./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version c00e63dc
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-c00e63d-m
[2025-02-05 16:22:27,375 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-02-05 16:22:27,409 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-02-05 16:22:27,413 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-02-05 16:22:27,413 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-02-05 16:22:27,434 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-02-05 16:22:27,435 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-02-05 16:22:27,436 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-02-05 16:22:27,436 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-02-05 16:22:27,436 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-02-05 16:22:27,437 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-02-05 16:22:27,437 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-02-05 16:22:27,437 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-02-05 16:22:27,437 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-02-05 16:22:27,438 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-02-05 16:22:27,438 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-02-05 16:22:27,439 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-02-05 16:22:27,439 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-02-05 16:22:27,440 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-02-05 16:22:27,440 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-02-05 16:22:27,441 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-02-05 16:22:27,441 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux
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 -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104
[2025-02-05 16:22:27,625 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-02-05 16:22:27,637 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-02-05 16:22:27,640 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-02-05 16:22:27,641 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-02-05 16:22:27,641 INFO  L274        PluginConnector]: CDTParser initialized
[2025-02-05 16:22:27,642 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2025-02-05 16:22:28,869 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eccd98bc5/708298a1167143f4a1c61b1b28a5b5f5/FLAG9a386a786
[2025-02-05 16:22:29,417 INFO  L384              CDTParser]: Found 1 translation units.
[2025-02-05 16:22:29,418 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2025-02-05 16:22:29,456 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eccd98bc5/708298a1167143f4a1c61b1b28a5b5f5/FLAG9a386a786
[2025-02-05 16:22:29,467 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eccd98bc5/708298a1167143f4a1c61b1b28a5b5f5
[2025-02-05 16:22:29,469 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-02-05 16:22:29,470 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-02-05 16:22:29,471 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-02-05 16:22:29,471 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-02-05 16:22:29,474 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-02-05 16:22:29,475 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:22:29" (1/1) ...
[2025-02-05 16:22:29,475 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237cd493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:29, skipping insertion in model container
[2025-02-05 16:22:29,475 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:22:29" (1/1) ...
[2025-02-05 16:22:29,578 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-02-05 16:22:29,751 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686]
[2025-02-05 16:22:30,605 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-02-05 16:22:30,624 INFO  L200         MainTranslator]: Completed pre-run
[2025-02-05 16:22:30,630 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42]
[2025-02-05 16:22:30,635 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686]
[2025-02-05 16:22:31,266 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-02-05 16:22:31,299 INFO  L204         MainTranslator]: Completed translation
[2025-02-05 16:22:31,301 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31 WrapperNode
[2025-02-05 16:22:31,301 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-02-05 16:22:31,302 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-02-05 16:22:31,302 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-02-05 16:22:31,302 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-02-05 16:22:31,307 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:31,499 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:32,771 INFO  L138                Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40479
[2025-02-05 16:22:32,771 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-02-05 16:22:32,775 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-02-05 16:22:32,775 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-02-05 16:22:32,775 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-02-05 16:22:32,782 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:32,782 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:33,137 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:33,333 INFO  L175           MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [2, 8, 2784, 3812, 2, 2400, 1676, 1252, 852, 326, 429, 325, 429, 8, 2, 7, 4]. 27 percent of accesses are in the largest equivalence class. The 652 initializations are split as follows [2, 0, 96, 96, 0, 8, 8, 4, 4, 108, 108, 108, 108, 0, 0, 2, 0]. The 661 writes are split as follows [0, 4, 96, 96, 1, 8, 8, 4, 4, 109, 107, 109, 107, 4, 1, 3, 0].
[2025-02-05 16:22:33,334 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:33,334 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:33,904 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:33,957 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:34,076 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:34,146 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:34,320 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-02-05 16:22:34,322 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-02-05 16:22:34,322 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-02-05 16:22:34,322 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-02-05 16:22:34,323 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (1/1) ...
[2025-02-05 16:22:34,327 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-02-05 16:22:34,337 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-02-05 16:22:34,348 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2025-02-05 16:22:34,461 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2025-02-05 16:22:34,477 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-02-05 16:22:34,478 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t2
[2025-02-05 16:22:34,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2
[2025-02-05 16:22:34,478 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode
[2025-02-05 16:22:34,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode
[2025-02-05 16:22:34,478 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2025-02-05 16:22:34,478 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t0
[2025-02-05 16:22:34,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t1
[2025-02-05 16:22:34,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag
[2025-02-05 16:22:34,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2025-02-05 16:22:34,479 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2025-02-05 16:22:34,480 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#6
[2025-02-05 16:22:34,480 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#7
[2025-02-05 16:22:34,480 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#8
[2025-02-05 16:22:34,480 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#9
[2025-02-05 16:22:34,480 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#10
[2025-02-05 16:22:34,481 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#11
[2025-02-05 16:22:34,481 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#12
[2025-02-05 16:22:34,481 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#13
[2025-02-05 16:22:34,481 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#14
[2025-02-05 16:22:34,482 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#15
[2025-02-05 16:22:34,482 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#16
[2025-02-05 16:22:34,482 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_count
[2025-02-05 16:22:34,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor
[2025-02-05 16:22:34,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-02-05 16:22:34,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-02-05 16:22:34,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-02-05 16:22:34,483 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2025-02-05 16:22:34,483 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2025-02-05 16:22:34,484 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#6
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#7
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#8
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#9
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#10
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#11
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#12
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#13
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#14
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#15
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#16
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed
[2025-02-05 16:22:34,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2025-02-05 16:22:34,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#6
[2025-02-05 16:22:34,485 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#7
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#8
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#9
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#10
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#11
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#12
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#13
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#14
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#15
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#16
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-02-05 16:22:34,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms
[2025-02-05 16:22:34,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_get_count
[2025-02-05 16:22:34,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count
[2025-02-05 16:22:34,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode
[2025-02-05 16:22:34,486 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode
[2025-02-05 16:22:35,801 INFO  L257             CfgBuilder]: Building ICFG
[2025-02-05 16:22:35,803 INFO  L287             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-02-05 16:22:36,163 INFO  L1309  $ProcedureCfgBuilder]: dead code at ProgramPoint L209: call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset);havoc OSEK_Task_ts1_~#pwm_l~0#1.base, OSEK_Task_ts1_~#pwm_l~0#1.offset;call ULTIMATE.dealloc(OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset);havoc OSEK_Task_ts1_~#pwm_r~0#1.base, OSEK_Task_ts1_~#pwm_r~0#1.offset;
[2025-02-05 16:22:36,163 INFO  L1309  $ProcedureCfgBuilder]: dead code at ProgramPoint L82: call ULTIMATE.dealloc(balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset);havoc balance_control_~#tmp~0#1.base, balance_control_~#tmp~0#1.offset;call ULTIMATE.dealloc(balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset);havoc balance_control_~#tmp_theta_0~0#1.base, balance_control_~#tmp_theta_0~0#1.offset;
[2025-02-05 16:23:00,191 INFO  L?                        ?]: Removed 272 outVars from TransFormulas that were not future-live.
[2025-02-05 16:23:00,191 INFO  L308             CfgBuilder]: Performing block encoding
[2025-02-05 16:23:00,360 INFO  L332             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-02-05 16:23:00,361 INFO  L337             CfgBuilder]: Removed 0 assume(true) statements.
[2025-02-05 16:23:00,361 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:23:00 BoogieIcfgContainer
[2025-02-05 16:23:00,361 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-02-05 16:23:00,363 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-02-05 16:23:00,363 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-02-05 16:23:00,367 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-02-05 16:23:00,368 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:22:29" (1/3) ...
[2025-02-05 16:23:00,369 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc925b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:23:00, skipping insertion in model container
[2025-02-05 16:23:00,369 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:22:31" (2/3) ...
[2025-02-05 16:23:00,370 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbc925b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:23:00, skipping insertion in model container
[2025-02-05 16:23:00,370 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:23:00" (3/3) ...
[2025-02-05 16:23:00,371 INFO  L128   eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c
[2025-02-05 16:23:00,386 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-02-05 16:23:00,389 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M4-1.c that has 16 procedures, 12012 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-02-05 16:23:00,633 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-02-05 16:23:00,646 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;@4f7f13b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-02-05 16:23:00,646 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-02-05 16:23:00,698 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12012 states, 7877 states have (on average 1.3195378951377428) internal successors, (10394), 7990 states have internal predecessors, (10394), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118)
[2025-02-05 16:23:01,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-02-05 16:23:01,019 INFO  L210           NwaCegarLoop]: Found error trace
[2025-02-05 16:23:01,022 INFO  L218           NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-02-05 16:23:01,023 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-02-05 16:23:01,028 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-02-05 16:23:01,029 INFO  L85        PathProgramCache]: Analyzing trace with hash 718632136, now seen corresponding path program 1 times
[2025-02-05 16:23:01,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-02-05 16:23:01,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679281327]
[2025-02-05 16:23:01,037 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-02-05 16:23:01,037 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-02-05 16:23:11,571 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-02-05 16:23:11,747 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-02-05 16:23:11,747 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-02-05 16:23:11,747 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-02-05 16:23:15,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2025-02-05 16:23:15,109 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-02-05 16:23:15,109 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679281327]
[2025-02-05 16:23:15,109 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679281327] provided 0 perfect and 1 imperfect interpolant sequences
[2025-02-05 16:23:15,110 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323680397]
[2025-02-05 16:23:15,111 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-02-05 16:23:15,111 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-02-05 16:23:15,111 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2025-02-05 16:23:15,113 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-02-05 16:23:15,118 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-02-05 16:23:26,133 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-02-05 16:23:27,661 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-02-05 16:23:27,661 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-02-05 16:23:27,661 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-02-05 16:23:27,745 INFO  L256         TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core
[2025-02-05 16:23:27,950 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-02-05 16:23:28,123 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2025-02-05 16:23:28,123 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-02-05 16:23:28,124 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [323680397] provided 1 perfect and 0 imperfect interpolant sequences
[2025-02-05 16:23:28,124 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-02-05 16:23:28,125 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2025-02-05 16:23:28,128 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775293318]
[2025-02-05 16:23:28,129 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-02-05 16:23:28,138 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-02-05 16:23:28,138 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-02-05 16:23:28,158 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-02-05 16:23:28,158 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-02-05 16:23:28,195 INFO  L87              Difference]: Start difference. First operand  has 12012 states, 7877 states have (on average 1.3195378951377428) internal successors, (10394), 7990 states have internal predecessors, (10394), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) Second operand  has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337)
[2025-02-05 16:23:28,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-02-05 16:23:28,634 INFO  L93              Difference]: Finished difference Result 24019 states and 41356 transitions.
[2025-02-05 16:23:28,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-02-05 16:23:28,640 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337) Word has length 4616
[2025-02-05 16:23:28,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-02-05 16:23:28,733 INFO  L225             Difference]: With dead ends: 24019
[2025-02-05 16:23:28,734 INFO  L226             Difference]: Without dead ends: 12006
[2025-02-05 16:23:28,800 INFO  L434           NwaCegarLoop]: 0 DeclaredPredicates, 4617 GetRequests, 4617 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-02-05 16:23:28,803 INFO  L435           NwaCegarLoop]: 18628 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, 18628 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
[2025-02-05 16:23:28,805 INFO  L436           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18628 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-02-05 16:23:28,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12006 states.
[2025-02-05 16:23:36,966 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 12006.
[2025-02-05 16:23:37,003 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12006 states, 7872 states have (on average 1.3192327235772359) internal successors, (10385), 7984 states have internal predecessors, (10385), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118)
[2025-02-05 16:23:37,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 18621 transitions.
[2025-02-05 16:23:37,086 INFO  L78                 Accepts]: Start accepts. Automaton has 12006 states and 18621 transitions. Word has length 4616
[2025-02-05 16:23:37,089 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-02-05 16:23:37,089 INFO  L471      AbstractCegarLoop]: Abstraction has 12006 states and 18621 transitions.
[2025-02-05 16:23:37,091 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 1468.0) internal successors, (2936), 2 states have internal predecessors, (2936), 2 states have call successors, (337), 2 states have call predecessors, (337), 1 states have return successors, (337), 1 states have call predecessors, (337), 2 states have call successors, (337)
[2025-02-05 16:23:37,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 12006 states and 18621 transitions.
[2025-02-05 16:23:37,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-02-05 16:23:37,841 INFO  L210           NwaCegarLoop]: Found error trace
[2025-02-05 16:23:37,843 INFO  L218           NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2025-02-05 16:23:37,913 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-02-05 16:23:38,048 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2025-02-05 16:23:38,048 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-02-05 16:23:38,050 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-02-05 16:23:38,052 INFO  L85        PathProgramCache]: Analyzing trace with hash -1672899069, now seen corresponding path program 1 times
[2025-02-05 16:23:38,052 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-02-05 16:23:38,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279426311]
[2025-02-05 16:23:38,052 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-02-05 16:23:38,056 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-02-05 16:23:48,192 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.