./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.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.M1-2.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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:56:46,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:56:46,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:56:46,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:56:46,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:56:46,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:56:46,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:56:46,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:56:46,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:56:46,512 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:56:46,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:56:46,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:56:46,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:56:46,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:56:46,513 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:56:46,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:56:46,514 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:56:46,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:56:46,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:56:46,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:56:46,515 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 -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2025-03-03 14:56:46,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:56:46,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:56:46,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:56:46,754 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:56:46,754 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:56:46,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-03-03 14:56:47,858 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fad64d1/1a80634695504fac92d9de494bdcc359/FLAG60d027e22 [2025-03-03 14:56:48,234 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:56:48,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2025-03-03 14:56:48,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fad64d1/1a80634695504fac92d9de494bdcc359/FLAG60d027e22 [2025-03-03 14:56:48,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26fad64d1/1a80634695504fac92d9de494bdcc359 [2025-03-03 14:56:48,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:56:48,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:56:48,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:56:48,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:56:48,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:56:48,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:48,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fdff9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48, skipping insertion in model container [2025-03-03 14:56:48,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:48,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:56:48,603 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.M1-2.c[1673,1686] [2025-03-03 14:56:48,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:56:48,820 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:56:48,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2025-03-03 14:56:48,832 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.M1-2.c[1673,1686] [2025-03-03 14:56:48,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:56:48,978 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:56:48,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48 WrapperNode [2025-03-03 14:56:48,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:56:48,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:56:48,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:56:48,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:56:48,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,172 INFO L138 Inliner]: procedures = 57, calls = 1828, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3990 [2025-03-03 14:56:49,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:56:49,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:56:49,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:56:49,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:56:49,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,265 INFO L175 MemorySlicer]: Split 1382 memory accesses to 17 slices as follows [2, 8, 4, 264, 305, 156, 113, 79, 57, 83, 105, 82, 105, 8, 2, 7, 2]. 22 percent of accesses are in the largest equivalence class. The 166 initializations are split as follows [2, 0, 0, 24, 24, 2, 2, 1, 1, 27, 27, 27, 27, 0, 0, 2, 0]. The 175 writes are split as follows [0, 4, 0, 24, 24, 2, 2, 1, 1, 28, 26, 28, 26, 4, 1, 3, 1]. [2025-03-03 14:56:49,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,349 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:56:49,414 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:56:49,414 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:56:49,414 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:56:49,415 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (1/1) ... [2025-03-03 14:56:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:56:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:56:49,438 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 14:56:49,442 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 14:56:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:56:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2025-03-03 14:56:49,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2025-03-03 14:56:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:56:49,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2025-03-03 14:56:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 14:56:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2025-03-03 14:56:49,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2025-03-03 14:56:49,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2025-03-03 14:56:49,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-03 14:56:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2025-03-03 14:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2025-03-03 14:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:56:49,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-03 14:56:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-03 14:56:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2025-03-03 14:56:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 14:56:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:56:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:56:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2025-03-03 14:56:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2025-03-03 14:56:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2025-03-03 14:56:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:56:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2025-03-03 14:56:49,781 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:56:49,783 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:56:50,112 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 14:56:50,112 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 14:56:53,659 INFO L? ?]: Removed 191 outVars from TransFormulas that were not future-live. [2025-03-03 14:56:53,660 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:56:53,693 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:56:53,694 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:56:53,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:56:53 BoogieIcfgContainer [2025-03-03 14:56:53,694 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:56:53,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:56:53,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:56:53,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:56:53,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:56:48" (1/3) ... [2025-03-03 14:56:53,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f98580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:56:53, skipping insertion in model container [2025-03-03 14:56:53,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:56:48" (2/3) ... [2025-03-03 14:56:53,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f98580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:56:53, skipping insertion in model container [2025-03-03 14:56:53,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:56:53" (3/3) ... [2025-03-03 14:56:53,703 INFO L128 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2025-03-03 14:56:53,713 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:56:53,716 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M1-2.c that has 16 procedures, 1137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:56:53,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:56:53,789 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;@6be9c61c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:56:53,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:56:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-03 14:56:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-03 14:56:53,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:56:53,851 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:53,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:56:53,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:56:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -554561153, now seen corresponding path program 1 times [2025-03-03 14:56:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:56:53,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663993783] [2025-03-03 14:56:53,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:56:54,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:56:54,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:56:54,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:56:54,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:56:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-03 14:56:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:56:54,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663993783] [2025-03-03 14:56:54,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663993783] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:56:54,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635019763] [2025-03-03 14:56:54,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:54,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:56:54,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:56:54,776 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 14:56:54,777 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 14:56:55,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:56:55,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:56:55,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:56:55,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:56:55,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:56:55,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:56:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2025-03-03 14:56:55,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:56:55,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635019763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:56:55,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:56:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 14:56:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586276919] [2025-03-03 14:56:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:56:55,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:56:55,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:56:55,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:56:55,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:56:55,868 INFO L87 Difference]: Start difference. First operand has 1137 states, 728 states have (on average 1.2884615384615385) internal successors, (938), 760 states have internal predecessors, (938), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-03 14:56:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:56:55,948 INFO L93 Difference]: Finished difference Result 2269 states and 3814 transitions. [2025-03-03 14:56:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:56:55,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 722 [2025-03-03 14:56:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:56:55,969 INFO L225 Difference]: With dead ends: 2269 [2025-03-03 14:56:55,970 INFO L226 Difference]: Without dead ends: 1131 [2025-03-03 14:56:55,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 723 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 14:56:55,987 INFO L435 NwaCegarLoop]: 1720 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, 1720 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 14:56:55,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:56:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2025-03-03 14:56:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2025-03-03 14:56:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 723 states have (on average 1.2849239280774551) internal successors, (929), 754 states have internal predecessors, (929), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2025-03-03 14:56:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1713 transitions. [2025-03-03 14:56:56,195 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1713 transitions. Word has length 722 [2025-03-03 14:56:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:56:56,196 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1713 transitions. [2025-03-03 14:56:56,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2025-03-03 14:56:56,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1713 transitions. [2025-03-03 14:56:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-03 14:56:56,222 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:56:56,223 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:56,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:56:56,431 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 14:56:56,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:56:56,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:56:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1049830414, now seen corresponding path program 1 times [2025-03-03 14:56:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:56:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938930685] [2025-03-03 14:56:56,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:56:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:56:56,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:57:02,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:57:02,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:57:02,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:57:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 27 proven. 471 refuted. 0 times theorem prover too weak. 13782 trivial. 0 not checked. [2025-03-03 14:57:08,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:57:08,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938930685] [2025-03-03 14:57:08,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938930685] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:57:08,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803784399] [2025-03-03 14:57:08,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:57:08,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:57:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:57:08,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:57:08,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:57:09,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-03 14:57:11,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-03 14:57:11,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:57:11,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:57:11,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-03-03 14:57:11,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:57:11,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2025-03-03 14:57:12,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2025-03-03 14:57:12,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 3 [2025-03-03 14:57:12,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 14:57:12,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 33 [2025-03-03 14:57:17,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 14:57:17,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2025-03-03 14:57:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 7045 proven. 718 refuted. 0 times theorem prover too weak. 6517 trivial. 0 not checked. [2025-03-03 14:57:17,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:57:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 66 proven. 924 refuted. 0 times theorem prover too weak. 13290 trivial. 0 not checked. [2025-03-03 14:57:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803784399] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:57:19,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:57:19,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24, 21] total 58 [2025-03-03 14:57:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056156062] [2025-03-03 14:57:19,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:57:19,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-03 14:57:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:57:19,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-03 14:57:19,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2720, Unknown=0, NotChecked=0, Total=3306 [2025-03-03 14:57:19,698 INFO L87 Difference]: Start difference. First operand 1131 states and 1713 transitions. Second operand has 58 states, 47 states have (on average 15.23404255319149) internal successors, (716), 51 states have internal predecessors, (716), 21 states have call successors, (203), 8 states have call predecessors, (203), 14 states have return successors, (203), 16 states have call predecessors, (203), 21 states have call successors, (203) [2025-03-03 14:57:28,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:30,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:32,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:35,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:39,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:42,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:45,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:49,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:53,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:55,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:57,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:57:58,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:00,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:05,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:06,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:09,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:12,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-03 14:58:13,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []