./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/systemc/token_ring.01.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.01.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 10:05:55,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 10:05:55,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 10:05:55,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 10:05:55,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 10:05:55,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 10:05:55,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 10:05:55,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 10:05:55,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 10:05:55,637 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 10:05:55,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 10:05:55,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 10:05:55,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 10:05:55,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 10:05:55,640 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:05:55,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 10:05:55,640 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 10:05:55,641 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) 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 -> 7b0a21004c99a1cc1588d43a2481960a2ce9f2cdf68e9a363306433e7d24bd30 [2025-02-08 10:05:55,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 10:05:55,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 10:05:55,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 10:05:55,835 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 10:05:55,835 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 10:05:55,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2025-02-08 10:05:56,942 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/842dfbaf2/59504c864a28456986bb0f546de584e5/FLAGdd2b5461b [2025-02-08 10:05:57,201 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 10:05:57,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.01.cil-1.c [2025-02-08 10:05:57,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/842dfbaf2/59504c864a28456986bb0f546de584e5/FLAGdd2b5461b [2025-02-08 10:05:57,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/842dfbaf2/59504c864a28456986bb0f546de584e5 [2025-02-08 10:05:57,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 10:05:57,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 10:05:57,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 10:05:57,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 10:05:57,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 10:05:57,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d3808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57, skipping insertion in model container [2025-02-08 10:05:57,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 10:05:57,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:05:57,416 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 10:05:57,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 10:05:57,462 INFO L204 MainTranslator]: Completed translation [2025-02-08 10:05:57,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57 WrapperNode [2025-02-08 10:05:57,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 10:05:57,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 10:05:57,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 10:05:57,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 10:05:57,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,485 INFO L138 Inliner]: procedures = 30, calls = 35, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 212 [2025-02-08 10:05:57,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 10:05:57,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 10:05:57,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 10:05:57,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 10:05:57,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,502 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 10:05:57,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 10:05:57,513 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 10:05:57,513 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 10:05:57,514 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 10:05:57,514 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (1/1) ... [2025-02-08 10:05:57,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 10:05:57,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 10:05:57,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 10:05:57,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-08 10:05:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 10:05:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 10:05:57,609 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 10:05:57,610 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 10:05:57,834 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L440: SUMMARY for call fire_delta_events(); srcloc: null [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L432: havoc eval_#t~ret5#1, eval_#t~nondet6#1, eval_~tmp_ndt_1~0#1, eval_#t~nondet7#1, eval_~tmp_ndt_2~0#1, eval_~tmp~0#1;assume { :end_inline_eval } true;start_simulation_~kernel_st~0#1 := 2; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69: assume ~token~0 != 1 + ~local~0;assume { :begin_inline_error } true;assume { :begin_inline_reach_error } true;assume false;assume { :end_inline_reach_error } true;assume false; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69: assume !(~token~0 != 1 + ~local~0); [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-1: assume 1 + ~local~0 <= 2147483647; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-1: assume !(1 + ~local~0 <= 2147483647); [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-2: assume 1 + ~local~0 >= -2147483648; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L69-2: assume !(1 + ~local~0 >= -2147483648); [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L226: havoc master_#t~nondet4#1;assume { :end_inline_master } true; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L441: SUMMARY for call activate_threads(); srcloc: null [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L375: assume 1 == ~E_1~0;~E_1~0 := 2; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L375: assume !(1 == ~E_1~0); [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L400: assume -2147483648 <= stop_simulation_#t~ret10#1 && stop_simulation_#t~ret10#1 <= 2147483647;stop_simulation_~tmp~2#1 := stop_simulation_#t~ret10#1;havoc stop_simulation_#t~ret10#1; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L400-1: SUMMARY for call stop_simulation_#t~ret10#1 := exists_runnable_thread(); srcloc: null [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L458: start_simulation_#t~ret12#1 := stop_simulation_#res#1;havoc stop_simulation_#t~ret10#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;assume { :end_inline_stop_simulation } true;assume -2147483648 <= start_simulation_#t~ret12#1 && start_simulation_#t~ret12#1 <= 2147483647;start_simulation_~tmp___0~1#1 := start_simulation_#t~ret12#1;havoc start_simulation_#t~ret12#1; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L458-1: assume { :begin_inline_stop_simulation } true;havoc stop_simulation_#res#1;havoc stop_simulation_#t~ret10#1, stop_simulation_~tmp~2#1, stop_simulation_~__retres2~0#1;havoc stop_simulation_~tmp~2#1;havoc stop_simulation_~__retres2~0#1; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L450: assume { :end_inline_fire_time_events } true; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L442: SUMMARY for call reset_delta_events(); srcloc: null [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L360: assume 1 == ~M_E~0;~M_E~0 := 2; [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L360: assume !(1 == ~M_E~0); [2025-02-08 10:05:57,835 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L71: assume { :end_inline_error } true; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L451: assume { :begin_inline_reset_time_events } true; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L451-1: SUMMARY for call activate_threads(); srcloc: null [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: assume 0 != stop_simulation_~tmp~2#1;stop_simulation_~__retres2~0#1 := 0; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: assume !(0 != stop_simulation_~tmp~2#1);stop_simulation_~__retres2~0#1 := 1;stop_simulation_#res#1 := stop_simulation_~__retres2~0#1; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L460: assume 0 != start_simulation_~tmp___0~1#1; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L460: assume !(0 != start_simulation_~tmp___0~1#1); [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L452: assume { :end_inline_reset_time_events } true; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L436: start_simulation_~kernel_st~0#1 := 3; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L436-1: SUMMARY for call update_channels(); srcloc: null [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L370: assume 1 == ~E_M~0;~E_M~0 := 2; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L370: assume !(1 == ~E_M~0); [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L445: assume -2147483648 <= start_simulation_#t~ret11#1 && start_simulation_#t~ret11#1 <= 2147483647;start_simulation_~tmp~3#1 := start_simulation_#t~ret11#1;havoc start_simulation_#t~ret11#1; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L445-1: SUMMARY for call start_simulation_#t~ret11#1 := exists_runnable_thread(); srcloc: null [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107: assume 1 + ~token~0 <= 2147483647;~token~0 := 1 + ~token~0;~E_M~0 := 1; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107: assume !(1 + ~token~0 <= 2147483647); [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-1: assume 1 + ~token~0 >= -2147483648; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L107-1: assume !(1 + ~token~0 >= -2147483648); [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L240: assume { :end_inline_transmit1 } true; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L447: assume 0 == start_simulation_~tmp~3#1;start_simulation_~kernel_st~0#1 := 4;assume { :begin_inline_fire_time_events } true;~M_E~0 := 1; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L447: assume !(0 == start_simulation_~tmp~3#1); [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L365: assume 1 == ~T1_E~0;~T1_E~0 := 2; [2025-02-08 10:05:57,836 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L365: assume !(1 == ~T1_E~0); [2025-02-08 10:05:57,838 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109: ~E_M~0 := 2; [2025-02-08 10:05:57,838 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L109-1: SUMMARY for call immediate_notify(); srcloc: null [2025-02-08 10:05:57,852 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-02-08 10:05:57,852 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 10:05:57,862 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 10:05:57,862 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 10:05:57,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:05:57 BoogieIcfgContainer [2025-02-08 10:05:57,863 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 10:05:57,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 10:05:57,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 10:05:57,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 10:05:57,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 10:05:57" (1/3) ... [2025-02-08 10:05:57,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d47416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:05:57, skipping insertion in model container [2025-02-08 10:05:57,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 10:05:57" (2/3) ... [2025-02-08 10:05:57,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d47416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 10:05:57, skipping insertion in model container [2025-02-08 10:05:57,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:05:57" (3/3) ... [2025-02-08 10:05:57,870 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-1.c [2025-02-08 10:05:57,881 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 10:05:57,882 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.01.cil-1.c that has 7 procedures, 77 locations, 1 initial locations, 4 loop locations, and 4 error locations. [2025-02-08 10:05:57,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 10:05:57,929 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;@39d837a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 10:05:57,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 10:05:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 50 states have (on average 1.62) internal successors, (81), 63 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 10:05:57,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 10:05:57,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2025-02-08 10:05:57,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2025-02-08 10:05:57,940 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2025-02-08 10:05:57,940 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2025-02-08 10:05:57,942 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-02-08 10:05:57,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 50 states have (on average 1.62) internal successors, (81), 63 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 10:05:57,978 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 10:05:57,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 10:05:57 BoogieIcfgContainer [2025-02-08 10:05:57,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 10:05:57,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 10:05:57,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 10:05:57,988 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 10:05:57,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 10:05:57" (3/4) ... [2025-02-08 10:05:57,991 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 10:05:57,993 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure activate_threads [2025-02-08 10:05:57,993 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure immediate_notify [2025-02-08 10:05:57,994 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2025-02-08 10:05:57,994 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure fire_delta_events [2025-02-08 10:05:57,994 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure update_channels [2025-02-08 10:05:57,994 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure reset_delta_events [2025-02-08 10:05:57,997 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 10:05:57,998 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-08 10:05:57,998 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 10:05:57,998 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 10:05:58,058 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 10:05:58,058 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 10:05:58,058 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 10:05:58,059 INFO L158 Benchmark]: Toolchain (without parser) took 802.40ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 55.3MB in the end (delta: 50.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,059 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:05:58,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.02ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 93.3MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.64ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 92.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,061 INFO L158 Benchmark]: Boogie Preprocessor took 25.96ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 10:05:58,062 INFO L158 Benchmark]: IcfgBuilder took 350.07ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 72.1MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,062 INFO L158 Benchmark]: TraceAbstraction took 123.67ms. Allocated memory is still 142.6MB. Free memory was 71.0MB in the beginning and 62.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,064 INFO L158 Benchmark]: Witness Printer took 70.23ms. Allocated memory is still 142.6MB. Free memory was 62.3MB in the beginning and 55.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 10:05:58,065 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.02ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 93.3MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.64ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 92.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.96ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 350.07ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 72.1MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 123.67ms. Allocated memory is still 142.6MB. Free memory was 71.0MB in the beginning and 62.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 70.23ms. Allocated memory is still 142.6MB. Free memory was 62.3MB in the beginning and 55.3MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 77 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 10:05:58,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE