281 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-28 04:22:31,281 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-28 04:22:31,281 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395526801]
[2024-11-28 04:22:31,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-28 04:22:31,283 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-28 04:22:31,283 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:22:31,283 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-28 04:22:31,284 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:22:31,284 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:22:31,304 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-28 04:22:31,304 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-28 04:22:31,304 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2024-11-28 04:22:31,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:22:31,305 INFO  L225             Difference]: With dead ends: 15
[2024-11-28 04:22:31,305 INFO  L226             Difference]: Without dead ends: 11
[2024-11-28 04:22:31,305 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-28 04:22:31,306 INFO  L435           NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 04:22:31,307 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 04:22:31,308 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2024-11-28 04:22:31,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10.
[2024-11-28 04:22:31,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2024-11-28 04:22:31,310 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7
[2024-11-28 04:22:31,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:22:31,310 INFO  L471      AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2024-11-28 04:22:31,311 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2024-11-28 04:22:31,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-11-28 04:22:31,311 INFO  L210           NwaCegarLoop]: Found error trace
[2024-11-28 04:22:31,311 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-28 04:22:31,311 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-28 04:22:31,312 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-28 04:22:31,312 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-28 04:22:31,312 INFO  L85        PathProgramCache]: Analyzing trace with hash 1300044975, now seen corresponding path program 1 times
[2024-11-28 04:22:31,312 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-28 04:22:31,312 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513695283]
[2024-11-28 04:22:31,312 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:22:31,313 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-28 04:22:31,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:22:31,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:22:31,437 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-28 04:22:31,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513695283]
[2024-11-28 04:22:31,437 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513695283] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-28 04:22:31,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414409119]
[2024-11-28 04:22:31,437 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-28 04:22:31,437 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 04:22:31,437 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3
[2024-11-28 04:22:31,440 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-28 04:22:31,450 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-28 04:22:31,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-28 04:22:31,494 INFO  L256         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-28 04:22:31,499 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2024-11-28 04:22:31,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:22:31,570 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2024-11-28 04:22:31,684 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-28 04:22:31,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [414409119] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-28 04:22:31,685 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-28 04:22:31,685 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8
[2024-11-28 04:22:31,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323798902]
[2024-11-28 04:22:31,685 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-28 04:22:31,686 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-28 04:22:31,686 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-28 04:22:31,686 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-28 04:22:31,688 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-28 04:22:31,688 INFO  L87              Difference]: Start difference. First operand 10 states and 10 transitions. Second operand  has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-28 04:22:31,762 INFO  L93              Difference]: Finished difference Result 10 states and 10 transitions.
[2024-11-28 04:22:31,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-28 04:22:31,762 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2024-11-28 04:22:31,762 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-28 04:22:31,762 INFO  L225             Difference]: With dead ends: 10
[2024-11-28 04:22:31,762 INFO  L226             Difference]: Without dead ends: 0
[2024-11-28 04:22:31,763 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2024-11-28 04:22:31,764 INFO  L435           NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-28 04:22:31,764 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-28 04:22:31,765 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-11-28 04:22:31,765 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-11-28 04:22:31,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,765 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-11-28 04:22:31,765 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9
[2024-11-28 04:22:31,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-28 04:22:31,767 INFO  L471      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-11-28 04:22:31,767 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-28 04:22:31,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-11-28 04:22:31,768 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2024-11-28 04:22:31,771 INFO  L782   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-28 04:22:31,780 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-28 04:22:31,971 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-28 04:22:31,974 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2024-11-28 04:22:31,975 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-11-28 04:22:31,996 INFO  L170   ceAbstractionStarter]: Computing trace abstraction results
[2024-11-28 04:22:32,008 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:22:32 BoogieIcfgContainer
[2024-11-28 04:22:32,008 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-28 04:22:32,009 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-28 04:22:32,009 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2024-11-28 04:22:32,009 INFO  L274        PluginConnector]: Witness Printer initialized
[2024-11-28 04:22:32,010 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:30" (3/4) ...
[2024-11-28 04:22:32,012 INFO  L146         WitnessPrinter]: Generating witness for correct program
[2024-11-28 04:22:32,019 INFO  L919   BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2024-11-28 04:22:32,019 INFO  L919   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2024-11-28 04:22:32,019 INFO  L919   BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2024-11-28 04:22:32,019 INFO  L919   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-11-28 04:22:32,089 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml
[2024-11-28 04:22:32,090 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml
[2024-11-28 04:22:32,090 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-28 04:22:32,090 INFO  L158              Benchmark]: Toolchain (without parser) took 2057.22ms. Allocated memory is still 142.6MB. Free memory was 119.6MB in the beginning and 103.3MB in the end (delta: 16.3MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB.
[2024-11-28 04:22:32,091 INFO  L158              Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-28 04:22:32,091 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 239.25ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-28 04:22:32,091 INFO  L158              Benchmark]: Boogie Procedure Inliner took 40.33ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 107.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-28 04:22:32,092 INFO  L158              Benchmark]: Boogie Preprocessor took 43.06ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-28 04:22:32,092 INFO  L158              Benchmark]: RCFGBuilder took 285.44ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 96.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-28 04:22:32,094 INFO  L158              Benchmark]: TraceAbstraction took 1359.86ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 107.7MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-28 04:22:32,094 INFO  L158              Benchmark]: Witness Printer took 80.60ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 103.3MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-28 04:22:32,096 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 239.25ms. Allocated memory is still 142.6MB. Free memory was 119.4MB in the beginning and 108.5MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 40.33ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 107.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
 * Boogie Preprocessor took 43.06ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 285.44ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 96.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1359.86ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 107.7MB in the end (delta: -11.6MB). There was no memory consumed. Max. memory is 16.1GB.
 * Witness Printer took 80.60ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 103.3MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 16]: a call to reach_error is unreachable
    For all program executions holds that a call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 24 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 3 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 23]: Loop Invariant
    Derived loop invariant: ((x <= y) && (0 <= y))
RESULT: Ultimate proved your program to be correct!
[2024-11-28 04:22:32,123 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c78886b2-0d7b-4673-b811-a76973ded922/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE