./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../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.graphml --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 d8654406b0017787fa4ace126fd130560d0ff458 ......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:34:23,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:34:23,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:34:23,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:34:23,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:34:23,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:34:23,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:34:23,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:34:23,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:34:23,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:34:23,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:34:23,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:34:23,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:34:23,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:34:23,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:34:23,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:34:23,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:34:23,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:34:23,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:34:23,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:34:23,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:34:23,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:34:23,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:34:23,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:34:23,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:34:23,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:34:23,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:34:23,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:34:23,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:34:23,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:34:23,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:34:23,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:34:23,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:34:23,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:34:23,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:34:23,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:34:23,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:34:23,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:34:23,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:34:23,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:34:23,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:34:23,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:34:23,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:34:23,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:34:23,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:34:23,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:34:23,575 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:34:23,575 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:34:23,575 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:34:23,576 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:34:23,576 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:34:23,576 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:34:23,576 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:34:23,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:34:23,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:34:23,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:34:23,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:34:23,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:34:23,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:34:23,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:34:23,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:34:23,579 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:34:23,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:34:23,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:34:23,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:34:23,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:34:23,580 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:34:23,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:34:23,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:34:23,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:34:23,581 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:34:23,582 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:34:23,582 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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.graphml 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 -> d8654406b0017787fa4ace126fd130560d0ff458 [2020-10-20 06:34:23,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:34:23,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:34:23,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:34:23,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:34:23,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:34:23,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-10-20 06:34:23,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d175461a/533893b4697f43b7a16171ce83731680/FLAG87c3518ce [2020-10-20 06:34:24,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:34:24,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-10-20 06:34:24,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d175461a/533893b4697f43b7a16171ce83731680/FLAG87c3518ce [2020-10-20 06:34:24,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d175461a/533893b4697f43b7a16171ce83731680 [2020-10-20 06:34:24,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:34:24,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:34:24,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:24,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:34:24,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:34:24,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:24" (1/1) ... [2020-10-20 06:34:24,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559038d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:24, skipping insertion in model container [2020-10-20 06:34:24,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:34:24" (1/1) ... [2020-10-20 06:34:24,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:34:24,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:34:24,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:24,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:34:25,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:34:25,025 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:34:25,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25 WrapperNode [2020-10-20 06:34:25,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:34:25,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:25,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:34:25,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:34:25,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:34:25,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:34:25,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:34:25,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:34:25,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... [2020-10-20 06:34:25,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:34:25,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:34:25,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:34:25,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:34:25,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:34:25,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:34:25,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:34:25,423 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:34:25,424 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 06:34:25,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:25 BoogieIcfgContainer [2020-10-20 06:34:25,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:34:25,427 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:34:25,428 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:34:25,433 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:34:25,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:25,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:34:24" (1/3) ... [2020-10-20 06:34:25,436 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eff377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:25, skipping insertion in model container [2020-10-20 06:34:25,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:25,437 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:34:25" (2/3) ... [2020-10-20 06:34:25,438 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eff377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:34:25, skipping insertion in model container [2020-10-20 06:34:25,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:34:25,438 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:25" (3/3) ... [2020-10-20 06:34:25,440 INFO L373 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-10-20 06:34:25,507 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:34:25,508 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:34:25,511 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:34:25,511 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:34:25,512 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:34:25,512 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:34:25,512 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:34:25,512 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:34:25,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2020-10-20 06:34:25,572 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-10-20 06:34:25,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:25,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:25,581 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:34:25,582 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:34:25,582 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:34:25,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2020-10-20 06:34:25,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-10-20 06:34:25,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:34:25,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:34:25,586 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:34:25,586 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:34:25,595 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue ~LOCK~0 := 0; 7#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~post3, main_#t~nondet1, main_#t~nondet4, main_#t~post5, main_~got_lock~0, main_~old~0, main_~new~0;havoc main_~got_lock~0;main_~old~0 := 0;main_~new~0 := 0; 17#L34true assume 0 != main_#t~nondet0;havoc main_#t~nondet0; 10#L35-3true [2020-10-20 06:34:25,596 INFO L796 eck$LassoCheckResult]: Loop: 10#L35-3true main_~got_lock~0 := 0; 4#L37true assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 20#L37-2true assume !(0 != main_~got_lock~0); 18#L35-1true assume !!(0 != main_#t~nondet1);havoc main_#t~nondet1; 10#L35-3true [2020-10-20 06:34:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-10-20 06:34:25,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:25,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099948754] [2020-10-20 06:34:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,751 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:25,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1212883, now seen corresponding path program 1 times [2020-10-20 06:34:25,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:25,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146479312] [2020-10-20 06:34:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:34:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1804975604, now seen corresponding path program 1 times [2020-10-20 06:34:25,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:34:25,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751344185] [2020-10-20 06:34:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:34:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:34:25,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:34:25,790 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:34:25,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:34:25 BoogieIcfgContainer [2020-10-20 06:34:25,924 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:34:25,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:34:25,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:34:25,925 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:34:25,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:34:25" (3/4) ... [2020-10-20 06:34:25,929 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:34:26,037 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:34:26,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:34:26,046 INFO L168 Benchmark]: Toolchain (without parser) took 1367.90 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 17.4 MB in the beginning and 16.9 MB in the end (delta: 511.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,047 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory is still 10.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:34:26,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.49 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 16.5 MB in the beginning and 27.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 44.6 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,056 INFO L168 Benchmark]: Boogie Preprocessor took 39.50 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 24.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,057 INFO L168 Benchmark]: RCFGBuilder took 314.33 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.3 MB in the beginning and 24.8 MB in the end (delta: -473.2 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,061 INFO L168 Benchmark]: BuchiAutomizer took 496.61 ms. Allocated memory is still 46.7 MB. Free memory was 24.8 MB in the beginning and 18.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,062 INFO L168 Benchmark]: Witness Printer took 113.06 ms. Allocated memory is still 46.7 MB. Free memory was 18.7 MB in the beginning and 16.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:34:26,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory is still 10.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 346.49 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 16.5 MB in the beginning and 27.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.54 ms. Allocated memory is still 44.6 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 39.50 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 24.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 314.33 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.3 MB in the beginning and 24.8 MB in the end (delta: -473.2 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 496.61 ms. Allocated memory is still 46.7 MB. Free memory was 24.8 MB in the beginning and 18.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 14.3 GB. * Witness Printer took 113.06 ms. Allocated memory is still 46.7 MB. Free memory was 18.7 MB in the beginning and 16.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * 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: No data available 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {got_lock=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@212f7872=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d7a6011=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68c86ed7=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4583f2ea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2ae2ea70=0, new=0, old=0, LOCK=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@702016eb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; [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! Received shutdown request...