./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.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.M4-2.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 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-798a7b3-m
[2025-03-03 14:57:02,919 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-03-03 14:57:02,972 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2025-03-03 14:57:02,976 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-03-03 14:57:02,976 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-03-03 14:57:02,997 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-03-03 14:57:02,998 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-03-03 14:57:02,998 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-03-03 14:57:02,998 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2025-03-03 14:57:02,998 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2025-03-03 14:57:02,999 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-03-03 14:57:02,999 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-03-03 14:57:03,000 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-03-03 14:57:03,000 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-03-03 14:57:03,000 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-03-03 14:57:03,000 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2025-03-03 14:57:03,000 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2025-03-03 14:57:03,000 INFO  L153        SettingsManager]:  * sizeof long=4
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * sizeof long double=12
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2025-03-03 14:57:03,001 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2025-03-03 14:57:03,002 INFO  L151        SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 14:57:03,002 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Compute procedure contracts=false
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2025-03-03 14:57:03,002 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-03-03 14:57:03,002 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 -> 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e
[2025-03-03 14:57:03,237 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-03-03 14:57:03,245 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-03-03 14:57:03,247 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-03-03 14:57:03,249 INFO  L270        PluginConnector]: Initializing CDTParser...
[2025-03-03 14:57:03,249 INFO  L274        PluginConnector]: CDTParser initialized
[2025-03-03 14:57:03,250 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c
[2025-03-03 14:57:04,427 INFO  L533              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3558ea8c/31da4e9597114933a5cb4acff27c2715/FLAGb890877c8
[2025-03-03 14:57:04,820 INFO  L384              CDTParser]: Found 1 translation units.
[2025-03-03 14:57:04,821 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c
[2025-03-03 14:57:04,859 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3558ea8c/31da4e9597114933a5cb4acff27c2715/FLAGb890877c8
[2025-03-03 14:57:04,871 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3558ea8c/31da4e9597114933a5cb4acff27c2715
[2025-03-03 14:57:04,872 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-03-03 14:57:04,875 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2025-03-03 14:57:04,876 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2025-03-03 14:57:04,876 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2025-03-03 14:57:04,879 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2025-03-03 14:57:04,880 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:57:04" (1/1) ...
[2025-03-03 14:57:04,880 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fdd496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:04, skipping insertion in model container
[2025-03-03 14:57:04,880 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:57:04" (1/1) ...
[2025-03-03 14:57:04,986 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2025-03-03 14:57:05,189 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.M4-2.c[1674,1687]
[2025-03-03 14:57:05,967 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 14:57:05,989 INFO  L200         MainTranslator]: Completed pre-run
[2025-03-03 14:57:05,995 WARN  L75    lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.bug1.i","-S") [42]
[2025-03-03 14:57:06,000 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.M4-2.c[1674,1687]
[2025-03-03 14:57:06,657 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2025-03-03 14:57:06,754 INFO  L204         MainTranslator]: Completed translation
[2025-03-03 14:57:06,754 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06 WrapperNode
[2025-03-03 14:57:06,755 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2025-03-03 14:57:06,756 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2025-03-03 14:57:06,757 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2025-03-03 14:57:06,757 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2025-03-03 14:57:06,761 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:06,966 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:08,124 INFO  L138                Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40479
[2025-03-03 14:57:08,124 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2025-03-03 14:57:08,125 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-03-03 14:57:08,125 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-03-03 14:57:08,125 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-03-03 14:57:08,131 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:08,131 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:08,407 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:08,579 INFO  L175           MemorySlicer]: Split 14318 memory accesses to 17 slices as follows [2, 2, 2784, 3812, 2400, 1676, 4, 1252, 852, 326, 429, 325, 429, 2, 8, 7, 8]. 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, 2, 0]. The 661 writes are split as follows [0, 1, 96, 96, 8, 8, 0, 4, 4, 109, 107, 109, 107, 1, 4, 3, 4].
[2025-03-03 14:57:08,579 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:08,579 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,177 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,248 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,362 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,426 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,689 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-03-03 14:57:09,691 INFO  L112        PluginConnector]: ------------------------IcfgBuilder----------------------------
[2025-03-03 14:57:09,691 INFO  L270        PluginConnector]: Initializing IcfgBuilder...
[2025-03-03 14:57:09,691 INFO  L274        PluginConnector]: IcfgBuilder initialized
[2025-03-03 14:57:09,788 INFO  L184        PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (1/1) ...
[2025-03-03 14:57:09,793 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2025-03-03 14:57:09,803 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 14:57:09,814 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 14:57:09,816 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 14:57:09,832 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2025-03-03 14:57:09,832 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t2
[2025-03-03 14:57:09,832 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2
[2025-03-03 14:57:09,832 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode
[2025-03-03 14:57:09,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t0
[2025-03-03 14:57:09,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_cs_t1
[2025-03-03 14:57:09,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag
[2025-03-03 14:57:09,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#0
[2025-03-03 14:57:09,833 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#1
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#2
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#3
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#4
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#5
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#6
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#7
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#8
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#9
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#10
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#11
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#12
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#13
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#14
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#15
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int#16
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_count
[2025-03-03 14:57:09,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count
[2025-03-03 14:57:09,834 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#0
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#1
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#2
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#3
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#4
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#5
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#6
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#7
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#8
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#9
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#10
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#11
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#12
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#13
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#14
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#15
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int#16
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2025-03-03 14:57:09,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#1
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#2
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#3
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#4
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#5
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#6
[2025-03-03 14:57:09,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#7
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#8
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#9
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#10
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#11
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#12
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#13
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#14
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#15
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#16
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2025-03-03 14:57:09,836 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms
[2025-03-03 14:57:09,836 INFO  L138     BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure nxt_motor_get_count
[2025-03-03 14:57:09,836 INFO  L138     BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count
[2025-03-03 14:57:09,836 INFO  L130     BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode
[2025-03-03 14:57:09,836 INFO  L138     BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode
[2025-03-03 14:57:11,064 INFO  L256             CfgBuilder]: Building ICFG
[2025-03-03 14:57:11,065 INFO  L286             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-03-03 14:57:11,399 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 14:57:11,399 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 14:57:38,418 INFO  L?                        ?]: Removed 272 outVars from TransFormulas that were not future-live.
[2025-03-03 14:57:38,418 INFO  L307             CfgBuilder]: Performing block encoding
[2025-03-03 14:57:38,570 INFO  L331             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2025-03-03 14:57:38,570 INFO  L336             CfgBuilder]: Removed 0 assume(true) statements.
[2025-03-03 14:57:38,571 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:38 BoogieIcfgContainer
[2025-03-03 14:57:38,571 INFO  L131        PluginConnector]: ------------------------ END IcfgBuilder----------------------------
[2025-03-03 14:57:38,572 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-03-03 14:57:38,573 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-03-03 14:57:38,576 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-03-03 14:57:38,576 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:57:04" (1/3) ...
[2025-03-03 14:57:38,577 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9d8df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:38, skipping insertion in model container
[2025-03-03 14:57:38,577 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:57:06" (2/3) ...
[2025-03-03 14:57:38,578 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9d8df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:57:38, skipping insertion in model container
[2025-03-03 14:57:38,578 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:57:38" (3/3) ...
[2025-03-03 14:57:38,579 INFO  L128   eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-2.c
[2025-03-03 14:57:38,589 INFO  L216   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-03-03 14:57:38,592 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M4-2.c that has 16 procedures, 12012 locations, 1 initial locations, 1 loop locations, and 1 error locations.
[2025-03-03 14:57:38,850 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-03-03 14:57:38,857 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;@65240775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-03-03 14:57:38,858 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-03-03 14:57:38,890 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 14:57:39,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-03-03 14:57:39,176 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 14:57:39,178 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 14:57:39,179 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 14:57:39,183 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 14:57:39,184 INFO  L85        PathProgramCache]: Analyzing trace with hash 718632136, now seen corresponding path program 1 times
[2025-03-03 14:57:39,189 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 14:57:39,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516753499]
[2025-03-03 14:57:39,190 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:57:39,191 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 14:57:49,055 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-03-03 14:57:49,220 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-03-03 14:57:49,220 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 14:57:49,221 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 14:57:52,383 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 14:57:52,384 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-03-03 14:57:52,384 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516753499]
[2025-03-03 14:57:52,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516753499] provided 0 perfect and 1 imperfect interpolant sequences
[2025-03-03 14:57:52,386 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098778349]
[2025-03-03 14:57:52,387 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:57:52,387 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-03-03 14:57:52,387 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2025-03-03 14:57:52,390 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 14:57:52,394 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 14:58:03,497 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.
[2025-03-03 14:58:04,758 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4616 of 4616 statements.
[2025-03-03 14:58:04,759 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-03-03 14:58:04,759 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-03-03 14:58:04,849 INFO  L256         TraceCheckSpWp]: Trace formula consists of 13978 conjuncts, 1 conjuncts are in the unsatisfiable core
[2025-03-03 14:58:04,952 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-03-03 14:58:05,104 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 14:58:05,104 INFO  L308         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2025-03-03 14:58:05,104 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098778349] provided 1 perfect and 0 imperfect interpolant sequences
[2025-03-03 14:58:05,104 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2025-03-03 14:58:05,107 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2025-03-03 14:58:05,109 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971552109]
[2025-03-03 14:58:05,110 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-03-03 14:58:05,122 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2025-03-03 14:58:05,123 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-03-03 14:58:05,147 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2025-03-03 14:58:05,148 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2025-03-03 14:58:05,181 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 14:58:05,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-03-03 14:58:05,645 INFO  L93              Difference]: Finished difference Result 24019 states and 41356 transitions.
[2025-03-03 14:58:05,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2025-03-03 14:58:05,654 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 14:58:05,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2025-03-03 14:58:05,758 INFO  L225             Difference]: With dead ends: 24019
[2025-03-03 14:58:05,758 INFO  L226             Difference]: Without dead ends: 12006
[2025-03-03 14:58:05,831 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 14:58:05,834 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 14:58:05,835 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 14:58:05,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12006 states.
[2025-03-03 14:58:12,582 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 12006.
[2025-03-03 14:58:12,625 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 14:58:12,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 18621 transitions.
[2025-03-03 14:58:12,708 INFO  L78                 Accepts]: Start accepts. Automaton has 12006 states and 18621 transitions. Word has length 4616
[2025-03-03 14:58:12,710 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2025-03-03 14:58:12,711 INFO  L471      AbstractCegarLoop]: Abstraction has 12006 states and 18621 transitions.
[2025-03-03 14:58:12,716 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 14:58:12,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 12006 states and 18621 transitions.
[2025-03-03 14:58:12,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4617
[2025-03-03 14:58:12,898 INFO  L210           NwaCegarLoop]: Found error trace
[2025-03-03 14:58:12,899 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 14:58:12,940 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 14:58:13,100 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 14:58:13,101 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2025-03-03 14:58:13,102 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2025-03-03 14:58:13,104 INFO  L85        PathProgramCache]: Analyzing trace with hash -1672899069, now seen corresponding path program 1 times
[2025-03-03 14:58:13,104 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-03-03 14:58:13,104 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363781103]
[2025-03-03 14:58:13,104 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-03-03 14:58:13,105 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-03-03 14:58:22,480 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4616 statements into 1 equivalence classes.