./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a --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 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:50:34,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:50:34,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:50:34,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:50:34,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:50:34,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:50:34,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:50:34,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:50:34,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:50:34,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:50:34,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:50:34,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:50:34,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:50:34,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:50:34,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:50:34,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:50:34,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:50:34,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:50:34,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:50:34,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:50:34,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:50:34,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:50:34,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:50:34,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:50:34,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:50:34,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:50:34,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:50:34,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:50:34,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:50:34,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:50:34,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:50:34,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:50:34,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:50:34,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:50:34,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:50:34,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:50:34,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:50:34,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:50:34,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:50:34,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:50:34,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:50:34,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 16:50:34,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:50:34,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:50:34,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:50:34,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:50:34,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:50:34,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:50:34,380 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:50:34,381 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 16:50:34,381 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 16:50:34,381 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 16:50:34,381 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 16:50:34,381 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 16:50:34,382 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 16:50:34,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:50:34,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:50:34,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:50:34,383 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 16:50:34,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:50:34,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 16:50:34,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:50:34,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:50:34,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:50:34,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:50:34,386 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 16:50:34,386 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_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2022-11-21 16:50:34,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:50:34,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:50:34,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:50:34,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:50:34,793 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:50:34,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-21 16:50:38,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:50:38,692 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:50:38,692 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-21 16:50:38,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/data/fa1df72b3/ac4f2f8fcbfd4c9995f3b4dfbac3fb15/FLAG62059aa2b [2022-11-21 16:50:38,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/data/fa1df72b3/ac4f2f8fcbfd4c9995f3b4dfbac3fb15 [2022-11-21 16:50:38,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:50:38,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:50:38,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:50:38,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:50:38,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:50:38,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:50:38" (1/1) ... [2022-11-21 16:50:38,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45960c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:38, skipping insertion in model container [2022-11-21 16:50:38,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:50:38" (1/1) ... [2022-11-21 16:50:38,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:50:38,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:50:39,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:50:39,009 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:50:39,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:50:39,043 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:50:39,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39 WrapperNode [2022-11-21 16:50:39,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:50:39,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:50:39,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:50:39,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:50:39,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,082 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-21 16:50:39,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:50:39,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:50:39,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:50:39,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:50:39,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:50:39,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:50:39,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:50:39,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:50:39,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (1/1) ... [2022-11-21 16:50:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:50:39,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:39,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:50:39,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 16:50:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:50:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:50:39,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:50:39,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:50:39,399 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:50:39,407 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:50:39,407 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:50:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:39 BoogieIcfgContainer [2022-11-21 16:50:39,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:50:39,410 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 16:50:39,410 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 16:50:39,416 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 16:50:39,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:50:39,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 04:50:38" (1/3) ... [2022-11-21 16:50:39,418 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55033ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:50:39, skipping insertion in model container [2022-11-21 16:50:39,418 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:50:39,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:50:39" (2/3) ... [2022-11-21 16:50:39,419 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55033ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:50:39, skipping insertion in model container [2022-11-21 16:50:39,419 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:50:39,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:39" (3/3) ... [2022-11-21 16:50:39,421 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2022-11-21 16:50:39,490 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 16:50:39,490 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 16:50:39,491 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 16:50:39,491 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 16:50:39,491 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 16:50:39,491 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 16:50:39,491 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 16:50:39,492 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 16:50:39,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-11-21 16:50:39,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 16:50:39,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:50:39,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:50:39,525 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:50:39,526 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 16:50:39,526 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 16:50:39,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-11-21 16:50:39,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 16:50:39,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:50:39,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:50:39,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:50:39,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 16:50:39,536 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L13-2true [2022-11-21 16:50:39,537 INFO L750 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != main_~y~0#1);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17true assume main_~x~0#1 <= 0 || main_~y~0#1 <= 0;main_~y~0#1 := 0; 9#L23-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 6#L13-2true [2022-11-21 16:50:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 16:50:39,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:39,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538145867] [2022-11-21 16:50:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:39,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:50:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:50:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash 40830, now seen corresponding path program 1 times [2022-11-21 16:50:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:39,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864386633] [2022-11-21 16:50:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:50:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:50:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash 28699772, now seen corresponding path program 1 times [2022-11-21 16:50:39,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:39,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671871076] [2022-11-21 16:50:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:39,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:50:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:39,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:50:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:40,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:50:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:50:40,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 04:50:40 BoogieIcfgContainer [2022-11-21 16:50:40,207 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 16:50:40,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:50:40,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:50:40,208 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:50:40,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:50:39" (3/4) ... [2022-11-21 16:50:40,212 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 16:50:40,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:50:40,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:50:40,253 INFO L158 Benchmark]: Toolchain (without parser) took 1492.04ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 123.2MB in the end (delta: 9.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-11-21 16:50:40,253 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:50:40,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.63ms. Allocated memory is still 161.5MB. Free memory was 132.2MB in the beginning and 124.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-21 16:50:40,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.92ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 123.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:50:40,255 INFO L158 Benchmark]: Boogie Preprocessor took 27.29ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 122.5MB in the end (delta: 665.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:50:40,256 INFO L158 Benchmark]: RCFGBuilder took 294.91ms. Allocated memory is still 161.5MB. Free memory was 122.5MB in the beginning and 113.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:50:40,257 INFO L158 Benchmark]: BuchiAutomizer took 796.88ms. Allocated memory is still 161.5MB. Free memory was 113.4MB in the beginning and 125.2MB in the end (delta: -11.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:50:40,258 INFO L158 Benchmark]: Witness Printer took 42.92ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 123.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:50:40,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.63ms. Allocated memory is still 161.5MB. Free memory was 132.2MB in the beginning and 124.6MB in the end (delta: 7.6MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.92ms. Allocated memory is still 161.5MB. Free memory was 124.6MB in the beginning and 123.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.29ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 122.5MB in the end (delta: 665.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 294.91ms. Allocated memory is still 161.5MB. Free memory was 122.5MB in the beginning and 113.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 796.88ms. Allocated memory is still 161.5MB. Free memory was 113.4MB in the beginning and 125.2MB in the end (delta: -11.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.92ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 123.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-21 16:50:40,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227f2ebd-6a40-4671-b532-379b640c6b8f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)