./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:48:56,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:48:57,041 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-24 23:48:57,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:48:57,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:48:57,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:48:57,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:48:57,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:48:57,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:48:57,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:48:57,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:48:57,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:48:57,062 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:48:57,062 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-24 23:48:57,062 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-24 23:48:57,063 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-24 23:48:57,063 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-24 23:48:57,063 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-24 23:48:57,064 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-24 23:48:57,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:48:57,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-24 23:48:57,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:48:57,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:48:57,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-24 23:48:57,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-24 23:48:57,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-24 23:48:57,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:48:57,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:48:57,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:48:57,067 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-24 23:48:57,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:48:57,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:48:57,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:48:57,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:48:57,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:48:57,068 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-24 23:48:57,068 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2024-10-24 23:48:57,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:48:57,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:48:57,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:48:57,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:48:57,276 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:48:57,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2024-10-24 23:48:58,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:48:58,726 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:48:58,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2024-10-24 23:48:58,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c6d1326/ae768ee3e1c94721a1abaadafa324c63/FLAG5c352813f [2024-10-24 23:48:58,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c6d1326/ae768ee3e1c94721a1abaadafa324c63 [2024-10-24 23:48:58,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:48:58,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:48:58,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:48:58,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:48:58,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:48:58,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2312fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58, skipping insertion in model container [2024-10-24 23:48:58,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:48:58,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:48:58,916 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:48:58,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:48:58,937 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:48:58,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58 WrapperNode [2024-10-24 23:48:58,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:48:58,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:48:58,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:48:58,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:48:58,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,957 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 55 [2024-10-24 23:48:58,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:48:58,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:48:58,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:48:58,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:48:58,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,970 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-24 23:48:58,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:48:58,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:48:58,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:48:58,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:48:58,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (1/1) ... [2024-10-24 23:48:58,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:59,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:59,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-24 23:48:59,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:48:59,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:48:59,112 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:48:59,114 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:48:59,231 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-24 23:48:59,231 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:48:59,245 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:48:59,246 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 23:48:59,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:59 BoogieIcfgContainer [2024-10-24 23:48:59,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:48:59,247 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-24 23:48:59,247 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-24 23:48:59,250 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-24 23:48:59,251 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:59,251 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.10 11:48:58" (1/3) ... [2024-10-24 23:48:59,252 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a95a8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:48:59, skipping insertion in model container [2024-10-24 23:48:59,252 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:59,252 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:58" (2/3) ... [2024-10-24 23:48:59,253 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a95a8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:48:59, skipping insertion in model container [2024-10-24 23:48:59,253 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:59,253 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:59" (3/3) ... [2024-10-24 23:48:59,255 INFO L332 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2024-10-24 23:48:59,302 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-24 23:48:59,302 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-24 23:48:59,302 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-24 23:48:59,302 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-24 23:48:59,302 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-24 23:48:59,302 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-24 23:48:59,303 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-24 23:48:59,303 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-24 23:48:59,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:59,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-24 23:48:59,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:59,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:59,323 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:48:59,323 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-10-24 23:48:59,323 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-24 23:48:59,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:59,325 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-24 23:48:59,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:59,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:59,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:48:59,326 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-10-24 23:48:59,331 INFO L745 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~LOCK~0 := 0; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~post5#1, main_~got_lock~0#1, main_~old~0#1, main_~new~0#1;havoc main_~got_lock~0#1;main_~old~0#1 := 0;main_~new~0#1 := 0;havoc main_#t~nondet0#1; 20#L34true assume 0 != main_#t~nondet0#1;havoc main_#t~nondet0#1; 17#L35-4true [2024-10-24 23:48:59,332 INFO L747 eck$LassoCheckResult]: Loop: 17#L35-4true main_~got_lock~0#1 := 0;havoc main_#t~nondet1#1; 19#L37true assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 14#L37-2true assume !(0 != main_~got_lock~0#1); 6#L35-1true havoc main_#t~nondet3#1; 10#L35-2true assume !!(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1; 17#L35-4true [2024-10-24 23:48:59,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-10-24 23:48:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:59,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118036138] [2024-10-24 23:48:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:59,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 37600282, now seen corresponding path program 1 times [2024-10-24 23:48:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338834084] [2024-10-24 23:48:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:59,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 119669785, now seen corresponding path program 1 times [2024-10-24 23:48:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:59,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888750264] [2024-10-24 23:48:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:59,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.10 11:48:59 BoogieIcfgContainer [2024-10-24 23:48:59,709 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-24 23:48:59,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:48:59,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:48:59,710 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:48:59,711 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:59" (3/4) ... [2024-10-24 23:48:59,712 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-24 23:48:59,735 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 23:48:59,735 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:48:59,737 INFO L158 Benchmark]: Toolchain (without parser) took 989.05ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 88.4MB in the beginning and 219.0MB in the end (delta: -130.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:59,737 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 159.4MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:59,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.07ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 76.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 23:48:59,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.69ms. Allocated memory is still 159.4MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:48:59,738 INFO L158 Benchmark]: Boogie Preprocessor took 22.79ms. Allocated memory is still 159.4MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:59,738 INFO L158 Benchmark]: RCFGBuilder took 265.13ms. Allocated memory is still 159.4MB. Free memory was 73.8MB in the beginning and 63.0MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 23:48:59,739 INFO L158 Benchmark]: BuchiAutomizer took 462.22ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 63.0MB in the beginning and 221.1MB in the end (delta: -158.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:59,739 INFO L158 Benchmark]: Witness Printer took 25.47ms. Allocated memory is still 260.0MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:48:59,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 159.4MB. Free memory is still 111.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.07ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 76.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.69ms. Allocated memory is still 159.4MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.79ms. Allocated memory is still 159.4MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.13ms. Allocated memory is still 159.4MB. Free memory was 73.8MB in the beginning and 63.0MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 462.22ms. Allocated memory was 159.4MB in the beginning and 260.0MB in the end (delta: 100.7MB). Free memory was 63.0MB in the beginning and 221.1MB in the end (delta: -158.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.47ms. Allocated memory is still 260.0MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-24 23:48:59,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)