./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f 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_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8 --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 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b --- 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-e04fb08 [2022-11-16 12:38:50,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:38:50,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:38:50,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:38:50,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:38:50,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:38:50,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:38:50,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:38:50,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:38:50,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:38:50,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:38:50,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:38:50,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:38:50,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:38:50,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:38:50,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:38:50,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:38:50,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:38:50,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:38:50,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:38:50,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:38:50,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:38:50,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:38:50,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:38:50,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:38:50,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:38:50,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:38:50,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:38:50,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:38:50,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:38:50,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:38:50,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:38:50,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:38:50,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:38:50,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:38:50,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:38:50,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:38:50,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:38:50,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:38:50,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:38:50,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:38:50,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 12:38:50,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:38:50,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:38:50,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:38:50,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:38:50,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:38:50,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:38:50,324 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:38:50,324 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 12:38:50,325 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 12:38:50,325 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 12:38:50,325 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 12:38:50,325 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 12:38:50,325 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 12:38:50,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:38:50,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:38:50,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:38:50,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:38:50,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 12:38:50,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 12:38:50,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 12:38:50,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:38:50,328 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 12:38:50,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:38:50,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 12:38:50,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:38:50,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:38:50,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:38:50,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:38:50,330 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 12:38:50,330 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_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b [2022-11-16 12:38:50,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:38:50,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:38:50,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:38:50,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:38:50,642 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:38:50,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2022-11-16 12:38:50,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/data/9e58b0964/465e0279067f4e23b99a473b068c92ce/FLAG8ff011309 [2022-11-16 12:38:51,272 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:38:51,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2022-11-16 12:38:51,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/data/9e58b0964/465e0279067f4e23b99a473b068c92ce/FLAG8ff011309 [2022-11-16 12:38:51,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/data/9e58b0964/465e0279067f4e23b99a473b068c92ce [2022-11-16 12:38:51,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:38:51,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:38:51,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:38:51,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:38:51,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:38:51,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36805eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51, skipping insertion in model container [2022-11-16 12:38:51,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:38:51,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:38:51,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:51,887 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:38:51,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:51,924 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:38:51,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51 WrapperNode [2022-11-16 12:38:51,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:38:51,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:51,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:38:51,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:38:51,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,961 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6 [2022-11-16 12:38:51,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:51,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:38:51,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:38:51,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:38:51,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:38:51,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:38:51,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:38:51,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:38:51,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (1/1) ... [2022-11-16 12:38:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:52,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:52,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 12:38:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2022-11-16 12:38:52,088 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2022-11-16 12:38:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2022-11-16 12:38:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2022-11-16 12:38:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:38:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:38:52,155 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:38:52,158 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:38:52,252 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:38:52,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:38:52,259 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:38:52,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:52 BoogieIcfgContainer [2022-11-16 12:38:52,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:38:52,262 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 12:38:52,263 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 12:38:52,267 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 12:38:52,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:38:52,268 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:38:51" (1/3) ... [2022-11-16 12:38:52,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25ed9d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:38:52, skipping insertion in model container [2022-11-16 12:38:52,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:38:52,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:51" (2/3) ... [2022-11-16 12:38:52,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25ed9d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:38:52, skipping insertion in model container [2022-11-16 12:38:52,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:38:52,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:52" (3/3) ... [2022-11-16 12:38:52,271 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1d.c [2022-11-16 12:38:52,327 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 12:38:52,327 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 12:38:52,327 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 12:38:52,327 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 12:38:52,327 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 12:38:52,328 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 12:38:52,328 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 12:38:52,328 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 12:38:52,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:38:52,355 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:52,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:52,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:52,362 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:38:52,362 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:52,362 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 12:38:52,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:38:52,365 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:52,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:52,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:52,366 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:38:52,366 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:52,374 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 9#L25true call main_#t~ret6#1 := rec2(main_~x~0#1);< 16#rec2ENTRYtrue [2022-11-16 12:38:52,374 INFO L750 eck$LassoCheckResult]: Loop: 16#rec2ENTRYtrue ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec1(~j);< 22#rec1ENTRYtrue ~i := #in~i; 18#L12true assume ~i <= 0;#res := 0; 14#rec1FINALtrue assume true; 15#rec1EXITtrue >#34#return; 3#L20-1true call #t~ret4 := rec2(#t~ret3 - 1);< 16#rec2ENTRYtrue [2022-11-16 12:38:52,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2022-11-16 12:38:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:52,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415421407] [2022-11-16 12:38:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:52,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:52,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1074209557, now seen corresponding path program 1 times [2022-11-16 12:38:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:52,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115980905] [2022-11-16 12:38:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:52,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:38:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:52,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115980905] [2022-11-16 12:38:52,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115980905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:52,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:52,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473450293] [2022-11-16 12:38:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:52,739 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:38:52,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:38:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:52,807 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:52,940 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-16 12:38:52,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 34 transitions. [2022-11-16 12:38:52,945 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:52,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 17 states and 23 transitions. [2022-11-16 12:38:52,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-16 12:38:52,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-16 12:38:52,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2022-11-16 12:38:52,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:52,955 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-16 12:38:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2022-11-16 12:38:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:38:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:38:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-16 12:38:52,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-16 12:38:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:52,993 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-16 12:38:52,994 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 12:38:52,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2022-11-16 12:38:53,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:53,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:53,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:53,003 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:38:53,003 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:53,004 INFO L748 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 69#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 66#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 67#rec2ENTRY [2022-11-16 12:38:53,006 INFO L750 eck$LassoCheckResult]: Loop: 67#rec2ENTRY ~j := #in~j; 79#L18 assume !(~j <= 0); 73#L20 call #t~ret3 := rec1(~j);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume !(~i <= 0); 74#L14 call #t~ret0 := rec1(~i - 2);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#28#return; 71#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#30#return; 72#L14-2 call #t~ret2 := rec1(#t~ret1);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#32#return; 70#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 75#rec1FINAL assume true; 81#rec1EXIT >#34#return; 65#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 67#rec2ENTRY [2022-11-16 12:38:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 2 times [2022-11-16 12:38:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:53,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608682067] [2022-11-16 12:38:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:53,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -204878921, now seen corresponding path program 1 times [2022-11-16 12:38:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:53,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323243429] [2022-11-16 12:38:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:53,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:53,117 INFO L85 PathProgramCache]: Analyzing trace with hash -482494696, now seen corresponding path program 1 times [2022-11-16 12:38:53,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:53,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305638537] [2022-11-16 12:38:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:53,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:53,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:53,529 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:53,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:53,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:53,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:53,531 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:38:53,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:53,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:53,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2022-11-16 12:38:53,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:53,532 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:53,550 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,570 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,574 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,578 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,633 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:53,634 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:38:53,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:53,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 12:38:53,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:53,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:53,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:53,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:53,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-16 12:38:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:53,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 12:38:53,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:53,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:53,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:53,714 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:53,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:53,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:53,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:53,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:53,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 12:38:53,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:53,760 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:53,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:53,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:53,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 12:38:53,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:53,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:53,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:53,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:53,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:38:53,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:53,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 12:38:53,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:38:53,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:53,884 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:53,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:53,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:53,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:53,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:38:53,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:53,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:53,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2022-11-16 12:38:53,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:53,885 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:53,886 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,898 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:53,973 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:53,977 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:38:53,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:53,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:53,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:54,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 12:38:54,044 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 [2022-11-16 12:38:54,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:54,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:54,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:54,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:54,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:54,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:54,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:54,083 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:54,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:54,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:54,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 12:38:54,126 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 [2022-11-16 12:38:54,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:54,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:54,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:54,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:54,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:54,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:54,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:54,146 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:54,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:54,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:54,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:54,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 12:38:54,163 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 [2022-11-16 12:38:54,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:54,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:54,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:54,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:54,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:54,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:54,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:54,199 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:54,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:54,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:54,218 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 [2022-11-16 12:38:54,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:54,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:54,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:54,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:54,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:54,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:54,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:54,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 12:38:54,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:38:54,260 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:38:54,260 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:38:54,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:54,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:54,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 12:38:54,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:38:54,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:38:54,276 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:38:54,276 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2022-11-16 12:38:54,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-16 12:38:54,286 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:38:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:54,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:38:54,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:38:54,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:38:54,650 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2022-11-16 12:38:54,652 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 8 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:54,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,153 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 8. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Result 102 states and 148 transitions. Complement of second has 42 states. [2022-11-16 12:38:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2022-11-16 12:38:55,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 3 letters. Loop has 24 letters. [2022-11-16 12:38:55,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:55,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 27 letters. Loop has 24 letters. [2022-11-16 12:38:55,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:55,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 3 letters. Loop has 48 letters. [2022-11-16 12:38:55,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:55,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 148 transitions. [2022-11-16 12:38:55,175 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:55,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 90 states and 136 transitions. [2022-11-16 12:38:55,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-16 12:38:55,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-11-16 12:38:55,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 136 transitions. [2022-11-16 12:38:55,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:55,183 INFO L218 hiAutomatonCegarLoop]: Abstraction has 90 states and 136 transitions. [2022-11-16 12:38:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 136 transitions. [2022-11-16 12:38:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2022-11-16 12:38:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (41), 18 states have call predecessors, (41), 16 states have call successors, (41) [2022-11-16 12:38:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 99 transitions. [2022-11-16 12:38:55,205 INFO L240 hiAutomatonCegarLoop]: Abstraction has 63 states and 99 transitions. [2022-11-16 12:38:55,205 INFO L428 stractBuchiCegarLoop]: Abstraction has 63 states and 99 transitions. [2022-11-16 12:38:55,205 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 12:38:55,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 99 transitions. [2022-11-16 12:38:55,206 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:55,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:55,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:55,207 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:55,207 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:38:55,208 INFO L748 eck$LassoCheckResult]: Stem: 349#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 350#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 346#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 369#rec2ENTRY ~j := #in~j; 379#L18 assume !(~j <= 0); 372#L20 call #t~ret3 := rec1(~j);< 390#rec1ENTRY ~i := #in~i; 381#L12 assume !(~i <= 0); 353#L14 call #t~ret0 := rec1(~i - 2);< 370#rec1ENTRY [2022-11-16 12:38:55,208 INFO L750 eck$LassoCheckResult]: Loop: 370#rec1ENTRY ~i := #in~i; 383#L12 assume !(~i <= 0); 352#L14 call #t~ret0 := rec1(~i - 2);< 370#rec1ENTRY [2022-11-16 12:38:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 838970620, now seen corresponding path program 1 times [2022-11-16 12:38:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:55,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480731281] [2022-11-16 12:38:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2022-11-16 12:38:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:55,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145428665] [2022-11-16 12:38:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:55,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1359045147, now seen corresponding path program 2 times [2022-11-16 12:38:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:55,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589895020] [2022-11-16 12:38:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:55,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:55,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:55,280 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:55,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:55,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:55,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:55,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:38:55,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:55,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:55,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2022-11-16 12:38:55,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:55,281 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:55,282 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,289 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,309 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:55,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:38:55,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,350 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:55,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 12:38:55,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:55,384 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:55,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:55,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 12:38:55,427 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:55,427 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:55,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:55,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 12:38:55,475 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:55,475 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:55,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,481 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:55,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 12:38:55,516 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:55,516 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:55,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:55,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 12:38:55,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,572 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:38:55,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:55,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 12:38:55,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:38:55,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,613 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:55,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:55,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:55,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:55,613 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:38:55,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:55,613 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:55,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2022-11-16 12:38:55,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:55,613 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:55,614 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,621 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,623 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,626 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,643 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:55,686 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:55,686 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:38:55,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,698 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,721 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 [2022-11-16 12:38:55,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:55,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:55,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:55,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:55,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:55,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:55,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-16 12:38:55,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:55,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,761 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,769 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 [2022-11-16 12:38:55,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:55,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:55,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:55,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:55,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:55,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:55,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:55,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:55,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 12:38:55,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,796 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,807 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 [2022-11-16 12:38:55,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:55,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:55,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 12:38:55,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:55,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:55,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:55,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:55,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:55,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:55,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,834 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-16 12:38:55,838 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 [2022-11-16 12:38:55,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:55,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:55,848 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:55,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:55,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:55,849 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:55,849 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:55,861 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:55,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:55,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,868 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 12:38:55,870 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 [2022-11-16 12:38:55,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:55,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:55,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:55,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:55,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:55,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:55,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:55,887 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:38:55,890 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:38:55,890 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:38:55,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:55,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:55,891 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:55,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 12:38:55,895 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:38:55,895 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:38:55,895 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:38:55,896 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-16 12:38:55,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-11-16 12:38:55,903 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:38:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:55,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:55,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:56,012 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 12:38:56,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 99 transitions. cyclomatic complexity: 40 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:56,068 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 99 transitions. cyclomatic complexity: 40. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 109 states and 166 transitions. Complement of second has 13 states. [2022-11-16 12:38:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-16 12:38:56,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-16 12:38:56,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 3 letters. [2022-11-16 12:38:56,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-16 12:38:56,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 166 transitions. [2022-11-16 12:38:56,074 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:56,077 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 97 states and 154 transitions. [2022-11-16 12:38:56,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-11-16 12:38:56,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2022-11-16 12:38:56,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 154 transitions. [2022-11-16 12:38:56,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:56,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 154 transitions. [2022-11-16 12:38:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 154 transitions. [2022-11-16 12:38:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-11-16 12:38:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 60 states have internal predecessors, (62), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (56), 18 states have call predecessors, (56), 22 states have call successors, (56) [2022-11-16 12:38:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 144 transitions. [2022-11-16 12:38:56,089 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 144 transitions. [2022-11-16 12:38:56,089 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 144 transitions. [2022-11-16 12:38:56,089 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 12:38:56,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 144 transitions. [2022-11-16 12:38:56,091 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:56,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:56,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:56,092 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:56,092 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:38:56,092 INFO L748 eck$LassoCheckResult]: Stem: 589#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 590#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 585#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 613#rec2ENTRY ~j := #in~j; 622#L18 assume !(~j <= 0); 625#L20 call #t~ret3 := rec1(~j);< 652#rec1ENTRY ~i := #in~i; 651#L12 assume !(~i <= 0); 595#L14 call #t~ret0 := rec1(~i - 2);< 630#rec1ENTRY ~i := #in~i; 628#L12 assume ~i <= 0;#res := 0; 616#rec1FINAL assume true; 617#rec1EXIT >#28#return; 599#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 614#rec1ENTRY [2022-11-16 12:38:56,092 INFO L750 eck$LassoCheckResult]: Loop: 614#rec1ENTRY ~i := #in~i; 650#L12 assume !(~i <= 0); 594#L14 call #t~ret0 := rec1(~i - 2);< 614#rec1ENTRY [2022-11-16 12:38:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash 372282091, now seen corresponding path program 1 times [2022-11-16 12:38:56,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473620906] [2022-11-16 12:38:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:56,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:56,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,106 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2022-11-16 12:38:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908255640] [2022-11-16 12:38:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:56,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:56,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1050214860, now seen corresponding path program 2 times [2022-11-16 12:38:56,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732582065] [2022-11-16 12:38:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:38:56,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:56,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732582065] [2022-11-16 12:38:56,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732582065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:56,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:38:56,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051457066] [2022-11-16 12:38:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:56,217 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:56,217 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:56,217 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:56,217 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:56,218 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:38:56,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:56,218 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:56,218 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2022-11-16 12:38:56,218 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:56,218 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:56,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,222 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,230 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,233 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,235 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:56,269 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:38:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,271 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:56,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:56,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 12:38:56,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:56,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:56,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,344 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:56,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:56,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 12:38:56,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,388 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:38:56,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:56,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 12:38:56,458 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:38:56,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-16 12:38:56,460 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:56,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:56,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:56,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:56,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:38:56,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:56,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:56,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2022-11-16 12:38:56,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:56,461 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:56,462 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,465 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,472 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,478 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,480 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:56,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:56,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:38:56,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,518 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,526 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 [2022-11-16 12:38:56,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:56,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:56,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:56,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:56,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:56,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:56,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:56,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 12:38:56,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:56,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,554 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,560 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 [2022-11-16 12:38:56,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:56,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:56,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:56,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:56,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:56,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:56,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:56,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-16 12:38:56,580 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:38:56,582 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:38:56,582 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:38:56,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:56,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:56,588 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:56,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 12:38:56,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:38:56,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:38:56,593 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:38:56,593 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-16 12:38:56,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:56,602 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:38:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:56,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:56,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:56,788 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:38:56,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 144 transitions. cyclomatic complexity: 57 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:56,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 144 transitions. cyclomatic complexity: 57. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 133 states and 208 transitions. Complement of second has 14 states. [2022-11-16 12:38:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-11-16 12:38:56,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 3 letters. [2022-11-16 12:38:56,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 17 letters. Loop has 3 letters. [2022-11-16 12:38:56,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 6 letters. [2022-11-16 12:38:56,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:56,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 133 states and 208 transitions. [2022-11-16 12:38:56,895 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:56,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 133 states to 121 states and 196 transitions. [2022-11-16 12:38:56,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2022-11-16 12:38:56,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2022-11-16 12:38:56,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 196 transitions. [2022-11-16 12:38:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:56,900 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 196 transitions. [2022-11-16 12:38:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 196 transitions. [2022-11-16 12:38:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2022-11-16 12:38:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 76 states have internal predecessors, (80), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (74), 22 states have call predecessors, (74), 28 states have call successors, (74) [2022-11-16 12:38:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 186 transitions. [2022-11-16 12:38:56,913 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 186 transitions. [2022-11-16 12:38:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:56,914 INFO L87 Difference]: Start difference. First operand 117 states and 186 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:56,987 INFO L93 Difference]: Finished difference Result 130 states and 196 transitions. [2022-11-16 12:38:56,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 196 transitions. [2022-11-16 12:38:56,997 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-16 12:38:57,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 128 states and 194 transitions. [2022-11-16 12:38:57,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2022-11-16 12:38:57,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-16 12:38:57,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 194 transitions. [2022-11-16 12:38:57,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:57,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 128 states and 194 transitions. [2022-11-16 12:38:57,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 194 transitions. [2022-11-16 12:38:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2022-11-16 12:38:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 66 states have internal predecessors, (68), 30 states have call successors, (30), 16 states have call predecessors, (30), 15 states have return successors, (60), 22 states have call predecessors, (60), 26 states have call successors, (60) [2022-11-16 12:38:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2022-11-16 12:38:57,029 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 158 transitions. [2022-11-16 12:38:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:57,030 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 158 transitions. [2022-11-16 12:38:57,031 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 12:38:57,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 158 transitions. [2022-11-16 12:38:57,033 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 12:38:57,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:57,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:57,036 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:57,039 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:57,039 INFO L748 eck$LassoCheckResult]: Stem: 1161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1157#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1185#rec2ENTRY ~j := #in~j; 1225#L18 assume !(~j <= 0); 1216#L20 call #t~ret3 := rec1(~j);< 1224#rec1ENTRY ~i := #in~i; 1223#L12 assume !(~i <= 0); 1169#L14 call #t~ret0 := rec1(~i - 2);< 1221#rec1ENTRY ~i := #in~i; 1219#L12 assume !(~i <= 0); 1164#L14 call #t~ret0 := rec1(~i - 2);< 1218#rec1ENTRY ~i := #in~i; 1220#L12 assume ~i <= 0;#res := 0; 1235#rec1FINAL assume true; 1198#rec1EXIT >#28#return; 1188#L14-1 [2022-11-16 12:38:57,039 INFO L750 eck$LassoCheckResult]: Loop: 1188#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1189#rec1ENTRY ~i := #in~i; 1207#L12 assume ~i <= 0;#res := 0; 1192#rec1FINAL assume true; 1194#rec1EXIT >#30#return; 1166#L14-2 call #t~ret2 := rec1(#t~ret1);< 1186#rec1ENTRY ~i := #in~i; 1231#L12 assume !(~i <= 0); 1168#L14 call #t~ret0 := rec1(~i - 2);< 1186#rec1ENTRY ~i := #in~i; 1231#L12 assume ~i <= 0;#res := 0; 1230#rec1FINAL assume true; 1229#rec1EXIT >#28#return; 1188#L14-1 [2022-11-16 12:38:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197585, now seen corresponding path program 1 times [2022-11-16 12:38:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514074094] [2022-11-16 12:38:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 949089090, now seen corresponding path program 1 times [2022-11-16 12:38:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063359789] [2022-11-16 12:38:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 12:38:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:38:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:57,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063359789] [2022-11-16 12:38:57,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063359789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:57,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536291004] [2022-11-16 12:38:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:57,143 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:57,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:38:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:57,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:57,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:57,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536291004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:57,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:38:57,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-16 12:38:57,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130950264] [2022-11-16 12:38:57,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:57,209 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:38:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:57,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:57,210 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. cyclomatic complexity: 59 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:38:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:57,263 INFO L93 Difference]: Finished difference Result 120 states and 174 transitions. [2022-11-16 12:38:57,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 174 transitions. [2022-11-16 12:38:57,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:57,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 115 states and 165 transitions. [2022-11-16 12:38:57,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-11-16 12:38:57,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2022-11-16 12:38:57,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 165 transitions. [2022-11-16 12:38:57,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:57,269 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 165 transitions. [2022-11-16 12:38:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 165 transitions. [2022-11-16 12:38:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-11-16 12:38:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 64 states have (on average 1.109375) internal successors, (71), 69 states have internal predecessors, (71), 32 states have call successors, (32), 18 states have call predecessors, (32), 16 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2022-11-16 12:38:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2022-11-16 12:38:57,279 INFO L240 hiAutomatonCegarLoop]: Abstraction has 112 states and 162 transitions. [2022-11-16 12:38:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:57,280 INFO L428 stractBuchiCegarLoop]: Abstraction has 112 states and 162 transitions. [2022-11-16 12:38:57,280 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 12:38:57,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states and 162 transitions. [2022-11-16 12:38:57,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-16 12:38:57,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:38:57,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:38:57,283 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:57,283 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:38:57,283 INFO L748 eck$LassoCheckResult]: Stem: 1445#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1446#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1441#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1462#rec2ENTRY ~j := #in~j; 1525#L18 assume !(~j <= 0); 1448#L20 call #t~ret3 := rec1(~j);< 1511#rec1ENTRY ~i := #in~i; 1509#L12 assume !(~i <= 0); 1471#L14 call #t~ret0 := rec1(~i - 2);< 1506#rec1ENTRY ~i := #in~i; 1505#L12 assume !(~i <= 0); 1469#L14 call #t~ret0 := rec1(~i - 2);< 1504#rec1ENTRY ~i := #in~i; 1507#L12 assume ~i <= 0;#res := 0; 1521#rec1FINAL assume true; 1518#rec1EXIT >#28#return; 1476#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1477#rec1ENTRY ~i := #in~i; 1492#L12 assume ~i <= 0;#res := 0; 1480#rec1FINAL assume true; 1481#rec1EXIT >#30#return; 1463#L14-2 call #t~ret2 := rec1(#t~ret1);< 1473#rec1ENTRY ~i := #in~i; 1524#L12 assume ~i <= 0;#res := 0; 1522#rec1FINAL assume true; 1484#rec1EXIT >#32#return; 1485#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1520#rec1FINAL assume true; 1517#rec1EXIT >#28#return; 1465#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1494#rec1ENTRY [2022-11-16 12:38:57,283 INFO L750 eck$LassoCheckResult]: Loop: 1494#rec1ENTRY ~i := #in~i; 1512#L12 assume !(~i <= 0); 1466#L14 call #t~ret0 := rec1(~i - 2);< 1494#rec1ENTRY [2022-11-16 12:38:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1060897207, now seen corresponding path program 1 times [2022-11-16 12:38:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477278771] [2022-11-16 12:38:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,303 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 3 times [2022-11-16 12:38:57,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908605396] [2022-11-16 12:38:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:38:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:38:57,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:38:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1475637376, now seen corresponding path program 2 times [2022-11-16 12:38:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:57,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564639462] [2022-11-16 12:38:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:38:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:38:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:38:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:38:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:38:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564639462] [2022-11-16 12:38:57,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564639462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:38:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009918230] [2022-11-16 12:38:57,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:38:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:38:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:57,499 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:38:57,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:38:57,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:38:57,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:57,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:57,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:38:57,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:38:57,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009918230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:57,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:38:57,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-16 12:38:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026364897] [2022-11-16 12:38:57,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:57,817 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:57,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:57,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:57,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:57,818 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:38:57,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:57,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:57,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:57,818 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2022-11-16 12:38:57,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:57,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:57,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,824 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,831 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,834 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,837 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:57,874 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:57,874 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:38:57,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:57,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:57,876 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:57,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:57,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:57,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-16 12:38:57,919 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:57,919 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:57,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:57,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:57,930 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:57,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:57,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:57,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-16 12:38:57,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:57,971 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:57,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:57,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:57,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:57,982 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:57,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:57,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:57,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 12:38:58,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:58,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:58,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,030 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:58,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:58,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 12:38:58,075 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:58,075 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:58,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,086 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:58,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:58,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-16 12:38:58,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:38:58,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:38:58,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-16 12:38:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,123 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-16 12:38:58,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:38:58,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:58,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-16 12:38:58,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,145 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:38:58,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:38:58,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-16 12:38:58,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:38:58,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,208 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:38:58,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:38:58,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:38:58,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:38:58,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:38:58,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:38:58,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:38:58,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2022-11-16 12:38:58,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:38:58,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:38:58,210 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,214 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,227 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,230 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:38:58,268 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:38:58,268 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:38:58,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,270 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,276 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 [2022-11-16 12:38:58,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-16 12:38:58,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,307 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:58,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,312 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,325 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 [2022-11-16 12:38:58,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-16 12:38:58,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:58,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,369 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,372 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 [2022-11-16 12:38:58,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-16 12:38:58,394 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:58,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,399 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,403 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 [2022-11-16 12:38:58,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-16 12:38:58,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:58,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-11-16 12:38:58,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,422 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-16 12:38:58,425 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 [2022-11-16 12:38:58,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,438 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:38:58,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,445 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,456 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 [2022-11-16 12:38:58,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-16 12:38:58,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:38:58,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:38:58,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:38:58,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:38:58,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:38:58,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:38:58,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:38:58,499 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:38:58,501 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:38:58,502 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:38:58,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:38:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:58,505 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,507 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:38:58,507 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:38:58,507 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:38:58,507 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-16 12:38:58,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-16 12:38:58,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,514 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:38:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:38:58,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:58,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:58,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:58,929 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:38:58,929 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:58,995 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 129 states and 180 transitions. Complement of second has 7 states. [2022-11-16 12:38:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-16 12:38:58,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:38:58,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:58,999 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:38:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:59,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:38:59,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:59,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:59,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:59,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:59,425 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:38:59,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:59,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 129 states and 180 transitions. Complement of second has 7 states. [2022-11-16 12:38:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-16 12:38:59,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:38:59,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:59,495 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:38:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:38:59,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:59,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:38:59,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:59,845 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:38:59,845 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:59,951 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 157 states and 219 transitions. Complement of second has 13 states. [2022-11-16 12:38:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:38:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:38:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2022-11-16 12:38:59,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:38:59,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:59,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2022-11-16 12:38:59,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:59,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 6 letters. [2022-11-16 12:38:59,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:38:59,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 219 transitions. [2022-11-16 12:38:59,961 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-11-16 12:38:59,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 139 states and 201 transitions. [2022-11-16 12:38:59,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2022-11-16 12:38:59,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2022-11-16 12:38:59,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 201 transitions. [2022-11-16 12:38:59,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:38:59,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 139 states and 201 transitions. [2022-11-16 12:38:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 201 transitions. [2022-11-16 12:38:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2022-11-16 12:38:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 75 states have internal predecessors, (79), 32 states have call successors, (32), 20 states have call predecessors, (32), 18 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2022-11-16 12:38:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 170 transitions. [2022-11-16 12:39:00,001 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 170 transitions. [2022-11-16 12:39:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:39:00,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:00,003 INFO L87 Difference]: Start difference. First operand 120 states and 170 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:00,087 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2022-11-16 12:39:00,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 116 transitions. [2022-11-16 12:39:00,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 12:39:00,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 63 states and 75 transitions. [2022-11-16 12:39:00,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-16 12:39:00,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-16 12:39:00,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2022-11-16 12:39:00,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:39:00,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-16 12:39:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2022-11-16 12:39:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2022-11-16 12:39:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 14 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-16 12:39:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-11-16 12:39:00,103 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-16 12:39:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:39:00,105 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-16 12:39:00,105 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 12:39:00,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 65 transitions. [2022-11-16 12:39:00,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 12:39:00,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:39:00,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:39:00,108 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:00,108 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:39:00,108 INFO L748 eck$LassoCheckResult]: Stem: 2781#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2782#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2779#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 2789#rec2ENTRY ~j := #in~j; 2800#L18 assume !(~j <= 0); 2794#L20 call #t~ret3 := rec1(~j);< 2809#rec1ENTRY ~i := #in~i; 2820#L12 assume !(~i <= 0); 2787#L14 call #t~ret0 := rec1(~i - 2);< 2822#rec1ENTRY ~i := #in~i; 2823#L12 assume ~i <= 0;#res := 0; 2821#rec1FINAL assume true; 2799#rec1EXIT >#28#return; 2792#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 2795#rec1ENTRY ~i := #in~i; 2806#L12 assume ~i <= 0;#res := 0; 2796#rec1FINAL assume true; 2798#rec1EXIT >#30#return; 2814#L14-2 call #t~ret2 := rec1(#t~ret1);< 2791#rec1ENTRY ~i := #in~i; 2816#L12 assume ~i <= 0;#res := 0; 2815#rec1FINAL assume true; 2813#rec1EXIT >#32#return; 2812#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 2811#rec1FINAL assume true; 2810#rec1EXIT >#34#return; 2778#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 2780#rec2ENTRY ~j := #in~j; 2802#L18 assume !(~j <= 0); 2803#L20 call #t~ret3 := rec1(~j);< 2807#rec1ENTRY [2022-11-16 12:39:00,109 INFO L750 eck$LassoCheckResult]: Loop: 2807#rec1ENTRY ~i := #in~i; 2804#L12 assume !(~i <= 0); 2805#L14 call #t~ret0 := rec1(~i - 2);< 2807#rec1ENTRY [2022-11-16 12:39:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1256061253, now seen corresponding path program 2 times [2022-11-16 12:39:00,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:00,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297970308] [2022-11-16 12:39:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:00,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-16 12:39:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:39:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:39:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:39:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297970308] [2022-11-16 12:39:00,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297970308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743272371] [2022-11-16 12:39:00,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:00,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,307 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-16 12:39:00,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:39:00,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:00,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:39:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:39:00,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:39:00,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743272371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:00,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:00,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-16 12:39:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577513713] [2022-11-16 12:39:00,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:00,501 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:39:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 4 times [2022-11-16 12:39:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:00,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409482920] [2022-11-16 12:39:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:00,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:39:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:39:00,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:39:00,536 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:39:00,536 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:39:00,536 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:39:00,536 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:39:00,536 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:39:00,536 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,537 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:39:00,537 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:39:00,537 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2022-11-16 12:39:00,537 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:39:00,537 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:39:00,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,546 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,549 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,551 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,554 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,582 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:39:00,582 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:39:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,583 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:39:00,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:39:00,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-16 12:39:00,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:39:00,613 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:39:00,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:00,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,617 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:39:00,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:39:00,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-16 12:39:00,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:00,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,648 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:39:00,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:39:00,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-16 12:39:00,685 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:39:00,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:00,689 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:39:00,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:39:00,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:39:00,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:39:00,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:39:00,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:39:00,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:39:00,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2022-11-16 12:39:00,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:39:00,690 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:39:00,690 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,699 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,701 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,703 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,707 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 12:39:00,733 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:39:00,733 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:39:00,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,735 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,741 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 [2022-11-16 12:39:00,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-16 12:39:00,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:39:00,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:39:00,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:39:00,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:39:00,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:39:00,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:39:00,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:39:00,764 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:39:00,766 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:39:00,766 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:39:00,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:39:00,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:00,774 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:39:00,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:39:00,779 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:39:00,779 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:39:00,780 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-16 12:39:00,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-16 12:39:00,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:00,784 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:39:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:00,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:01,136 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:39:01,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 64 states and 76 transitions. Complement of second has 13 states. [2022-11-16 12:39:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:39:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2022-11-16 12:39:01,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:39:01,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:39:01,214 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:39:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:01,536 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:39:01,536 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 64 states and 76 transitions. Complement of second has 13 states. [2022-11-16 12:39:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:39:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2022-11-16 12:39:01,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:39:01,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:39:01,605 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:39:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:01,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:39:01,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:01,900 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 12:39:01,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,988 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 78 states and 90 transitions. Complement of second has 13 states. [2022-11-16 12:39:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 12:39:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:39:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2022-11-16 12:39:01,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-16 12:39:01,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:39:01,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2022-11-16 12:39:01,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:39:01,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 6 letters. [2022-11-16 12:39:01,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:39:01,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 90 transitions. [2022-11-16 12:39:01,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:39:01,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 0 states and 0 transitions. [2022-11-16 12:39:01,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:39:01,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:39:01,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:39:01,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:01,997 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:39:01,997 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:39:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:39:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:01,998 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:01,999 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-16 12:39:01,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-16 12:39:01,999 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:39:01,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:39:01,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:39:01,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:39:02,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:39:02,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:02,000 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:39:02,000 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:39:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:39:02,001 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:39:02,001 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-16 12:39:02,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:39:02,001 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:39:02,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 12:39:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:39:02 BoogieIcfgContainer [2022-11-16 12:39:02,013 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 12:39:02,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:39:02,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:39:02,014 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:39:02,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:52" (3/4) ... [2022-11-16 12:39:02,018 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:39:02,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:39:02,020 INFO L158 Benchmark]: Toolchain (without parser) took 10362.13ms. Allocated memory was 111.1MB in the beginning and 178.3MB in the end (delta: 67.1MB). Free memory was 78.5MB in the beginning and 73.8MB in the end (delta: 4.7MB). Peak memory consumption was 70.3MB. Max. memory is 16.1GB. [2022-11-16 12:39:02,020 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:02,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.91ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 87.5MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:39:02,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:02,023 INFO L158 Benchmark]: Boogie Preprocessor took 20.32ms. Allocated memory is still 111.1MB. Free memory was 86.2MB in the beginning and 85.5MB in the end (delta: 621.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:39:02,024 INFO L158 Benchmark]: RCFGBuilder took 277.84ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 76.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:39:02,025 INFO L158 Benchmark]: BuchiAutomizer took 9750.52ms. Allocated memory was 111.1MB in the beginning and 178.3MB in the end (delta: 67.1MB). Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. [2022-11-16 12:39:02,025 INFO L158 Benchmark]: Witness Printer took 5.02ms. Allocated memory is still 178.3MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:39:02,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.91ms. Allocated memory is still 111.1MB. Free memory was 78.2MB in the beginning and 87.5MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.32ms. Allocated memory is still 111.1MB. Free memory was 86.2MB in the beginning and 85.5MB in the end (delta: 621.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.84ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 76.7MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9750.52ms. Allocated memory was 111.1MB in the beginning and 178.3MB in the end (delta: 67.1MB). Free memory was 76.2MB in the beginning and 74.8MB in the end (delta: 1.4MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. * Witness Printer took 5.02ms. Allocated memory is still 178.3MB. Free memory was 74.8MB in the beginning and 73.8MB in the end (delta: 1.0MB). 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 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 10 locations. One deterministic module has affine ranking function \old(i) and consists of 4 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.6s and 8 iterations. TraceHistogramMax:5. Analysis of lassos took 4.9s. Construction of modules took 0.4s. Büchi inclusion checks took 4.0s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 89 StatesRemovedByMinimization, 7 NontrivialMinimizations. 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 22/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 221 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 504 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 199 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp100 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 105ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-16 12:39:02,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:02,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:02,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:02,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ada10d0-8a6d-4861-b32c-9d150f1c0894/bin/uautomizer-tPACEb0tL8/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 Result: TRUE