./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa --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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:38:13,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:38:13,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:38:13,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:38:13,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:38:13,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:38:13,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:38:13,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:38:13,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:38:13,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:38:13,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:38:13,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:38:13,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:38:13,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:38:13,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:38:13,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:38:13,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:38:13,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:38:13,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:38:13,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:38:13,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:38:13,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:38:13,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:38:13,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:38:13,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:38:13,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:38:13,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:38:13,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:38:13,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:38:13,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:38:13,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:38:13,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:38:13,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:38:13,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:38:13,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:38:13,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:38:13,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:38:13,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:38:13,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:38:13,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:38:13,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:38:13,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 19:38:13,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:38:13,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:38:13,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:38:13,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:38:13,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:38:13,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:38:13,359 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:38:13,360 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 19:38:13,360 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 19:38:13,360 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 19:38:13,360 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 19:38:13,360 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 19:38:13,360 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 19:38:13,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 19:38:13,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:38:13,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 19:38:13,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:38:13,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:38:13,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:38:13,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:38:13,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:38:13,363 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 19:38:13,363 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_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2021-12-06 19:38:13,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:38:13,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:38:13,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:38:13,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:38:13,553 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:38:13,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-12-06 19:38:13,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/data/a8ac8456b/a32a6d0bb8c749fb829c1b311306c63c/FLAG0b27e90b0 [2021-12-06 19:38:13,959 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:38:13,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-12-06 19:38:13,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/data/a8ac8456b/a32a6d0bb8c749fb829c1b311306c63c/FLAG0b27e90b0 [2021-12-06 19:38:13,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/data/a8ac8456b/a32a6d0bb8c749fb829c1b311306c63c [2021-12-06 19:38:13,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:38:13,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:38:13,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:38:13,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:38:13,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:38:13,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:38:13" (1/1) ... [2021-12-06 19:38:13,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14795a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:13, skipping insertion in model container [2021-12-06 19:38:13,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:38:13" (1/1) ... [2021-12-06 19:38:13,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:38:13,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:38:14,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:38:14,103 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:38:14,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:38:14,120 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:38:14,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14 WrapperNode [2021-12-06 19:38:14,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:38:14,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:38:14,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:38:14,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:38:14,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,141 INFO L137 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6 [2021-12-06 19:38:14,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:38:14,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:38:14,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:38:14,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:38:14,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:38:14,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:38:14,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:38:14,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:38:14,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (1/1) ... [2021-12-06 19:38:14,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 19:38:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-06 19:38:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-06 19:38:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-12-06 19:38:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-12-06 19:38:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:38:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:38:14,249 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:38:14,251 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:38:14,304 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:38:14,309 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:38:14,310 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:38:14,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:38:14 BoogieIcfgContainer [2021-12-06 19:38:14,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:38:14,312 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 19:38:14,312 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 19:38:14,314 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 19:38:14,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:38:14,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 07:38:13" (1/3) ... [2021-12-06 19:38:14,315 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56c11d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:38:14, skipping insertion in model container [2021-12-06 19:38:14,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:38:14,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:38:14" (2/3) ... [2021-12-06 19:38:14,316 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56c11d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 07:38:14, skipping insertion in model container [2021-12-06 19:38:14,316 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 19:38:14,316 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:38:14" (3/3) ... [2021-12-06 19:38:14,317 INFO L388 chiAutomizerObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-12-06 19:38:14,350 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 19:38:14,350 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 19:38:14,350 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 19:38:14,350 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 19:38:14,350 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 19:38:14,350 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 19:38:14,351 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 19:38:14,351 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 19:38:14,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 19:38:14,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:14,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:38:14,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:38:14,384 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 19:38:14,384 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:38:14,384 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 19:38:14,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 19:38:14,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:14,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:38:14,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:38:14,388 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 19:38:14,388 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:38:14,393 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 13#L26true call main_#t~ret5#1 := g(main_~x~0#1);< 15#gENTRYtrue [2021-12-06 19:38:14,393 INFO L793 eck$LassoCheckResult]: Loop: 15#gENTRYtrue ~x := #in~x; 7#L19true assume !(~x <= 0); 12#L20true call #t~ret2 := f(~x - 1);< 16#fENTRYtrue ~x := #in~x; 19#L13true assume !(~x <= 0); 10#L14true call #t~ret0 := g(~x);< 15#gENTRYtrue [2021-12-06 19:38:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 47743, now seen corresponding path program 1 times [2021-12-06 19:38:14,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981144331] [2021-12-06 19:38:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:14,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,458 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1158065693, now seen corresponding path program 1 times [2021-12-06 19:38:14,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:14,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235539506] [2021-12-06 19:38:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:14,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,487 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1788538341, now seen corresponding path program 1 times [2021-12-06 19:38:14,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:14,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884924323] [2021-12-06 19:38:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:14,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,501 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:14,507 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:14,628 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:38:14,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:38:14,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:38:14,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:38:14,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 19:38:14,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:38:14,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:38:14,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2021-12-06 19:38:14,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:38:14,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:38:14,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,704 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:38:14,705 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 19:38:14,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 19:38:14,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:38:14,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:38:14,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#res=0} Honda state: {f_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:38:14,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:38:14,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 19:38:14,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:38:14,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,778 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:38:14,778 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret2=0} Honda state: {g_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:38:14,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 19:38:14,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 19:38:14,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:38:14,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:38:14,822 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret3=0} Honda state: {g_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:38:14,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-06 19:38:14,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 19:38:14,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:38:14,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 19:38:14,852 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 19:38:14,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 19:38:14,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 19:38:14,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 19:38:14,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 19:38:14,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:14,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:14,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 19:38:14,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 19:38:14,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 19:38:14,985 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 19:38:14,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-06 19:38:14,988 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 19:38:14,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 19:38:14,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 19:38:14,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 19:38:14,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 19:38:14,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:14,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 19:38:14,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 19:38:14,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2021-12-06 19:38:14,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 19:38:14,989 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 19:38:14,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:14,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:15,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:15,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:15,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 19:38:15,034 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 19:38:15,037 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 19:38:15,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,039 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 19:38:15,041 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 [2021-12-06 19:38:15,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,051 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 19:38:15,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 19:38:15,075 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 [2021-12-06 19:38:15,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 19:38:15,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,104 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 19:38:15,105 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 [2021-12-06 19:38:15,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 19:38:15,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 19:38:15,135 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 [2021-12-06 19:38:15,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,145 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 19:38:15,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 19:38:15,167 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 [2021-12-06 19:38:15,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,177 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 19:38:15,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 19:38:15,197 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 [2021-12-06 19:38:15,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,206 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 19:38:15,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 19:38:15,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,225 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 19:38:15,228 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 [2021-12-06 19:38:15,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 19:38:15,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 19:38:15,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 19:38:15,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 19:38:15,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 19:38:15,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 19:38:15,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 19:38:15,238 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 19:38:15,242 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 19:38:15,242 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 19:38:15,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 19:38:15,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:38:15,247 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 19:38:15,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 19:38:15,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 19:38:15,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 19:38:15,306 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 19:38:15,307 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [] [2021-12-06 19:38:15,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-06 19:38:15,355 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 19:38:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:38:15,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:38:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:38:15,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:38:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:38:15,483 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 19:38:15,484 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:38:15,586 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 82 transitions. Complement of second has 24 states. [2021-12-06 19:38:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-12-06 19:38:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:38:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2021-12-06 19:38:15,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-06 19:38:15,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:38:15,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-06 19:38:15,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:38:15,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 12 letters. [2021-12-06 19:38:15,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 19:38:15,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2021-12-06 19:38:15,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:15,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 46 states and 60 transitions. [2021-12-06 19:38:15,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-06 19:38:15,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-12-06 19:38:15,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 60 transitions. [2021-12-06 19:38:15,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:38:15,617 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 60 transitions. [2021-12-06 19:38:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 60 transitions. [2021-12-06 19:38:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-12-06 19:38:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2021-12-06 19:38:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2021-12-06 19:38:15,641 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-12-06 19:38:15,642 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-12-06 19:38:15,642 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 19:38:15,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 57 transitions. [2021-12-06 19:38:15,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:15,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:38:15,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:38:15,645 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:38:15,645 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:38:15,646 INFO L791 eck$LassoCheckResult]: Stem: 174#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 175#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 185#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 191#gENTRY ~x := #in~x; 184#L19 assume !(~x <= 0); 168#L20 call #t~ret2 := f(~x - 1);< 190#fENTRY ~x := #in~x; 200#L13 assume !(~x <= 0); 181#L14 call #t~ret0 := g(~x);< 188#gENTRY ~x := #in~x; 180#L19 assume ~x <= 0;#res := 0; 182#gFINAL assume true; 186#gEXIT >#27#return; 176#L14-1 [2021-12-06 19:38:15,646 INFO L793 eck$LassoCheckResult]: Loop: 176#L14-1 call #t~ret1 := g(1 + ~x);< 179#gENTRY ~x := #in~x; 204#L19 assume !(~x <= 0); 177#L20 call #t~ret2 := f(~x - 1);< 203#fENTRY ~x := #in~x; 201#L13 assume !(~x <= 0); 187#L14 call #t~ret0 := g(~x);< 179#gENTRY ~x := #in~x; 204#L19 assume ~x <= 0;#res := 0; 199#gFINAL assume true; 202#gEXIT >#27#return; 176#L14-1 [2021-12-06 19:38:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1510789928, now seen corresponding path program 1 times [2021-12-06 19:38:15,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:15,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116349029] [2021-12-06 19:38:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:15,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:38:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:38:15,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:38:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116349029] [2021-12-06 19:38:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116349029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:38:15,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:38:15,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:38:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681043230] [2021-12-06 19:38:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:38:15,707 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 19:38:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1553130012, now seen corresponding path program 1 times [2021-12-06 19:38:15,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:15,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833911160] [2021-12-06 19:38:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:15,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:38:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:38:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:38:15,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:38:15,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833911160] [2021-12-06 19:38:15,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833911160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:38:15,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:38:15,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:38:15,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206037426] [2021-12-06 19:38:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:38:15,745 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 19:38:15,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:38:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:38:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:38:15,749 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. cyclomatic complexity: 14 Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:38:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:38:15,788 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-12-06 19:38:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:38:15,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 60 transitions. [2021-12-06 19:38:15,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:15,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 45 states and 56 transitions. [2021-12-06 19:38:15,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-12-06 19:38:15,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-12-06 19:38:15,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2021-12-06 19:38:15,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 19:38:15,794 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-12-06 19:38:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2021-12-06 19:38:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-06 19:38:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 19:38:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-12-06 19:38:15,799 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-12-06 19:38:15,799 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-12-06 19:38:15,799 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 19:38:15,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 56 transitions. [2021-12-06 19:38:15,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-06 19:38:15,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 19:38:15,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 19:38:15,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:38:15,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:38:15,802 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 296#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 305#gENTRY ~x := #in~x; 295#L19 assume !(~x <= 0); 284#L20 call #t~ret2 := f(~x - 1);< 304#fENTRY ~x := #in~x; 314#L13 assume !(~x <= 0); 294#L14 call #t~ret0 := g(~x);< 302#gENTRY ~x := #in~x; 293#L19 assume !(~x <= 0); 280#L20 call #t~ret2 := f(~x - 1);< 303#fENTRY ~x := #in~x; 306#L13 assume ~x <= 0;#res := 0; 279#fFINAL assume true; 281#fEXIT >#31#return; 286#L20-1 call #t~ret3 := f(~x - 2);< 312#fENTRY ~x := #in~x; 323#L13 assume ~x <= 0;#res := 0; 322#fFINAL assume true; 321#fEXIT >#33#return; 313#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 299#gFINAL assume true; 301#gEXIT >#27#return; 289#L14-1 [2021-12-06 19:38:15,802 INFO L793 eck$LassoCheckResult]: Loop: 289#L14-1 call #t~ret1 := g(1 + ~x);< 292#gENTRY ~x := #in~x; 320#L19 assume !(~x <= 0); 291#L20 call #t~ret2 := f(~x - 1);< 317#fENTRY ~x := #in~x; 315#L13 assume !(~x <= 0); 300#L14 call #t~ret0 := g(~x);< 292#gENTRY ~x := #in~x; 320#L19 assume !(~x <= 0); 291#L20 call #t~ret2 := f(~x - 1);< 317#fENTRY ~x := #in~x; 315#L13 assume ~x <= 0;#res := 0; 316#fFINAL assume true; 319#fEXIT >#31#return; 290#L20-1 call #t~ret3 := f(~x - 2);< 317#fENTRY ~x := #in~x; 315#L13 assume ~x <= 0;#res := 0; 316#fFINAL assume true; 319#fEXIT >#33#return; 313#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 299#gFINAL assume true; 301#gEXIT >#27#return; 289#L14-1 [2021-12-06 19:38:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1263731607, now seen corresponding path program 1 times [2021-12-06 19:38:15,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:15,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671733330] [2021-12-06 19:38:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:15,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:15,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 19:38:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,815 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1714809691, now seen corresponding path program 1 times [2021-12-06 19:38:15,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:15,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107092722] [2021-12-06 19:38:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:15,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,843 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,852 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:38:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 790919793, now seen corresponding path program 1 times [2021-12-06 19:38:15,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:38:15,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086820724] [2021-12-06 19:38:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:38:15,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:38:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,866 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:38:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:38:15,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:38:16,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 07:38:16 BoogieIcfgContainer [2021-12-06 19:38:16,296 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 19:38:16,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:38:16,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:38:16,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:38:16,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:38:14" (3/4) ... [2021-12-06 19:38:16,299 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-06 19:38:16,328 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:38:16,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:38:16,329 INFO L158 Benchmark]: Toolchain (without parser) took 2351.08ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 63.9MB in the beginning and 60.3MB in the end (delta: 3.6MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,330 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory was 80.3MB in the beginning and 80.2MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:38:16,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.76ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 79.8MB in the end (delta: -16.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.99ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 78.5MB in the end (delta: 875.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:38:16,331 INFO L158 Benchmark]: Boogie Preprocessor took 10.23ms. Allocated memory is still 102.8MB. Free memory was 78.2MB in the beginning and 77.2MB in the end (delta: 924.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,332 INFO L158 Benchmark]: RCFGBuilder took 158.04ms. Allocated memory is still 102.8MB. Free memory was 77.2MB in the beginning and 68.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,332 INFO L158 Benchmark]: BuchiAutomizer took 1984.29ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 68.9MB in the beginning and 62.4MB in the end (delta: 6.5MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,333 INFO L158 Benchmark]: Witness Printer took 32.35ms. Allocated memory is still 132.1MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:38:16,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory was 80.3MB in the beginning and 80.2MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.76ms. Allocated memory is still 102.8MB. Free memory was 63.7MB in the beginning and 79.8MB in the end (delta: -16.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.99ms. Allocated memory is still 102.8MB. Free memory was 79.4MB in the beginning and 78.5MB in the end (delta: 875.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.23ms. Allocated memory is still 102.8MB. Free memory was 78.2MB in the beginning and 77.2MB in the end (delta: 924.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 158.04ms. Allocated memory is still 102.8MB. Free memory was 77.2MB in the beginning and 68.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1984.29ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 68.9MB in the beginning and 62.4MB in the end (delta: 6.5MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * Witness Printer took 32.35ms. Allocated memory is still 132.1MB. Free memory was 62.4MB in the beginning and 60.3MB in the end (delta: 2.1MB). 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 45 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 3 iterations. TraceHistogramMax:3. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 45 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 28 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f527d3c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39ba2c03=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449062d2=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ab3594b=0, \result=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@156dd4fd=0, \old(x)=1, x=1, x=0, \result=0, \old(x)=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@501d4461=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) Loop: [L14] CALL g(x + 1) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:38:16,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae6a7e9-b9e9-42a3-9549-5ef9b4b6f040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)