./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-04-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b 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_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-04-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro --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 f815f3ab50b7f44d2a4cc7a3cc9776599ba436b7ffe87c8d1b9c4b6bd093d6ef --- 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-8393723 [2022-11-18 19:42:21,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:42:21,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:42:21,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:42:21,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:42:21,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:42:21,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:42:21,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:42:21,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:42:21,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:42:21,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:42:21,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:42:21,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:42:21,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:42:21,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:42:21,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:42:21,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:42:21,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:42:21,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:42:21,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:42:21,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:42:21,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:42:21,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:42:21,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:42:21,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:42:21,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:42:21,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:42:21,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:42:21,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:42:21,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:42:21,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:42:21,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:42:21,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:42:21,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:42:21,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:42:21,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:42:21,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:42:21,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:42:21,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:42:21,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:42:21,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:42:21,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 19:42:21,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:42:21,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:42:21,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:42:21,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:42:21,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:42:21,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:42:21,385 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:42:21,385 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 19:42:21,386 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 19:42:21,386 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 19:42:21,388 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 19:42:21,388 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 19:42:21,388 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 19:42:21,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:42:21,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:42:21,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:42:21,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:42:21,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 19:42:21,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 19:42:21,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 19:42:21,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:42:21,391 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 19:42:21,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:42:21,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 19:42:21,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:42:21,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:42:21,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:42:21,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:42:21,394 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 19:42:21,395 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_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f815f3ab50b7f44d2a4cc7a3cc9776599ba436b7ffe87c8d1b9c4b6bd093d6ef [2022-11-18 19:42:21,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:42:21,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:42:21,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:42:21,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:42:21,802 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:42:21,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-bwb/not-04-false.c [2022-11-18 19:42:21,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/data/d1efde966/f9b9bbaa0a4d4c12b56aa447d5a7181d/FLAG2746e9428 [2022-11-18 19:42:22,576 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:42:22,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/sv-benchmarks/c/termination-bwb/not-04-false.c [2022-11-18 19:42:22,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/data/d1efde966/f9b9bbaa0a4d4c12b56aa447d5a7181d/FLAG2746e9428 [2022-11-18 19:42:22,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/data/d1efde966/f9b9bbaa0a4d4c12b56aa447d5a7181d [2022-11-18 19:42:22,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:42:22,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:42:22,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:22,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:42:22,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:42:22,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:22" (1/1) ... [2022-11-18 19:42:22,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b316f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:22, skipping insertion in model container [2022-11-18 19:42:22,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:22" (1/1) ... [2022-11-18 19:42:22,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:42:22,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:42:23,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:23,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:42:23,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:23,259 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:42:23,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23 WrapperNode [2022-11-18 19:42:23,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:23,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:23,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:42:23,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:42:23,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,303 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 19:42:23,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:23,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:42:23,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:42:23,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:42:23,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:42:23,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:42:23,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:42:23,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:42:23,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (1/1) ... [2022-11-18 19:42:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:23,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:23,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:23,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 19:42:23,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:42:23,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:42:23,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:42:23,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:42:23,673 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:42:23,681 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:42:23,682 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:42:23,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:23 BoogieIcfgContainer [2022-11-18 19:42:23,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:42:23,686 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 19:42:23,686 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 19:42:23,692 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 19:42:23,693 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:42:23,693 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 07:42:22" (1/3) ... [2022-11-18 19:42:23,694 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6628ceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:42:23, skipping insertion in model container [2022-11-18 19:42:23,695 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:42:23,695 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:23" (2/3) ... [2022-11-18 19:42:23,695 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6628ceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 07:42:23, skipping insertion in model container [2022-11-18 19:42:23,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 19:42:23,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:23" (3/3) ... [2022-11-18 19:42:23,698 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-04-false.c [2022-11-18 19:42:23,784 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 19:42:23,784 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 19:42:23,784 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 19:42:23,785 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 19:42:23,785 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 19:42:23,785 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 19:42:23,785 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 19:42:23,786 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 19:42:23,795 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) [2022-11-18 19:42:23,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-18 19:42:23,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:42:23,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:42:23,831 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 19:42:23,831 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 19:42:23,831 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 19:42:23,832 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) [2022-11-18 19:42:23,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-18 19:42:23,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 19:42:23,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 19:42:23,834 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 19:42:23,834 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 19:42:23,843 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#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_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~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;main_~a~0#1 := 0; 6#L18-2true [2022-11-18 19:42:23,844 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 < 0); 4#L18true assume !(main_~x~0#1 < 0 && main_~y~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 6#L18-2true [2022-11-18 19:42:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 19:42:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:23,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286761997] [2022-11-18 19:42:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:23,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:23,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:42:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:24,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:42:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-18 19:42:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152051867] [2022-11-18 19:42:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:24,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:42:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:24,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:42:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-18 19:42:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453285340] [2022-11-18 19:42:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:24,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:42:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:42:24,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:42:24,275 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:42:24,276 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:42:24,276 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:42:24,276 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:42:24,276 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:42:24,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,277 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:42:24,277 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:42:24,277 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Loop [2022-11-18 19:42:24,277 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:42:24,277 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:42:24,314 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,328 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:42:24,381 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:42:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 19:42:24,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,464 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:24,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 19:42:24,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 19:42:24,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:42:24,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [9, 1, 4] Nus: [0, 1] [2022-11-18 19:42:24,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,611 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 19:42:24,611 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 19:42:24,611 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 19:42:24,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 19:42:24,612 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 19:42:24,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 19:42:24,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 19:42:24,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-04-false.c_Iteration1_Lasso [2022-11-18 19:42:24,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 19:42:24,613 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 19:42:24,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,623 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,627 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,635 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,644 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 19:42:24,699 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 19:42:24,699 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 19:42:24,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 19:42:24,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:24,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 19:42:24,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:24,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 19:42:24,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,877 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 19:42:24,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:24,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:24,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:24,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:24,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 19:42:24,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:24,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:24,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:24,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 19:42:24,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:25,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 19:42:25,047 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:25,047 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [9, 1, 4] Nus: [0, 1] [2022-11-18 19:42:25,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:25,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 19:42:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:25,061 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:25,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 19:42:25,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 19:42:25,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 19:42:25,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 19:42:25,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 19:42:25,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:25,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 07:42:25 BoogieIcfgContainer [2022-11-18 19:42:25,173 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 19:42:25,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:42:25,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:42:25,174 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:42:25,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:23" (3/4) ... [2022-11-18 19:42:25,178 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 19:42:25,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:42:25,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:42:25,234 INFO L158 Benchmark]: Toolchain (without parser) took 2275.94ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 85.8MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:42:25,235 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:42:25,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.74ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 88.8MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:42:25,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.05ms. Allocated memory is still 111.1MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:42:25,237 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.6MB in the end (delta: 893.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:42:25,237 INFO L158 Benchmark]: RCFGBuilder took 349.65ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 77.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:42:25,238 INFO L158 Benchmark]: BuchiAutomizer took 1486.53ms. Allocated memory is still 111.1MB. Free memory was 77.6MB in the beginning and 87.8MB in the end (delta: -10.2MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2022-11-18 19:42:25,238 INFO L158 Benchmark]: Witness Printer took 52.70ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 85.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:42:25,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 53.8MB in the beginning and 53.7MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.74ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 88.8MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.05ms. Allocated memory is still 111.1MB. Free memory was 88.8MB in the beginning and 87.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.6MB in the end (delta: 893.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.65ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 77.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1486.53ms. Allocated memory is still 111.1MB. Free memory was 77.6MB in the beginning and 87.8MB in the end (delta: -10.2MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Witness Printer took 52.70ms. Allocated memory is still 111.1MB. Free memory was 87.8MB in the beginning and 85.8MB in the end (delta: 2.0MB). 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 1.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. 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: Lassos: inital15 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {y=-1, x=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@119e154b=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@252aebc7=0, \result=0} State at position 1 is {y=-1, x=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@119e154b=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@252aebc7=0, \result=0} For i>1, the state at position i is {y=-1 + sum_{k=0}^i 0, x=-1 + sum_{k=0}^i -1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@119e154b=0 + sum_{k=0}^i 0, a=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@252aebc7=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [9, 1, 4] Mus: [0, 1] - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 0 Loop: [L17] COND TRUE x<0 [L18] COND FALSE !(x < 0 && y>= 0) [L21] x = x-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-18 19:42:25,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd0ce74-400f-4862-9122-b0e96baf8eae/bin/uautomizer-TMbwUNV5ro/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)