./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.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_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/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_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/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_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/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 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb --- 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 16:08:23,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:08:23,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:08:23,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:08:23,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:08:23,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:08:23,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:08:23,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:08:23,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:08:23,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:08:23,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:08:23,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:08:23,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:08:23,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:08:23,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:08:23,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:08:23,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:08:23,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:08:23,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:08:23,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:08:23,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:08:23,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:08:23,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:08:23,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:08:23,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:08:23,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:08:23,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:08:23,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:08:23,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:08:23,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:08:23,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:08:23,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:08:23,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:08:23,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:08:23,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:08:23,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:08:23,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:08:23,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:08:23,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:08:23,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:08:23,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:08:23,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 16:08:23,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:08:23,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:08:23,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:08:23,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:08:23,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:08:23,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:08:23,524 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:08:23,524 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 16:08:23,524 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 16:08:23,524 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 16:08:23,525 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 16:08:23,525 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 16:08:23,525 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 16:08:23,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:08:23,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:08:23,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:08:23,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:08:23,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 16:08:23,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 16:08:23,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 16:08:23,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:08:23,527 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 16:08:23,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:08:23,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 16:08:23,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:08:23,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:08:23,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:08:23,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:08:23,529 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 16:08:23,530 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_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb [2022-11-21 16:08:23,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:08:23,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:08:23,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:08:23,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:08:23,888 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:08:23,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2022-11-21 16:08:26,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:08:27,218 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:08:27,219 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2022-11-21 16:08:27,226 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/data/eacb8cb44/301fe3b9bfee4c1da38c691fb08a5df8/FLAG72e2955ec [2022-11-21 16:08:27,242 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/data/eacb8cb44/301fe3b9bfee4c1da38c691fb08a5df8 [2022-11-21 16:08:27,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:08:27,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:08:27,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:27,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:08:27,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:08:27,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0ae2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27, skipping insertion in model container [2022-11-21 16:08:27,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:08:27,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:08:27,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:27,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:08:27,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:27,483 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:08:27,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27 WrapperNode [2022-11-21 16:08:27,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:27,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:27,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:08:27,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:08:27,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,516 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-11-21 16:08:27,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:27,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:08:27,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:08:27,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:08:27,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:08:27,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:08:27,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:08:27,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:08:27,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (1/1) ... [2022-11-21 16:08:27,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 16:08:27,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:27,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 16:08:27,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 16:08:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:08:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:08:27,689 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:08:27,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:08:27,756 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:08:27,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:08:27,763 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:08:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:27 BoogieIcfgContainer [2022-11-21 16:08:27,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:08:27,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 16:08:27,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 16:08:27,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 16:08:27,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:08:27,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 04:08:27" (1/3) ... [2022-11-21 16:08:27,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18aa48a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:08:27, skipping insertion in model container [2022-11-21 16:08:27,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:08:27,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:27" (2/3) ... [2022-11-21 16:08:27,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18aa48a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 04:08:27, skipping insertion in model container [2022-11-21 16:08:27,775 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 16:08:27,775 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:27" (3/3) ... [2022-11-21 16:08:27,777 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2022-11-21 16:08:27,831 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 16:08:27,831 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 16:08:27,831 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 16:08:27,831 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 16:08:27,832 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 16:08:27,832 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 16:08:27,832 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 16:08:27,832 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 16:08:27,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 16:08:27,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 16:08:27,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:08:27,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:08:27,863 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:08:27,863 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 16:08:27,863 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 16:08:27,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 16:08:27,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 16:08:27,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 16:08:27,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 16:08:27,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 16:08:27,865 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 16:08:27,874 INFO L748 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 7#L18-2true [2022-11-21 16:08:27,874 INFO L750 eck$LassoCheckResult]: Loop: 7#L18-2true assume !!(main_~x~0#1 <= 10); 4#L18true assume !(main_~x~0#1 > 6); 7#L18-2true [2022-11-21 16:08:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 16:08:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:27,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344145013] [2022-11-21 16:08:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:27,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:27,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:08:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:27,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:08:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-21 16:08:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:27,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857653244] [2022-11-21 16:08:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:27,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:08:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:27,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:08:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-21 16:08:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:27,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207342257] [2022-11-21 16:08:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:28,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:08:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:28,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:08:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:28,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:08:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:08:28,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 04:08:28 BoogieIcfgContainer [2022-11-21 16:08:28,109 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 16:08:28,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:08:28,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:08:28,111 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:08:28,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:27" (3/4) ... [2022-11-21 16:08:28,115 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-21 16:08:28,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:08:28,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:08:28,195 INFO L158 Benchmark]: Toolchain (without parser) took 947.72ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 101.1MB in the end (delta: 21.2MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-11-21 16:08:28,196 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:28,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.67ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 129.0MB in the end (delta: -6.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:08:28,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.64ms. Allocated memory is still 161.5MB. Free memory was 129.0MB in the beginning and 128.3MB in the end (delta: 659.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:28,198 INFO L158 Benchmark]: Boogie Preprocessor took 20.55ms. Allocated memory is still 161.5MB. Free memory was 127.6MB in the beginning and 126.9MB in the end (delta: 719.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:28,199 INFO L158 Benchmark]: RCFGBuilder took 227.37ms. Allocated memory is still 161.5MB. Free memory was 126.9MB in the beginning and 117.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:08:28,199 INFO L158 Benchmark]: BuchiAutomizer took 342.90ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 102.5MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 16:08:28,200 INFO L158 Benchmark]: Witness Printer took 83.09ms. Allocated memory is still 161.5MB. Free memory was 102.5MB in the beginning and 101.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:28,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.67ms. Allocated memory is still 161.5MB. Free memory was 122.3MB in the beginning and 129.0MB in the end (delta: -6.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.64ms. Allocated memory is still 161.5MB. Free memory was 129.0MB in the beginning and 128.3MB in the end (delta: 659.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.55ms. Allocated memory is still 161.5MB. Free memory was 127.6MB in the beginning and 126.9MB in the end (delta: 719.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 227.37ms. Allocated memory is still 161.5MB. Free memory was 126.9MB in the beginning and 117.8MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 342.90ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 102.5MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 83.09ms. Allocated memory is still 161.5MB. Free memory was 102.5MB in the beginning and 101.1MB in the end (delta: 1.4MB). There was no memory consumed. 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() Loop: [L17] COND TRUE x <= 10 [L18] COND FALSE !(x > 6) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() Loop: [L17] COND TRUE x <= 10 [L18] COND FALSE !(x > 6) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-21 16:08:28,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd8fb27-3367-4d9e-94d1-b9c7df907f43/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)