./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-28 02:56:55,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:55,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:55,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:55,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:55,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:55,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:55,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:55,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:55,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:55,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:55,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:55,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:55,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:55,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:55,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:55,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:55,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:55,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:55,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:55,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:55,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:55,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:55,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:55,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:55,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:55,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:55,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:55,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:55,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:55,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:55,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:55,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:55,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:55,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:55,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:55,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:55,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:55,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:55,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:55,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:55,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:56:55,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:55,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:55,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:55,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:55,250 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:55,250 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:55,250 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:55,250 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:55,251 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:55,251 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:55,251 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:55,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:55,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:55,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:55,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:55,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:55,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:55,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:55,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:55,253 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:55,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:55,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:55,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:55,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:55,254 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:55,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:55,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:55,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:55,255 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:55,256 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:55,257 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:/tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8654406b0017787fa4ace126fd130560d0ff458 [2020-11-28 02:56:55,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:55,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:55,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:55,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:55,558 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:55,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-11-28 02:56:55,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/data/17477b600/d9ec6a398d5a4acdbacbd9f102c122d2/FLAGeec19fb8d [2020-11-28 02:56:56,128 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:56,129 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-11-28 02:56:56,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/data/17477b600/d9ec6a398d5a4acdbacbd9f102c122d2/FLAGeec19fb8d [2020-11-28 02:56:56,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/data/17477b600/d9ec6a398d5a4acdbacbd9f102c122d2 [2020-11-28 02:56:56,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:56,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:56,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:56,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:56,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:56,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6394a271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56, skipping insertion in model container [2020-11-28 02:56:56,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:56,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:56,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:56,702 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:56,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:56,756 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:56,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56 WrapperNode [2020-11-28 02:56:56,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:56,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:56,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:56,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:56,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:56,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:56,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:56,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:56,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... [2020-11-28 02:56:56,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:56,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:56,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:56,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:56,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/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 [2020-11-28 02:56:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:56,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:57,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:57,270 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 02:56:57,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57 BoogieIcfgContainer [2020-11-28 02:56:57,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:57,273 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:57,274 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:57,277 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:57,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:57,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:56" (1/3) ... [2020-11-28 02:56:57,280 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63bebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:57, skipping insertion in model container [2020-11-28 02:56:57,280 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:57,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:56" (2/3) ... [2020-11-28 02:56:57,281 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63bebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:57, skipping insertion in model container [2020-11-28 02:56:57,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:57,281 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57" (3/3) ... [2020-11-28 02:56:57,284 INFO L373 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2020-11-28 02:56:57,361 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:57,361 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:57,362 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:57,362 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:57,362 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:57,362 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:57,362 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:57,362 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:57,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2020-11-28 02:56:57,399 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-11-28 02:56:57,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:57,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:57,405 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:56:57,406 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:57,406 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:57,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2020-11-28 02:56:57,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2020-11-28 02:56:57,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:57,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:57,411 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:56:57,411 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:57,418 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 [2020-11-28 02:56:57,419 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 [2020-11-28 02:56:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-11-28 02:56:57,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:57,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059227745] [2020-11-28 02:56:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,551 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:57,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1212883, now seen corresponding path program 1 times [2020-11-28 02:56:57,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:57,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901163183] [2020-11-28 02:56:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1804975604, now seen corresponding path program 1 times [2020-11-28 02:56:57,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:57,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189491181] [2020-11-28 02:56:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:57,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:57,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:57,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:57 BoogieIcfgContainer [2020-11-28 02:56:57,800 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:57,804 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:57,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:57,804 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:57,805 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:57" (3/4) ... [2020-11-28 02:56:57,807 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 02:56:57,857 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fd6ba1d-4c7e-4d4f-875c-e899d90d0862/bin/uautomizer/witness.graphml [2020-11-28 02:56:57,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:57,860 INFO L168 Benchmark]: Toolchain (without parser) took 1350.57 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 51.5 MB in the end (delta: 26.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,861 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:57,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.48 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 86.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:57,866 INFO L168 Benchmark]: Boogie Preprocessor took 34.26 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,867 INFO L168 Benchmark]: RCFGBuilder took 439.87 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 73.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,871 INFO L168 Benchmark]: BuchiAutomizer took 526.73 ms. Allocated memory is still 109.1 MB. Free memory was 72.5 MB in the beginning and 53.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,872 INFO L168 Benchmark]: Witness Printer took 54.77 ms. Allocated memory is still 109.1 MB. Free memory was 53.1 MB in the beginning and 51.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:57,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.48 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 86.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.26 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 439.87 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 73.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 526.73 ms. Allocated memory is still 109.1 MB. Free memory was 72.5 MB in the beginning and 53.5 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 54.77 ms. Allocated memory is still 109.1 MB. Free memory was 53.1 MB in the beginning and 51.5 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 0.4s 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@321efba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e05bbb0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cad2b98=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51f0dce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@217d2ab6=0, new=0, old=0, LOCK=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7b254fbe=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...