./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ --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 32bit --witnessprinter.graph.data.programhash b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f --- 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-dbf71c6-m [2022-10-17 10:57:17,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:17,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:17,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:17,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:17,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:17,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:17,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:17,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:17,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:17,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:17,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:17,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:17,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:17,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:17,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:17,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:17,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:17,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:17,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:17,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:17,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:17,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:17,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:17,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:17,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:17,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:17,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:17,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:17,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:17,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:17,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:17,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:17,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:17,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:17,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:17,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:17,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:17,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:17,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:17,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:17,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-10-17 10:57:17,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:17,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:17,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:17,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:17,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:17,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:17,624 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:17,624 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:57:17,624 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:57:17,625 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:57:17,626 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:57:17,626 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:57:17,626 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:57:17,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:17,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:17,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:57:17,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:17,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:17,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:17,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:57:17,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:57:17,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:57:17,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:17,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:17,631 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:57:17,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:17,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:57:17,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:17,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:17,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:17,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:17,633 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:57:17,634 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_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f [2022-10-17 10:57:17,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:18,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:18,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:18,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:18,028 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:18,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2022-10-17 10:57:18,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/data/d5b51ccea/5568ee5abf3545cbb2549bcba378e413/FLAG06a6cdf09 [2022-10-17 10:57:18,661 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:18,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2022-10-17 10:57:18,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/data/d5b51ccea/5568ee5abf3545cbb2549bcba378e413/FLAG06a6cdf09 [2022-10-17 10:57:19,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/data/d5b51ccea/5568ee5abf3545cbb2549bcba378e413 [2022-10-17 10:57:19,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:19,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:19,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:19,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:19,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:19,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e192414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19, skipping insertion in model container [2022-10-17 10:57:19,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:19,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:19,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[354,367] [2022-10-17 10:57:19,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[442,455] [2022-10-17 10:57:19,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:19,322 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:19,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[354,367] [2022-10-17 10:57:19,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c[442,455] [2022-10-17 10:57:19,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:19,351 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:19,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19 WrapperNode [2022-10-17 10:57:19,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:19,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:19,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:19,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:19,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,382 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-10-17 10:57:19,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:19,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:19,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:19,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:19,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:19,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:19,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:19,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:19,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (1/1) ... [2022-10-17 10:57:19,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:19,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:57:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-10-17 10:57:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-10-17 10:57:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:57:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-10-17 10:57:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-10-17 10:57:19,556 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:19,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:57:19,715 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:57:19,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:57:19,722 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:57:19,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:19 BoogieIcfgContainer [2022-10-17 10:57:19,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:57:19,742 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:57:19,742 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:57:19,747 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:57:19,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:19,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:57:19" (1/3) ... [2022-10-17 10:57:19,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d64e039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:57:19, skipping insertion in model container [2022-10-17 10:57:19,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:19,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:19" (2/3) ... [2022-10-17 10:57:19,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d64e039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:57:19, skipping insertion in model container [2022-10-17 10:57:19,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:57:19,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:19" (3/3) ... [2022-10-17 10:57:19,751 INFO L332 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-2.c [2022-10-17 10:57:19,852 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:57:19,852 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:57:19,853 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:57:19,853 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:57:19,853 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:57:19,853 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:57:19,853 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:57:19,854 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:57:19,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:57:19,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-10-17 10:57:19,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:19,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:19,908 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:57:19,908 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-10-17 10:57:19,909 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:57:19,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:57:19,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-10-17 10:57:19,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:57:19,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:57:19,914 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 10:57:19,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-10-17 10:57:19,939 INFO L748 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 15#L23true call f(2);< 12#fENTRYtrue [2022-10-17 10:57:19,939 INFO L750 eck$LassoCheckResult]: Loop: 12#fENTRYtrue ~n := #in~n; 5#L9true assume !(~n < 3);#t~post6 := ~n;~n := #t~post6 - 1;havoc #t~post6; 8#L11true call f2(~n);< 6#f2ENTRYtrue ~n := #in~n; 14#L16true assume !(~n < 3);#t~post7 := ~n;~n := #t~post7 - 1;havoc #t~post7; 16#L18true call f(~n);< 12#fENTRYtrue [2022-10-17 10:57:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash 38808, now seen corresponding path program 1 times [2022-10-17 10:57:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:19,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517415307] [2022-10-17 10:57:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:20,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:20,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 891958565, now seen corresponding path program 1 times [2022-10-17 10:57:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478834806] [2022-10-17 10:57:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:20,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:20,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash 904560508, now seen corresponding path program 1 times [2022-10-17 10:57:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428991344] [2022-10-17 10:57:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428991344] [2022-10-17 10:57:20,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428991344] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:20,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:57:20,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:57:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423938912] [2022-10-17 10:57:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:20,656 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:20,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:20,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:20,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:20,657 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:57:20,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:20,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:20,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:20,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2022-10-17 10:57:20,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:20,660 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:20,678 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:20,711 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:20,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:20,723 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:20,792 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:20,792 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:57:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:20,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:20,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:57:20,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:20,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:57:20,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:20,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:20,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:20,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:57:20,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:57:20,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:57:20,977 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:57:20,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:20,986 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:57:20,986 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:57:20,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:57:20,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:57:20,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:57:20,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:20,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:57:20,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:57:20,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2022-10-17 10:57:20,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:57:20,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:57:20,989 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:20,999 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:21,003 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:21,006 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:57:21,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:57:21,044 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:57:21,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:21,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:21,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:21,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:57:21,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:57:21,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:57:21,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:57:21,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:57:21,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:57:21,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:57:21,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:57:21,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:57:21,085 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:57:21,092 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 10:57:21,092 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:57:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:57:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:21,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:21,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:57:21,102 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:57:21,102 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:57:21,103 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2022-10-17 10:57:21,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:57:21,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:21,139 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:57:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:57:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:21,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:57:21,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:57:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:21,399 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2022-10-17 10:57:21,401 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:21,582 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 62 transitions. Complement of second has 26 states. [2022-10-17 10:57:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-10-17 10:57:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 24 transitions. [2022-10-17 10:57:21,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 6 letters. [2022-10-17 10:57:21,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:21,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 9 letters. Loop has 6 letters. [2022-10-17 10:57:21,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:21,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 12 letters. [2022-10-17 10:57:21,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:57:21,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 62 transitions. [2022-10-17 10:57:21,601 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:57:21,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 0 states and 0 transitions. [2022-10-17 10:57:21,605 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 10:57:21,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 10:57:21,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 10:57:21,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:57:21,606 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:57:21,606 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:57:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:57:21,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:57:21,610 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:21,613 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-10-17 10:57:21,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-10-17 10:57:21,613 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:57:21,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 10:57:21,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 10:57:21,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 10:57:21,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 10:57:21,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:57:21,614 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:57:21,614 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:57:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:57:21,615 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:57:21,616 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:57:21,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:57:21,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:57:21,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-10-17 10:57:21,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:57:21 BoogieIcfgContainer [2022-10-17 10:57:21,624 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:57:21,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:57:21,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:57:21,625 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:57:21,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:19" (3/4) ... [2022-10-17 10:57:21,628 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:57:21,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:57:21,630 INFO L158 Benchmark]: Toolchain (without parser) took 2557.66ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 57.1MB in the beginning and 67.2MB in the end (delta: -10.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 10:57:21,630 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:21,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.36ms. Allocated memory is still 96.5MB. Free memory was 57.0MB in the beginning and 71.3MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:57:21,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.16ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 69.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:21,632 INFO L158 Benchmark]: Boogie Preprocessor took 18.22ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.8MB in the end (delta: 969.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:57:21,633 INFO L158 Benchmark]: RCFGBuilder took 338.80ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 60.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:57:21,633 INFO L158 Benchmark]: BuchiAutomizer took 1881.85ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 59.7MB in the beginning and 67.2MB in the end (delta: -7.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-10-17 10:57:21,634 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 125.8MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:21,637 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 96.5MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.36ms. Allocated memory is still 96.5MB. Free memory was 57.0MB in the beginning and 71.3MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.16ms. Allocated memory is still 96.5MB. Free memory was 70.9MB in the beginning and 69.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.22ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.8MB in the end (delta: 969.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.80ms. Allocated memory is still 96.5MB. Free memory was 68.8MB in the beginning and 60.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1881.85ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 59.7MB in the beginning and 67.2MB in the end (delta: -7.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 125.8MB. Free memory is still 67.2MB. 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 Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 9 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 7 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 56ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-10-17 10:57:21,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:57:21,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de51e737-7d70-4c2f-8085-3a6ba43af07e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE