./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 798a7b37
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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-?-798a7b3-m
[2025-03-03 14:56:55,841 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-03 14:56:55,890 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-03-03 14:56:55,896 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-03 14:56:55,896 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-03 14:56:55,921 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-03 14:56:55,922 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-03 14:56:55,922 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-03 14:56:55,923 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-03 14:56:55,923 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-03 14:56:55,924 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-03 14:56:55,924 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-03 14:56:55,924 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-03 14:56:55,924 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-03 14:56:55,924 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-03 14:56:55,925 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-03 14:56:55,925 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-03-03 14:56:55,926 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-03 14:56:55,926 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-03 14:56:55,926 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-03 14:56:55,926 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-03 14:56:55,926 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-03 14:56:55,926 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 14:56:55,927 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-03 14:56:55,927 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-03 14:56:55,928 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/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
[2025-03-03 14:56:56,192 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-03 14:56:56,200 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-03 14:56:56,202 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-03 14:56:56,203 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-03 14:56:56,203 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-03 14:56:56,205 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2025-03-03 14:56:57,425 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28a771cd/f157f054b3ab4f5d8733863df01a62b4/FLAGc3bdb41b8
[2025-03-03 14:56:57,964 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-03 14:56:57,965 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2025-03-03 14:56:58,014 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28a771cd/f157f054b3ab4f5d8733863df01a62b4/FLAGc3bdb41b8
[2025-03-03 14:56:58,031 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28a771cd/f157f054b3ab4f5d8733863df01a62b4
[2025-03-03 14:56:58,033 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-03 14:56:58,035 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-03 14:56:58,036 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-03 14:56:58,037 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-03 14:56:58,042 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-03 14:56:58,043 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:58" (1/1) ...
[2025-03-03 14:56:58,047 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413b3285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:58, skipping insertion in model container
[2025-03-03 14:56:58,048 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:58" (1/1) ...
[2025-03-03 14:56:58,145 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-03 14:56:58,352 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686]
[2025-03-03 14:56:59,230 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 14:56:59,252 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-03 14:56:59,258 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42]
[2025-03-03 14:56:59,263 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686]
[2025-03-03 14:56:59,906 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 14:56:59,936 INFO  L204         MainTranslator]: Completed translation
[2025-03-03 14:56:59,936 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59 WrapperNode
[2025-03-03 14:56:59,937 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-03 14:56:59,938 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-03 14:56:59,938 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-03 14:56:59,938 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-03 14:56:59,944 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:00,231 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:01,404 INFO  L138                Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40479
[2025-03-03 14:57:01,405 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-03 14:57:01,406 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-03 14:57:01,407 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-03 14:57:01,407 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-03 14:57:01,413 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:01,414 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:01,760 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:01,978 INFO  L175           MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [8, 2, 2784, 3812, 2400, 1676, 2, 1252, 852, 326, 429, 4, 325, 429, 7, 2, 8]. 27 percent of accesses are in the largest equivalence class. The 652 initializations are split as follows [0, 2, 96, 96, 8, 8, 0, 4, 4, 108, 108, 0, 108, 108, 2, 0, 0]. The 661 writes are split as follows [4, 0, 96, 96, 8, 8, 1, 4, 4, 109, 107, 0, 109, 107, 3, 1, 4].
[2025-03-03 14:57:01,979 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:01,979 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:02,666 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:02,736 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:02,812 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:02,884 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:03,143 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-03 14:57:03,145 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-03 14:57:03,145 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-03 14:57:03,145 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-03 14:57:03,146 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (1/1) ...
[2025-03-03 14:57:03,150 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 14:57:03,160 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 14:57:03,172 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2025-03-03 14:57:03,177 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2025-03-03 14:57:03,193 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t2
[2025-03-03 14:57:03,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode
[2025-03-03 14:57:03,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t0
[2025-03-03 14:57:03,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t1
[2025-03-03 14:57:03,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag
[2025-03-03 14:57:03,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2025-03-03 14:57:03,194 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#6
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#7
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#8
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#9
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#10
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#11
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#12
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#13
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#14
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#15
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#16
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_count
[2025-03-03 14:57:03,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor
[2025-03-03 14:57:03,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-03-03 14:57:03,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-03-03 14:57:03,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-03-03 14:57:03,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#6
[2025-03-03 14:57:03,195 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#7
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#8
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#9
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#10
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#11
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#12
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#13
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#14
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#15
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#16
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed
[2025-03-03 14:57:03,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2025-03-03 14:57:03,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#6
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#7
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#8
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#9
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#10
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#11
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#12
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#13
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#14
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#15
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#16
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-03 14:57:03,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-03 14:57:03,196 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms
[2025-03-03 14:57:03,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms
[2025-03-03 14:57:03,197 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_get_count
[2025-03-03 14:57:03,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count
[2025-03-03 14:57:03,197 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode
[2025-03-03 14:57:03,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode
[2025-03-03 14:57:04,591 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-03 14:57:04,593 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-03 14:57:04,949 INFO  L1325  $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;
[2025-03-03 14:57:04,949 INFO  L1325  $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;
[2025-03-03 14:57:28,818 INFO  L?                        ?]: Removed 272 outVars from TransFormulas that were not future-live.
[2025-03-03 14:57:28,819 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-03 14:57:28,927 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-03 14:57:28,928 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2025-03-03 14:57:28,928 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:28 BoogieIcfgContainer
[2025-03-03 14:57:28,928 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-03 14:57:28,930 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-03 14:57:28,931 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-03 14:57:28,934 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-03 14:57:28,935 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:56:58" (1/3) ...
[2025-03-03 14:57:28,935 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202eae21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:28, skipping insertion in model container
[2025-03-03 14:57:28,935 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:59" (2/3) ...
[2025-03-03 14:57:28,935 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202eae21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:28, skipping insertion in model container
[2025-03-03 14:57:28,936 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:28" (3/3) ...
[2025-03-03 14:57:28,936 INFO  L128   eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c
[2025-03-03 14:57:28,948 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-03 14:57:28,951 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.
[2025-03-03 14:57:29,164 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-03 14:57:29,174 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;@240c1c63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-03 14:57:29,174 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-03 14:57:29,209 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)
[2025-03-03 14:57:29,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-03-03 14:57:29,706 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 14:57:29,709 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]
[2025-03-03 14:57:29,709 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 14:57:29,714 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 14:57:29,716 INFO  L85        PathProgramCache]: Analyzing trace with hash 718632136, now seen corresponding path program 1 times
[2025-03-03 14:57:29,721 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 14:57:29,721 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43277928]
[2025-03-03 14:57:29,722 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:57:29,723 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 14:57:40,645 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-03-03 14:57:40,800 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-03-03 14:57:40,800 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 14:57:40,800 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 14:57:44,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2025-03-03 14:57:44,266 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 14:57:44,267 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43277928]
[2025-03-03 14:57:44,268 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43277928] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 14:57:44,268 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439993843]
[2025-03-03 14:57:44,269 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:57:44,270 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 14:57:44,270 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 14:57:44,272 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-03-03 14:57:44,374 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-03-03 14:57:56,208 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-03-03 14:57:57,573 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-03-03 14:57:57,573 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 14:57:57,573 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 14:57:57,669 INFO  L256         TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core
[2025-03-03 14:57:57,781 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 14:57:57,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2025-03-03 14:57:57,932 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-03 14:57:57,932 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [439993843] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-03 14:57:57,932 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-03 14:57:57,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2025-03-03 14:57:57,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122022647]
[2025-03-03 14:57:57,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-03 14:57:57,943 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-03-03 14:57:57,943 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 14:57:57,960 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-03-03 14:57:57,960 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-03-03 14:57:57,989 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)
[2025-03-03 14:57:58,453 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 14:57:58,454 INFO  L93              Difference]: Finished difference Result 24019 states and 41356 transitions.
[2025-03-03 14:57:58,458 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-03-03 14:57:58,465 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
[2025-03-03 14:57:58,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 14:57:58,569 INFO  L225             Difference]: With dead ends: 24019
[2025-03-03 14:57:58,569 INFO  L226             Difference]: Without dead ends: 12006
[2025-03-03 14:57:58,644 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
[2025-03-03 14:57:58,647 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
[2025-03-03 14:57:58,650 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]
[2025-03-03 14:57:58,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12006 states.
[2025-03-03 14:58:03,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 12006.
[2025-03-03 14:58:03,952 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)
[2025-03-03 14:58:04,006 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 18621 transitions.
[2025-03-03 14:58:04,033 INFO  L78                 Accepts]: Start accepts. Automaton has 12006 states and 18621 transitions. Word has length 4616
[2025-03-03 14:58:04,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 14:58:04,036 INFO  L471      AbstractCegarLoop]: Abstraction has 12006 states and 18621 transitions.
[2025-03-03 14:58:04,037 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)
[2025-03-03 14:58:04,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 12006 states and 18621 transitions.
[2025-03-03 14:58:04,217 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-03-03 14:58:04,218 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 14:58:04,220 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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[2025-03-03 14:58:04,262 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-03-03 14:58:04,421 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2025-03-03 14:58:04,422 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 14:58:04,424 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 14:58:04,425 INFO  L85        PathProgramCache]: Analyzing trace with hash -1672899069, now seen corresponding path program 1 times
[2025-03-03 14:58:04,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 14:58:04,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437774538]
[2025-03-03 14:58:04,426 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:58:04,427 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 14:58:13,726 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.