./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 8d31f386 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_1.5.800.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 ../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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:17:07,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:17:07,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:17:07,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:17:07,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:17:07,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:17:07,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:17:07,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:17:07,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:17:07,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:17:07,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:17:07,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:17:07,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:17:07,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:17:07,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:17:07,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:17:07,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:17:07,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:17:07,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:17:07,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:17:07,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:17:07,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:17:07,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:17:07,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:17:07,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:17:07,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:17:07,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:17:07,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:17:07,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:17:07,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:17:07,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:17:07,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:17:07,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:17:07,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:17:07,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:17:07,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:17:07,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:17:07,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:17:07,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:17:07,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:17:07,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:17:07,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:17:07,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:17:07,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:17:07,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:17:07,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:17:07,598 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:17:07,598 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:17:07,599 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:17:07,599 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:17:07,599 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:17:07,599 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:17:07,599 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:17:07,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:17:07,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:17:07,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:17:07,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:17:07,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:17:07,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:17:07,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:17:07,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:17:07,601 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:17:07,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:17:07,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:17:07,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:17:07,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:17:07,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:17:07,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:17:07,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:17:07,604 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:17:07,604 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8654406b0017787fa4ace126fd130560d0ff458 [2021-07-06 18:17:07,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:17:07,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:17:07,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:17:07,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:17:07,906 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:17:07,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-07-06 18:17:07,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ddd40a/3c8a5df81c774b519351fc2264936527/FLAGf98c0ffcc [2021-07-06 18:17:08,397 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:17:08,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-07-06 18:17:08,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ddd40a/3c8a5df81c774b519351fc2264936527/FLAGf98c0ffcc [2021-07-06 18:17:08,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/808ddd40a/3c8a5df81c774b519351fc2264936527 [2021-07-06 18:17:08,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:17:08,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:17:08,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:17:08,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:17:08,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:17:08,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:08,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4012d7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08, skipping insertion in model container [2021-07-06 18:17:08,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:08,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:17:08,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:17:08,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:17:08,963 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:17:08,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:17:08,987 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:17:08,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08 WrapperNode [2021-07-06 18:17:08,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:17:08,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:17:08,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:17:08,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:17:08,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:17:09,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:17:09,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:17:09,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:17:09,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:17:09,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:17:09,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:17:09,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:17:09,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (1/1) ... [2021-07-06 18:17:09,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:17:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:17:09,082 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) [2021-07-06 18:17:09,111 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 [2021-07-06 18:17:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:17:09,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:17:09,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:17:09,363 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-07-06 18:17:09,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:17:09 BoogieIcfgContainer [2021-07-06 18:17:09,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:17:09,366 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:17:09,366 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:17:09,368 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:17:09,369 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:17:09,369 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:17:08" (1/3) ... [2021-07-06 18:17:09,370 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25dac8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:17:09, skipping insertion in model container [2021-07-06 18:17:09,370 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:17:09,370 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:17:08" (2/3) ... [2021-07-06 18:17:09,371 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25dac8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:17:09, skipping insertion in model container [2021-07-06 18:17:09,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:17:09,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:17:09" (3/3) ... [2021-07-06 18:17:09,386 INFO L389 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-07-06 18:17:09,438 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:17:09,439 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:17:09,439 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:17:09,439 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:17:09,439 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:17:09,439 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:17:09,439 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:17:09,439 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:17:09,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2021-07-06 18:17:09,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-07-06 18:17:09,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:17:09,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:17:09,487 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 18:17:09,487 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 18:17:09,487 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:17:09,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2021-07-06 18:17:09,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-07-06 18:17:09,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:17:09,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:17:09,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 18:17:09,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 18:17:09,498 INFO L791 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 [2021-07-06 18:17:09,498 INFO L793 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 [2021-07-06 18:17:09,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:17:09,508 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-07-06 18:17:09,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:17:09,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688725838] [2021-07-06 18:17:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:17:09,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:17:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,570 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,574 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,585 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:17:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:17:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1212883, now seen corresponding path program 1 times [2021-07-06 18:17:09,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:17:09,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595506819] [2021-07-06 18:17:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:17:09,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:17:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,594 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,596 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,597 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:17:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:17:09,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1804975604, now seen corresponding path program 1 times [2021-07-06 18:17:09,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:17:09,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203549553] [2021-07-06 18:17:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:17:09,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:17:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,604 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:17:09,608 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:17:09,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:17:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:17:09,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:17:09,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:17:09,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-06 18:17:09,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:17:09 BoogieIcfgContainer [2021-07-06 18:17:09,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:17:09,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:17:09,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:17:09,740 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:17:09,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:17:09" (3/4) ... [2021-07-06 18:17:09,743 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:17:09,768 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:17:09,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:17:09,770 INFO L168 Benchmark]: Toolchain (without parser) took 945.70 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 39.4 MB in the end (delta: -11.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:17:09,770 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:17:09,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.74 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 29.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.10 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 44.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,772 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.7 MB in the end (delta: 942.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,773 INFO L168 Benchmark]: RCFGBuilder took 307.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 32.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,773 INFO L168 Benchmark]: BuchiAutomizer took 373.74 ms. Allocated memory is still 60.8 MB. Free memory was 32.1 MB in the beginning and 40.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,774 INFO L168 Benchmark]: Witness Printer took 28.80 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:17:09,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 159.74 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 29.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.10 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.9 MB in the beginning and 44.6 MB in the end (delta: -14.8 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 43.7 MB in the end (delta: 942.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 307.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 32.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 373.74 ms. Allocated memory is still 60.8 MB. Free memory was 32.1 MB in the beginning and 40.9 MB in the end (delta: -8.8 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 28.80 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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@4384efb4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b6a9ed1=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e641d85=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e708416=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3b9d8ac7=0, new=0, old=0, LOCK=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2dc0837c=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! [2021-07-06 18:17:09,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...