./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/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 3a668603f73a848e02f189ca3bd9be8e08411aae .................................................................................................................................................................................................................................................................................... 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 [2020-11-29 19:08:55,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:08:55,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:08:55,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:08:55,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:08:55,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:08:55,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:08:55,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:08:55,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:08:55,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:08:55,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:08:55,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:08:55,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:08:55,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:08:55,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:08:55,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:08:55,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:08:55,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:08:55,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:08:55,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:08:55,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:08:55,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:08:55,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:08:55,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:08:55,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:08:55,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:08:55,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:08:55,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:08:55,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:08:55,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:08:55,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:08:55,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:08:55,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:08:55,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:08:55,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:08:55,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:08:55,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:08:55,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:08:55,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:08:55,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:08:55,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:08:55,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:08:55,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:08:55,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:08:55,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:08:55,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:08:55,320 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:08:55,320 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:08:55,320 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:08:55,321 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:08:55,321 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:08:55,321 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:08:55,323 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:08:55,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:08:55,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:08:55,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:08:55,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:08:55,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:08:55,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:08:55,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:08:55,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:08:55,325 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:08:55,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:08:55,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:08:55,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:08:55,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:08:55,327 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:08:55,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:08:55,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:08:55,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:08:55,332 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:08:55,335 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:08:55,336 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_d59d8893-3a52-4819-9de6-11961620bbd7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a668603f73a848e02f189ca3bd9be8e08411aae [2020-11-29 19:08:55,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:08:55,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:08:55,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:08:55,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:08:55,744 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:08:55,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2020-11-29 19:08:55,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/data/594b24cc8/e9095cbbbcc24c1380373f5bb4b2d418/FLAG57efc457f [2020-11-29 19:08:56,475 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:08:56,476 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2020-11-29 19:08:56,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/data/594b24cc8/e9095cbbbcc24c1380373f5bb4b2d418/FLAG57efc457f [2020-11-29 19:08:56,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/data/594b24cc8/e9095cbbbcc24c1380373f5bb4b2d418 [2020-11-29 19:08:56,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:08:56,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:08:56,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:08:56,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:08:56,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:08:56,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:56" (1/1) ... [2020-11-29 19:08:56,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fabda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:56, skipping insertion in model container [2020-11-29 19:08:56,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:56" (1/1) ... [2020-11-29 19:08:56,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:08:56,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:08:57,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:08:57,081 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:08:57,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:08:57,157 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:08:57,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57 WrapperNode [2020-11-29 19:08:57,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:08:57,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:08:57,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:08:57,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:08:57,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:08:57,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:08:57,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:08:57,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:08:57,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... [2020-11-29 19:08:57,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:08:57,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:08:57,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:08:57,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:08:57,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/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 [2020-11-29 19:08:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:08:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:08:57,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:08:57,498 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:08:57,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:57 BoogieIcfgContainer [2020-11-29 19:08:57,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:08:57,501 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:08:57,502 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:08:57,515 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:08:57,517 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:57,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:08:56" (1/3) ... [2020-11-29 19:08:57,520 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ea3ac5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:08:57, skipping insertion in model container [2020-11-29 19:08:57,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:57,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:57" (2/3) ... [2020-11-29 19:08:57,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ea3ac5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:08:57, skipping insertion in model container [2020-11-29 19:08:57,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:08:57,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:57" (3/3) ... [2020-11-29 19:08:57,523 INFO L373 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2020-11-29 19:08:57,591 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:08:57,591 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:08:57,591 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:08:57,592 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:08:57,592 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:08:57,608 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:08:57,608 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:08:57,608 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:08:57,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 19:08:57,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 19:08:57,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:57,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:57,701 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:08:57,701 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:57,701 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:08:57,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 19:08:57,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 19:08:57,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:08:57,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:08:57,704 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:08:57,704 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:08:57,727 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2020-11-29 19:08:57,727 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != main_~y~0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 7#L17true assume main_~x~0 <= 0 || main_~y~0 <= 0;main_~y~0 := 0; 11#L23-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 6#L13-2true [2020-11-29 19:08:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:08:57,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:57,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37156615] [2020-11-29 19:08:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,870 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2020-11-29 19:08:57,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:57,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872527160] [2020-11-29 19:08:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,895 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:08:57,898 INFO L82 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2020-11-29 19:08:57,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:08:57,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89483839] [2020-11-29 19:08:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:08:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:08:57,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:08:57,964 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:08:58,090 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 19:08:58,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:08:58 BoogieIcfgContainer [2020-11-29 19:08:58,237 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:08:58,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:08:58,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:08:58,238 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:08:58,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:57" (3/4) ... [2020-11-29 19:08:58,243 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:08:58,318 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d59d8893-3a52-4819-9de6-11961620bbd7/bin/uautomizer/witness.graphml [2020-11-29 19:08:58,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:08:58,320 INFO L168 Benchmark]: Toolchain (without parser) took 1493.40 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 47.7 MB in the beginning and 68.3 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:58,320 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:58,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.51 ms. Allocated memory is still 83.9 MB. Free memory was 47.5 MB in the beginning and 62.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:58,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.27 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 61.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:58,322 INFO L168 Benchmark]: Boogie Preprocessor took 22.90 ms. Allocated memory is still 83.9 MB. Free memory was 61.1 MB in the beginning and 60.2 MB in the end (delta: 877.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:58,323 INFO L168 Benchmark]: RCFGBuilder took 267.84 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 51.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:58,324 INFO L168 Benchmark]: BuchiAutomizer took 735.33 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 70.0 MB in the end (delta: -18.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:58,324 INFO L168 Benchmark]: Witness Printer took 80.34 ms. Allocated memory is still 100.7 MB. Free memory was 70.0 MB in the beginning and 68.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:58,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 83.9 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.51 ms. Allocated memory is still 83.9 MB. Free memory was 47.5 MB in the beginning and 62.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.27 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 61.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.90 ms. Allocated memory is still 83.9 MB. Free memory was 61.1 MB in the beginning and 60.2 MB in the end (delta: 877.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 267.84 ms. Allocated memory is still 83.9 MB. Free memory was 60.0 MB in the beginning and 51.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 735.33 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 70.0 MB in the end (delta: -18.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.34 ms. Allocated memory is still 100.7 MB. Free memory was 70.0 MB in the beginning and 68.3 MB in the end (delta: 1.7 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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: 13]: 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 {xtmp=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ee30f4f=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7121b242=0, x=-1, y=-1} - 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! Received shutdown request...