./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8 --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 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- 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-2329fc7 [2022-12-13 18:32:30,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:32:30,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:32:31,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:32:31,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:32:31,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:32:31,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:32:31,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:32:31,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:32:31,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:32:31,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:32:31,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:32:31,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:32:31,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:32:31,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:32:31,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:32:31,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:32:31,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:32:31,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:32:31,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:32:31,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:32:31,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:32:31,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:32:31,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:32:31,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:32:31,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:32:31,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:32:31,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:32:31,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:32:31,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:32:31,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:32:31,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:32:31,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:32:31,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:32:31,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:32:31,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:32:31,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:32:31,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:32:31,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:32:31,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:32:31,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:32:31,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 18:32:31,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:32:31,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:32:31,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:32:31,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:32:31,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:32:31,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:32:31,076 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:32:31,076 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 18:32:31,076 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 18:32:31,077 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 18:32:31,077 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 18:32:31,077 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 18:32:31,077 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 18:32:31,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:32:31,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:32:31,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:32:31,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:32:31,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 18:32:31,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 18:32:31,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 18:32:31,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:32:31,079 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 18:32:31,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:32:31,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 18:32:31,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:32:31,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:32:31,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:32:31,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:32:31,081 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 18:32:31,081 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_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2022-12-13 18:32:31,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:32:31,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:32:31,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:32:31,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:32:31,288 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:32:31,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2022-12-13 18:32:33,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:32:34,066 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:32:34,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2022-12-13 18:32:34,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/data/27ef0ecb9/634fc14eae0741af9beee05b2cccae1b/FLAGc2b4e710b [2022-12-13 18:32:34,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/data/27ef0ecb9/634fc14eae0741af9beee05b2cccae1b [2022-12-13 18:32:34,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:32:34,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:32:34,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:32:34,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:32:34,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:32:34,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e57f045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34, skipping insertion in model container [2022-12-13 18:32:34,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:32:34,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:32:34,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:34,206 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:32:34,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:34,225 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:32:34,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34 WrapperNode [2022-12-13 18:32:34,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:32:34,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:34,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:32:34,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:32:34,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,248 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2022-12-13 18:32:34,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:34,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:32:34,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:32:34,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:32:34,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:32:34,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:32:34,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:32:34,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:32:34,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (1/1) ... [2022-12-13 18:32:34,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 18:32:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-12-13 18:32:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-12-13 18:32:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:32:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:32:34,382 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:32:34,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:32:34,440 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:32:34,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:32:34,445 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:32:34,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:34 BoogieIcfgContainer [2022-12-13 18:32:34,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:32:34,447 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 18:32:34,447 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 18:32:34,450 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 18:32:34,450 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:32:34,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 06:32:34" (1/3) ... [2022-12-13 18:32:34,451 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 06:32:34, skipping insertion in model container [2022-12-13 18:32:34,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:32:34,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:34" (2/3) ... [2022-12-13 18:32:34,452 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54ecb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 06:32:34, skipping insertion in model container [2022-12-13 18:32:34,452 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:32:34,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:34" (3/3) ... [2022-12-13 18:32:34,453 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2022-12-13 18:32:34,497 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 18:32:34,497 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 18:32:34,497 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 18:32:34,497 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 18:32:34,497 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 18:32:34,498 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 18:32:34,498 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 18:32:34,498 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 18:32:34,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:32:34,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 18:32:34,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:32:34,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:32:34,521 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 18:32:34,522 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 18:32:34,522 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 18:32:34,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:32:34,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 18:32:34,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:32:34,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:32:34,524 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-12-13 18:32:34,524 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 18:32:34,530 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L20true assume !(main_~x~0#1 < 0); 9#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 12#$Ultimate##0true [2022-12-13 18:32:34,530 INFO L750 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 6#L12true assume !(0 == ~x); 4#L15true call #t~ret0 := g(~x - 1);< 12#$Ultimate##0true [2022-12-13 18:32:34,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2022-12-13 18:32:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:34,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842638957] [2022-12-13 18:32:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:34,622 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2022-12-13 18:32:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:34,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437642272] [2022-12-13 18:32:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2022-12-13 18:32:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540482682] [2022-12-13 18:32:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:34,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:34,724 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:34,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:34,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:34,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:34,725 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:32:34,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:34,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:34,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2022-12-13 18:32:34,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:34,726 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:34,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:34,746 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:34,749 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:34,751 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:34,754 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:34,818 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:34,819 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:32:34,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 18:32:34,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:34,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:34,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:34,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 18:32:34,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:34,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,864 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:34,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:34,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:34,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 18:32:34,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:34,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:34,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:34,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 18:32:34,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,888 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 18:32:34,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:34,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:34,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:34,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 18:32:34,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 18:32:34,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:34,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 18:32:34,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:34,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:34,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 18:32:34,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:32:34,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:34,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:34,977 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-1} Honda state: {g_#in~x=-1} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [7, 9, 1] Nus: [1, 0] [2022-12-13 18:32:34,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:34,999 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:34,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:34,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:34,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:34,999 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:32:34,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:34,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:34,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:35,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2022-12-13 18:32:35,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:35,000 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:35,001 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,003 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,005 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,008 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,010 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,012 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,015 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,022 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:35,069 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:32:35,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 18:32:35,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,085 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 18:32:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 18:32:35,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,103 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 18:32:35,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 18:32:35,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,122 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 18:32:35,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 18:32:35,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 18:32:35,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,163 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 18:32:35,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:35,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:35,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,181 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 18:32:35,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:35,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 18:32:35,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,199 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 18:32:35,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:32:35,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:35,228 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:32:35,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 18:32:35,231 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:35,231 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:35,231 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:35,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:35,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:32:35,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,232 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:35,232 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:35,232 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2022-12-13 18:32:35,232 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:35,232 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:35,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,236 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,238 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,239 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,242 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,244 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,245 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,251 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:35,291 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:35,295 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:32:35,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,298 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 18:32:35,300 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 [2022-12-13 18:32:35,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,316 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 18:32:35,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,320 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 18:32:35,323 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 [2022-12-13 18:32:35,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,333 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,339 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 18:32:35,341 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 [2022-12-13 18:32:35,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-12-13 18:32:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 18:32:35,360 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 [2022-12-13 18:32:35,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,373 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 18:32:35,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,376 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 18:32:35,378 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 [2022-12-13 18:32:35,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 18:32:35,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,395 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 18:32:35,397 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 [2022-12-13 18:32:35,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,413 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 18:32:35,416 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 [2022-12-13 18:32:35,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:35,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:35,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:35,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:35,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:35,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 18:32:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,432 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 18:32:35,434 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 [2022-12-13 18:32:35,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:35,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:35,445 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-12-13 18:32:35,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:35,455 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-12-13 18:32:35,455 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-12-13 18:32:35,473 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:32:35,497 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2022-12-13 18:32:35,497 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2022-12-13 18:32:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:35,540 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:35,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 18:32:35,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:32:35,556 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2022-12-13 18:32:35,556 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:32:35,557 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2022-12-13 18:32:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:35,565 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2022-12-13 18:32:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:35,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:32:35,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:35,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:32:35,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:35,697 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 [2022-12-13 18:32:35,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:32:35,799 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). 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), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 43 transitions. Complement of second has 13 states. [2022-12-13 18:32:35,801 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 [2022-12-13 18:32:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. 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), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:32:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-12-13 18:32:35,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-12-13 18:32:35,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:35,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-12-13 18:32:35,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:35,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-12-13 18:32:35,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:35,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2022-12-13 18:32:35,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 18:32:35,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2022-12-13 18:32:35,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-12-13 18:32:35,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-12-13 18:32:35,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2022-12-13 18:32:35,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:32:35,819 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 18:32:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2022-12-13 18:32:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-13 18:32:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 18:32:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-13 18:32:35,842 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 18:32:35,842 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 18:32:35,842 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 18:32:35,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2022-12-13 18:32:35,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 18:32:35,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:32:35,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:32:35,843 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:35,844 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:35,844 INFO L748 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 129#L20 assume !(main_~x~0#1 < 0); 125#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 126#$Ultimate##0 ~x := #in~x; 130#L12 assume !(0 == ~x); 119#L15 call #t~ret0 := g(~x - 1);< 124#$Ultimate##0 ~x := #in~x; 131#L12 assume 0 == ~x;#res := 1; 118#gFINAL assume true; 120#gEXIT >#23#return; 122#L15-1 [2022-12-13 18:32:35,844 INFO L750 eck$LassoCheckResult]: Loop: 122#L15-1 call #t~ret1 := g(1 + #t~ret0);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume !(0 == ~x); 121#L15 call #t~ret0 := g(~x - 1);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume 0 == ~x;#res := 1; 133#gFINAL assume true; 135#gEXIT >#23#return; 122#L15-1 [2022-12-13 18:32:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2022-12-13 18:32:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:35,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764623470] [2022-12-13 18:32:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:35,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:35,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2022-12-13 18:32:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:35,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549574655] [2022-12-13 18:32:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:35,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:35,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:35,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:35,868 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2022-12-13 18:32:35,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:35,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830027197] [2022-12-13 18:32:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:32:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:32:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:35,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 18:32:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:32:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:36,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830027197] [2022-12-13 18:32:36,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830027197] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:36,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706482238] [2022-12-13 18:32:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:36,027 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:36,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 18:32:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:36,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:32:36,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:32:36,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:32:36,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706482238] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:36,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:36,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-12-13 18:32:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816277188] [2022-12-13 18:32:36,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:36,265 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:36,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:36,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:36,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:36,266 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:32:36,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:36,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:36,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:36,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2022-12-13 18:32:36,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:36,266 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:36,267 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:36,269 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:36,276 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:36,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:36,301 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:32:36,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:36,303 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 18:32:36,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:36,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:36,318 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:36,318 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:36,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 18:32:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:36,322 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:36,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 18:32:36,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:36,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:36,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 18:32:36,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:36,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:36,343 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:36,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 18:32:36,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:32:36,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:37,498 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:32:37,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 18:32:37,502 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:37,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:37,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:37,502 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:37,502 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:32:37,502 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:37,502 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:37,502 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:37,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2022-12-13 18:32:37,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:37,502 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:37,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:37,505 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:37,506 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:37,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:37,531 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:32:37,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:37,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:37,532 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:37,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 18:32:37,534 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 [2022-12-13 18:32:37,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:37,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:37,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:37,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:37,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:37,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:37,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:37,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:37,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-12-13 18:32:37,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:37,551 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:37,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 18:32:37,553 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 [2022-12-13 18:32:37,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:37,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:37,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:37,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:37,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:37,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:37,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:37,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:32:37,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-12-13 18:32:37,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:37,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:37,568 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:37,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 18:32:37,570 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 [2022-12-13 18:32:37,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:32:37,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:32:37,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:32:37,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:32:37,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:32:37,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:32:37,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:32:37,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:32:37,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 18:32:37,589 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 18:32:37,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:37,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:37,590 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:37,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 18:32:37,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:32:37,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 18:32:37,592 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:32:37,592 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2022-12-13 18:32:37,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 18:32:37,596 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 18:32:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:37,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:32:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:37,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 18:32:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:37,753 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-12-13 18:32:37,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:32:37,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 83 states and 121 transitions. Complement of second has 31 states. [2022-12-13 18:32:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 18:32:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:32:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2022-12-13 18:32:37,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2022-12-13 18:32:37,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:37,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2022-12-13 18:32:37,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:37,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2022-12-13 18:32:37,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:32:37,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2022-12-13 18:32:37,934 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-12-13 18:32:37,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2022-12-13 18:32:37,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2022-12-13 18:32:37,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-12-13 18:32:37,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2022-12-13 18:32:37,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:32:37,937 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-12-13 18:32:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2022-12-13 18:32:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-12-13 18:32:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2022-12-13 18:32:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2022-12-13 18:32:37,942 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2022-12-13 18:32:37,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:32:37,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:32:37,945 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:32:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:38,014 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-12-13 18:32:38,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2022-12-13 18:32:38,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 18:32:38,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2022-12-13 18:32:38,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2022-12-13 18:32:38,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-12-13 18:32:38,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2022-12-13 18:32:38,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:32:38,017 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-13 18:32:38,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2022-12-13 18:32:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-12-13 18:32:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:32:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-13 18:32:38,020 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-13 18:32:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:32:38,021 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-13 18:32:38,021 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 18:32:38,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2022-12-13 18:32:38,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 18:32:38,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:32:38,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:32:38,022 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:38,022 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 18:32:38,022 INFO L748 eck$LassoCheckResult]: Stem: 578#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 579#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 580#L20 assume !(main_~x~0#1 < 0); 572#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 577#$Ultimate##0 ~x := #in~x; 583#L12 assume !(0 == ~x); 566#L15 call #t~ret0 := g(~x - 1);< 571#$Ultimate##0 ~x := #in~x; 584#L12 assume 0 == ~x;#res := 1; 565#gFINAL assume true; 567#gEXIT >#23#return; 569#L15-1 call #t~ret1 := g(1 + #t~ret0);< 581#$Ultimate##0 ~x := #in~x; 582#L12 assume !(0 == ~x); 568#L15 call #t~ret0 := g(~x - 1);< 570#$Ultimate##0 ~x := #in~x; 585#L12 assume !(0 == ~x); 574#L15 [2022-12-13 18:32:38,022 INFO L750 eck$LassoCheckResult]: Loop: 574#L15 call #t~ret0 := g(~x - 1);< 588#$Ultimate##0 ~x := #in~x; 586#L12 assume !(0 == ~x); 574#L15 [2022-12-13 18:32:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2022-12-13 18:32:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858622898] [2022-12-13 18:32:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2022-12-13 18:32:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234494420] [2022-12-13 18:32:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2022-12-13 18:32:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964073204] [2022-12-13 18:32:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-12-13 18:32:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:32:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:32:38,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964073204] [2022-12-13 18:32:38,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964073204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353080570] [2022-12-13 18:32:38,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:32:38,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,181 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 18:32:38,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 18:32:38,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:32:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 18:32:38,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:32:38,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:32:38,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353080570] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:38,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:38,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-12-13 18:32:38,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227855365] [2022-12-13 18:32:38,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:38,335 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:32:38,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:32:38,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:32:38,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:32:38,335 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:32:38,335 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,335 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:32:38,335 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:32:38,335 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2022-12-13 18:32:38,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:32:38,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:32:38,336 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:38,338 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:38,339 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:38,344 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:32:38,373 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:32:38,373 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:32:38,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,374 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 18:32:38,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:38,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:38,389 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:38,389 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:38,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 18:32:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,393 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 18:32:38,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:38,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:38,406 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:38,406 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:38,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-12-13 18:32:38,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,410 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 18:32:38,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:38,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:38,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-12-13 18:32:38,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,436 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 18:32:38,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:32:38,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:38,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:38,615 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-6, g_~x=-2} Honda state: {g_#in~x=-6, g_~x=-2} Generalized eigenvectors: [{g_#in~x=3, g_~x=-1}, {g_#in~x=-4, g_~x=0}, {g_#in~x=4, g_~x=0}] Lambdas: [1, 1, 0] Nus: [1, 1] [2022-12-13 18:32:38,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 18:32:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:32:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:38,619 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:38,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 18:32:38,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:32:38,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:32:38,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:32:38,632 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:32:38,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-12-13 18:32:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:32:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:32:38,635 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:32:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:38,737 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-12-13 18:32:38,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2022-12-13 18:32:38,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 18:32:38,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2022-12-13 18:32:38,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-12-13 18:32:38,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-12-13 18:32:38,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2022-12-13 18:32:38,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:32:38,739 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-12-13 18:32:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2022-12-13 18:32:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-12-13 18:32:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:32:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-12-13 18:32:38,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-12-13 18:32:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:32:38,742 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-12-13 18:32:38,742 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 18:32:38,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2022-12-13 18:32:38,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 18:32:38,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:32:38,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:32:38,743 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:38,743 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:32:38,743 INFO L748 eck$LassoCheckResult]: Stem: 775#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 776#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 777#L20 assume !(main_~x~0#1 < 0); 771#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 774#$Ultimate##0 ~x := #in~x; 779#L12 assume !(0 == ~x); 770#L15 call #t~ret0 := g(~x - 1);< 772#$Ultimate##0 ~x := #in~x; 780#L12 assume 0 == ~x;#res := 1; 784#gFINAL assume true; 773#gEXIT >#23#return; 768#L15-1 [2022-12-13 18:32:38,743 INFO L750 eck$LassoCheckResult]: Loop: 768#L15-1 call #t~ret1 := g(1 + #t~ret0);< 782#$Ultimate##0 ~x := #in~x; 781#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 769#$Ultimate##0 ~x := #in~x; 778#L12 assume !(0 == ~x); 765#L15 call #t~ret0 := g(~x - 1);< 783#$Ultimate##0 ~x := #in~x; 785#L12 assume 0 == ~x;#res := 1; 764#gFINAL assume true; 766#gEXIT >#23#return; 768#L15-1 [2022-12-13 18:32:38,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2022-12-13 18:32:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059527272] [2022-12-13 18:32:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:38,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2022-12-13 18:32:38,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828016250] [2022-12-13 18:32:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2022-12-13 18:32:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230722991] [2022-12-13 18:32:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:32:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:32:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:32:38,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 06:32:38 BoogieIcfgContainer [2022-12-13 18:32:38,963 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 18:32:38,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:32:38,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:32:38,964 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:32:38,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:34" (3/4) ... [2022-12-13 18:32:38,966 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 18:32:38,986 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:32:38,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:32:38,987 INFO L158 Benchmark]: Toolchain (without parser) took 4901.17ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 102.1MB in the beginning and 68.5MB in the end (delta: 33.6MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,987 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:32:38,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 139.03ms. Allocated memory is still 132.1MB. Free memory was 102.1MB in the beginning and 93.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.05ms. Allocated memory is still 132.1MB. Free memory was 93.2MB in the beginning and 91.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:32:38,988 INFO L158 Benchmark]: Boogie Preprocessor took 12.18ms. Allocated memory is still 132.1MB. Free memory was 91.8MB in the beginning and 91.2MB in the end (delta: 625.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,988 INFO L158 Benchmark]: RCFGBuilder took 185.07ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 82.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,988 INFO L158 Benchmark]: BuchiAutomizer took 4516.19ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 82.8MB in the beginning and 70.6MB in the end (delta: 12.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,989 INFO L158 Benchmark]: Witness Printer took 22.57ms. Allocated memory is still 172.0MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:32:38,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 139.03ms. Allocated memory is still 132.1MB. Free memory was 102.1MB in the beginning and 93.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.05ms. Allocated memory is still 132.1MB. Free memory was 93.2MB in the beginning and 91.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.18ms. Allocated memory is still 132.1MB. Free memory was 91.8MB in the beginning and 91.2MB in the end (delta: 625.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 185.07ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 82.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4516.19ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 82.8MB in the beginning and 70.6MB in the end (delta: 12.2MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Witness Printer took 22.57ms. Allocated memory is still 172.0MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 242 IncrementalHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 49 mSDtfsCounter, 242 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq193 hnf92 smp100 dnf138 smp100 tf104 neg95 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 125ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, g(x - 1)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-12-13 18:32:39,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 18:32:39,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 18:32:39,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b517f9b-75f9-449e-9cad-fd6eb4824630/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)