./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 3061b6dc
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m
[2024-11-18 14:49:32,938 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-18 14:49:33,002 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-18 14:49:33,009 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-18 14:49:33,010 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-18 14:49:33,035 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-18 14:49:33,036 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-18 14:49:33,036 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-18 14:49:33,037 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-18 14:49:33,038 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-18 14:49:33,038 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-18 14:49:33,038 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-18 14:49:33,039 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-18 14:49:33,041 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-18 14:49:33,041 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-18 14:49:33,042 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-18 14:49:33,042 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-18 14:49:33,042 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-18 14:49:33,042 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-18 14:49:33,043 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-18 14:49:33,043 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-18 14:49:33,046 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-18 14:49:33,047 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-18 14:49:33,047 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-18 14:49:33,047 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-18 14:49:33,047 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-18 14:49:33,048 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-18 14:49:33,048 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-18 14:49:33,048 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-18 14:49:33,048 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-18 14:49:33,048 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-18 14:49:33,049 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-18 14:49:33,049 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 14:49:33,049 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-18 14:49:33,049 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-18 14:49:33,049 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-18 14:49:33,050 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-18 14:49:33,050 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-18 14:49:33,050 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-18 14:49:33,050 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-18 14:49:33,051 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-18 14:49:33,051 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-18 14:49:33,051 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
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
[2024-11-18 14:49:33,340 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-18 14:49:33,364 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-18 14:49:33,367 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-18 14:49:33,369 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-18 14:49:33,369 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-18 14:49:33,370 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2024-11-18 14:49:34,762 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-18 14:49:35,371 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-18 14:49:35,371 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c
[2024-11-18 14:49:35,433 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f675965/4d21ed985cf74982889751f1711ee4a5/FLAGd7af5847c
[2024-11-18 14:49:35,839 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f675965/4d21ed985cf74982889751f1711ee4a5
[2024-11-18 14:49:35,841 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-18 14:49:35,843 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-18 14:49:35,844 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-18 14:49:35,844 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-18 14:49:35,849 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-18 14:49:35,851 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:35" (1/1) ...
[2024-11-18 14:49:35,852 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393ce55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:35, skipping insertion in model container
[2024-11-18 14:49:35,852 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:49:35" (1/1) ...
[2024-11-18 14:49:35,993 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-18 14:49:36,272 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]
[2024-11-18 14:49:37,370 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 14:49:37,395 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-18 14:49:37,406 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42]
[2024-11-18 14:49:37,411 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]
[2024-11-18 14:49:38,305 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 14:49:38,382 INFO  L204         MainTranslator]: Completed translation
[2024-11-18 14:49:38,385 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38 WrapperNode
[2024-11-18 14:49:38,386 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-18 14:49:38,387 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-18 14:49:38,387 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-18 14:49:38,387 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-18 14:49:38,405 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:39,084 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:41,450 INFO  L138                Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40484
[2024-11-18 14:49:41,452 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-18 14:49:41,453 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-18 14:49:41,455 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-18 14:49:41,455 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-18 14:49:41,474 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:41,475 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:42,183 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:42,443 INFO  L175           MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [2, 2, 2784, 3812, 2400, 1676, 8, 1252, 852, 326, 429, 325, 429, 2, 4, 8, 7]. 27 percent of accesses are in the largest equivalence class. The 652 initializations are split as follows [2, 0, 96, 96, 8, 8, 0, 4, 4, 108, 108, 108, 108, 0, 0, 0, 2]. The 661 writes are split as follows [0, 1, 96, 96, 8, 8, 4, 4, 4, 109, 107, 109, 107, 1, 0, 4, 3].
[2024-11-18 14:49:42,444 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:42,444 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,169 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,236 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,337 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,529 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,828 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-18 14:49:43,829 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-18 14:49:43,830 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-18 14:49:43,830 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-18 14:49:43,831 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (1/1) ...
[2024-11-18 14:49:43,836 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 14:49:43,846 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 14:49:43,861 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)
[2024-11-18 14:49:43,864 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
[2024-11-18 14:49:43,906 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-18 14:49:43,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t2
[2024-11-18 14:49:43,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2
[2024-11-18 14:49:43,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode
[2024-11-18 14:49:43,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode
[2024-11-18 14:49:43,907 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-18 14:49:43,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t0
[2024-11-18 14:49:43,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0
[2024-11-18 14:49:43,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t1
[2024-11-18 14:49:43,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1
[2024-11-18 14:49:43,908 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag
[2024-11-18 14:49:43,908 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag
[2024-11-18 14:49:43,908 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2024-11-18 14:49:43,908 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2024-11-18 14:49:43,908 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2024-11-18 14:49:43,908 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2024-11-18 14:49:43,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2024-11-18 14:49:43,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2024-11-18 14:49:43,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#6
[2024-11-18 14:49:43,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#7
[2024-11-18 14:49:43,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#8
[2024-11-18 14:49:43,910 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#9
[2024-11-18 14:49:43,910 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#10
[2024-11-18 14:49:43,910 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#11
[2024-11-18 14:49:43,910 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#12
[2024-11-18 14:49:43,910 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#13
[2024-11-18 14:49:43,911 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#14
[2024-11-18 14:49:43,911 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#15
[2024-11-18 14:49:43,911 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#16
[2024-11-18 14:49:43,911 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_count
[2024-11-18 14:49:43,911 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count
[2024-11-18 14:49:43,911 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor
[2024-11-18 14:49:43,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor
[2024-11-18 14:49:43,912 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1
[2024-11-18 14:49:43,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1
[2024-11-18 14:49:43,912 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2
[2024-11-18 14:49:43,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2
[2024-11-18 14:49:43,912 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-18 14:49:43,912 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background
[2024-11-18 14:49:43,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#6
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#7
[2024-11-18 14:49:43,913 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#8
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#9
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#10
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#11
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#12
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#13
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#14
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#15
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#16
[2024-11-18 14:49:43,914 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed
[2024-11-18 14:49:43,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-18 14:49:43,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#6
[2024-11-18 14:49:43,915 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#7
[2024-11-18 14:49:43,919 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#8
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#9
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#10
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#11
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#12
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#13
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#14
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#15
[2024-11-18 14:49:43,920 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#16
[2024-11-18 14:49:43,921 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-18 14:49:43,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-18 14:49:43,921 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms
[2024-11-18 14:49:43,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms
[2024-11-18 14:49:43,921 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_get_count
[2024-11-18 14:49:43,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count
[2024-11-18 14:49:43,921 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode
[2024-11-18 14:49:43,921 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode
[2024-11-18 14:49:45,592 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-18 14:49:45,594 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-18 14:50:13,629 INFO  L?                        ?]: Removed 274 outVars from TransFormulas that were not future-live.
[2024-11-18 14:50:13,629 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-18 14:50:13,757 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-18 14:50:13,757 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-18 14:50:13,758 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:50:13 BoogieIcfgContainer
[2024-11-18 14:50:13,759 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-18 14:50:13,761 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-18 14:50:13,762 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-18 14:50:13,765 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-18 14:50:13,765 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:49:35" (1/3) ...
[2024-11-18 14:50:13,766 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2580f6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:50:13, skipping insertion in model container
[2024-11-18 14:50:13,766 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:49:38" (2/3) ...
[2024-11-18 14:50:13,767 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2580f6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:50:13, skipping insertion in model container
[2024-11-18 14:50:13,767 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:50:13" (3/3) ...
[2024-11-18 14:50:13,768 INFO  L112   eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c
[2024-11-18 14:50:13,786 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-18 14:50:13,786 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-18 14:50:14,069 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-18 14:50:14,076 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;@29882076, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-18 14:50:14,077 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-18 14:50:14,114 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 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)
[2024-11-18 14:50:14,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2024-11-18 14:50:14,694 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 14:50:14,697 INFO  L215           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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[2024-11-18 14:50:14,698 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 14:50:14,703 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 14:50:14,704 INFO  L85        PathProgramCache]: Analyzing trace with hash -194665925, now seen corresponding path program 1 times
[2024-11-18 14:50:14,711 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 14:50:14,711 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112294590]
[2024-11-18 14:50:14,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 14:50:14,713 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 14:50:25,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 14:50:30,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2024-11-18 14:50:30,719 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 14:50:30,719 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112294590]
[2024-11-18 14:50:30,721 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112294590] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 14:50:30,721 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917191544]
[2024-11-18 14:50:30,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 14:50:30,723 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 14:50:30,723 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 14:50:30,725 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)
[2024-11-18 14:50:30,727 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-18 14:50:45,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 14:50:45,531 INFO  L255         TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-18 14:50:45,701 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 14:50:45,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 226464 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 225792 trivial. 0 not checked.
[2024-11-18 14:50:45,934 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 14:50:45,935 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917191544] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 14:50:45,935 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 14:50:45,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2024-11-18 14:50:45,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63454962]
[2024-11-18 14:50:45,941 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 14:50:45,954 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-18 14:50:45,955 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 14:50:45,987 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-18 14:50:45,988 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-18 14:50:46,024 INFO  L87              Difference]: Start difference. First operand  has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 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)
[2024-11-18 14:50:46,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 14:50:46,561 INFO  L93              Difference]: Finished difference Result 24021 states and 41360 transitions.
[2024-11-18 14:50:46,564 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-18 14:50:46,568 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
[2024-11-18 14:50:46,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 14:50:46,707 INFO  L225             Difference]: With dead ends: 24021
[2024-11-18 14:50:46,707 INFO  L226             Difference]: Without dead ends: 12007
[2024-11-18 14:50:46,803 INFO  L431           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
[2024-11-18 14:50:46,809 INFO  L432           NwaCegarLoop]: 18629 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, 18629 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-18 14:50:46,811 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18629 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-18 14:50:46,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12007 states.