./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:48:33,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:33,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:33,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:33,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:33,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:33,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:33,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:33,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:33,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:33,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:33,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:33,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:33,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:33,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:33,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:33,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:33,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:33,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:33,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:33,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:33,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:33,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:33,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:33,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:33,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:33,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:33,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:33,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:33,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:33,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:33,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:33,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:33,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:33,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:33,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:33,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:33,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:33,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:33,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:33,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:33,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 18:48:33,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:33,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:33,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:33,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:33,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:33,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:33,749 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:33,750 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 18:48:33,750 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 18:48:33,750 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 18:48:33,751 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 18:48:33,751 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 18:48:33,751 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 18:48:33,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:33,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:48:33,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:33,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:33,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 18:48:33,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 18:48:33,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 18:48:33,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:33,754 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 18:48:33,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:33,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 18:48:33,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:33,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:33,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:33,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:33,757 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 18:48:33,757 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_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2022-11-18 18:48:34,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:34,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:34,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:34,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:34,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:34,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2022-11-18 18:48:34,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/data/5bf4a905c/5909076d6618491aa6034cf52390e0cc/FLAG8dc88a5c9 [2022-11-18 18:48:34,688 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:34,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2022-11-18 18:48:34,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/data/5bf4a905c/5909076d6618491aa6034cf52390e0cc/FLAG8dc88a5c9 [2022-11-18 18:48:35,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/data/5bf4a905c/5909076d6618491aa6034cf52390e0cc [2022-11-18 18:48:35,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:35,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:35,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:35,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:35,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:35,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcbd294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35, skipping insertion in model container [2022-11-18 18:48:35,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:35,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:35,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:35,378 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:35,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:35,407 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:35,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35 WrapperNode [2022-11-18 18:48:35,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:35,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:35,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:35,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:35,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,442 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6 [2022-11-18 18:48:35,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:35,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:35,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:35,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:35,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:35,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:35,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:35,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:35,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (1/1) ... [2022-11-18 18:48:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:35,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:35,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:48:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:48:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-11-18 18:48:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-11-18 18:48:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:35,625 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:35,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:35,770 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:35,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:35,776 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:48:35,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:35 BoogieIcfgContainer [2022-11-18 18:48:35,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:35,779 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 18:48:35,779 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 18:48:35,784 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 18:48:35,785 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:35,785 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 06:48:35" (1/3) ... [2022-11-18 18:48:35,786 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13857bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:48:35, skipping insertion in model container [2022-11-18 18:48:35,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:35,787 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:35" (2/3) ... [2022-11-18 18:48:35,787 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13857bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:48:35, skipping insertion in model container [2022-11-18 18:48:35,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:48:35,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:35" (3/3) ... [2022-11-18 18:48:35,789 INFO L332 chiAutomizerObserver]: Analyzing ICFG MutualRecursion_1a.c [2022-11-18 18:48:35,844 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 18:48:35,844 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 18:48:35,844 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 18:48:35,844 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 18:48:35,844 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 18:48:35,845 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 18:48:35,845 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 18:48:35,845 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 18:48:35,849 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) [2022-11-18 18:48:35,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:35,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:35,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:35,878 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 18:48:35,879 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:48:35,879 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 18:48:35,879 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) [2022-11-18 18:48:35,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:35,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:35,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:35,883 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 18:48:35,883 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-18 18:48:35,891 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 12#L26true call main_#t~ret5#1 := g(main_~x~0#1);< 14#gENTRYtrue [2022-11-18 18:48:35,892 INFO L750 eck$LassoCheckResult]: Loop: 14#gENTRYtrue ~x := #in~x; 6#L19true assume !(~x <= 0); 11#L20true call #t~ret2 := f(~x - 1);< 15#fENTRYtrue ~x := #in~x; 18#L13true assume !(~x <= 0); 9#L14true call #t~ret0 := g(~x);< 14#gENTRYtrue [2022-11-18 18:48:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash 47743, now seen corresponding path program 1 times [2022-11-18 18:48:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:35,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571266349] [2022-11-18 18:48:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:35,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:36,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1158065693, now seen corresponding path program 1 times [2022-11-18 18:48:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:36,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82663372] [2022-11-18 18:48:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:36,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:36,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1788538341, now seen corresponding path program 1 times [2022-11-18 18:48:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:36,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978458745] [2022-11-18 18:48:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:36,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:36,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:36,371 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:36,371 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:36,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:36,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:36,372 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:48:36,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:36,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:36,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2022-11-18 18:48:36,373 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:36,373 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:36,401 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,419 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,424 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,428 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,442 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,452 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,459 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,535 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:36,536 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:48:36,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:36,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 18:48:36,588 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:36,588 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#res=0} Honda state: {f_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:36,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:36,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 18:48:36,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:36,639 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret2=0} Honda state: {g_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:36,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:36,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 18:48:36,705 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:36,705 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret3=0} Honda state: {g_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:36,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:36,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 18:48:36,769 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:48:36,769 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:48:36,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 18:48:36,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:48:36,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:36,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:36,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 18:48:36,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:48:36,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:48:36,896 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:48:36,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:36,905 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:48:36,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:48:36,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:48:36,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:48:36,905 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:48:36,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:36,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:48:36,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:48:36,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2022-11-18 18:48:36,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:48:36,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:48:36,908 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,920 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,924 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,938 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,942 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,946 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:36,959 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:48:37,002 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:48:37,007 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:48:37,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,037 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 18:48:37,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,064 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,089 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 18:48:37,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,124 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 18:48:37,137 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,150 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,161 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 18:48:37,216 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 18:48:37,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,279 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 18:48:37,282 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,300 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:48:37,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:48:37,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:48:37,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:48:37,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:48:37,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:48:37,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:48:37,329 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:48:37,329 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:48:37,339 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:48:37,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 18:48:37,343 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 18:48:37,343 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:48:37,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:48:37,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 18:48:37,369 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:48:37,369 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:48:37,370 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:48:37,370 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [] [2022-11-18 18:48:37,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:37,382 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:48:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:37,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:37,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:37,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:48:37,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:37,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-11-18 18:48:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:37,717 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-18 18:48:37,719 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) [2022-11-18 18:48:37,905 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. [2022-11-18 18:48:37,908 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 [2022-11-18 18:48:37,913 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) [2022-11-18 18:48:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2022-11-18 18:48:37,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-18 18:48:37,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:37,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-18 18:48:37,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:37,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 3 letters. Loop has 12 letters. [2022-11-18 18:48:37,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:48:37,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2022-11-18 18:48:37,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:37,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 46 states and 60 transitions. [2022-11-18 18:48:37,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-11-18 18:48:37,935 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-18 18:48:37,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 60 transitions. [2022-11-18 18:48:37,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:37,938 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-18 18:48:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 60 transitions. [2022-11-18 18:48:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-11-18 18:48:37,971 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) [2022-11-18 18:48:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-18 18:48:37,974 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-18 18:48:37,974 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-18 18:48:37,975 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 18:48:37,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 57 transitions. [2022-11-18 18:48:37,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:37,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:37,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:37,978 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:37,978 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:37,979 INFO L748 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 174#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; 188#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 190#gENTRY ~x := #in~x; 195#L19 assume !(~x <= 0); 167#L20 call #t~ret2 := f(~x - 1);< 189#fENTRY ~x := #in~x; 199#L13 assume !(~x <= 0); 180#L14 call #t~ret0 := g(~x);< 185#gENTRY ~x := #in~x; 179#L19 assume ~x <= 0;#res := 0; 181#gFINAL assume true; 186#gEXIT >#27#return; 175#L14-1 [2022-11-18 18:48:37,979 INFO L750 eck$LassoCheckResult]: Loop: 175#L14-1 call #t~ret1 := g(1 + ~x);< 178#gENTRY ~x := #in~x; 203#L19 assume !(~x <= 0); 176#L20 call #t~ret2 := f(~x - 1);< 201#fENTRY ~x := #in~x; 200#L13 assume !(~x <= 0); 184#L14 call #t~ret0 := g(~x);< 178#gENTRY ~x := #in~x; 203#L19 assume ~x <= 0;#res := 0; 198#gFINAL assume true; 202#gEXIT >#27#return; 175#L14-1 [2022-11-18 18:48:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1510789928, now seen corresponding path program 1 times [2022-11-18 18:48:37,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:37,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508172105] [2022-11-18 18:48:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:37,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:48:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:38,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508172105] [2022-11-18 18:48:38,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508172105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:38,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:38,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165459964] [2022-11-18 18:48:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:38,131 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:48:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1553130012, now seen corresponding path program 1 times [2022-11-18 18:48:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:38,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517419442] [2022-11-18 18:48:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 18:48:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517419442] [2022-11-18 18:48:38,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517419442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:38,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:38,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921204695] [2022-11-18 18:48:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:38,274 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:48:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:48:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:38,280 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) [2022-11-18 18:48:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:38,395 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-18 18:48:38,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 60 transitions. [2022-11-18 18:48:38,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:38,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 45 states and 56 transitions. [2022-11-18 18:48:38,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2022-11-18 18:48:38,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-18 18:48:38,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2022-11-18 18:48:38,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:48:38,411 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-18 18:48:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2022-11-18 18:48:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-18 18:48:38,418 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) [2022-11-18 18:48:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-11-18 18:48:38,424 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-18 18:48:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:48:38,426 INFO L428 stractBuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-11-18 18:48:38,426 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 18:48:38,426 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 56 transitions. [2022-11-18 18:48:38,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:48:38,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:48:38,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:48:38,430 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:38,430 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:38,431 INFO L748 eck$LassoCheckResult]: Stem: 296#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 297#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; 299#L26 call main_#t~ret5#1 := g(main_~x~0#1);< 305#gENTRY ~x := #in~x; 306#L19 assume !(~x <= 0); 282#L20 call #t~ret2 := f(~x - 1);< 304#fENTRY ~x := #in~x; 313#L13 assume !(~x <= 0); 293#L14 call #t~ret0 := g(~x);< 302#gENTRY ~x := #in~x; 292#L19 assume !(~x <= 0); 294#L20 call #t~ret2 := f(~x - 1);< 303#fENTRY ~x := #in~x; 322#L13 assume ~x <= 0;#res := 0; 321#fFINAL assume true; 320#fEXIT >#31#return; 279#L20-1 call #t~ret3 := f(~x - 2);< 307#fENTRY ~x := #in~x; 308#L13 assume ~x <= 0;#res := 0; 278#fFINAL assume true; 280#fEXIT >#33#return; 285#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 298#gFINAL assume true; 301#gEXIT >#27#return; 288#L14-1 [2022-11-18 18:48:38,431 INFO L750 eck$LassoCheckResult]: Loop: 288#L14-1 call #t~ret1 := g(1 + ~x);< 291#gENTRY ~x := #in~x; 317#L19 assume !(~x <= 0); 290#L20 call #t~ret2 := f(~x - 1);< 316#fENTRY ~x := #in~x; 314#L13 assume !(~x <= 0); 300#L14 call #t~ret0 := g(~x);< 291#gENTRY ~x := #in~x; 317#L19 assume !(~x <= 0); 290#L20 call #t~ret2 := f(~x - 1);< 316#fENTRY ~x := #in~x; 314#L13 assume ~x <= 0;#res := 0; 315#fFINAL assume true; 319#fEXIT >#31#return; 289#L20-1 call #t~ret3 := f(~x - 2);< 316#fENTRY ~x := #in~x; 314#L13 assume ~x <= 0;#res := 0; 315#fFINAL assume true; 319#fEXIT >#33#return; 285#L20-2 #res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3; 298#gFINAL assume true; 301#gEXIT >#27#return; 288#L14-1 [2022-11-18 18:48:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1263731607, now seen corresponding path program 1 times [2022-11-18 18:48:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:38,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810167500] [2022-11-18 18:48:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1714809691, now seen corresponding path program 1 times [2022-11-18 18:48:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:38,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653755052] [2022-11-18 18:48:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash 790919793, now seen corresponding path program 1 times [2022-11-18 18:48:38,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005639836] [2022-11-18 18:48:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:38,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:38,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:48:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:39,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:48:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:48:39,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 06:48:39 BoogieIcfgContainer [2022-11-18 18:48:39,452 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 18:48:39,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:48:39,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:48:39,453 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:48:39,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:35" (3/4) ... [2022-11-18 18:48:39,456 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 18:48:39,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:48:39,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:48:39,493 INFO L158 Benchmark]: Toolchain (without parser) took 4403.09ms. Allocated memory was 134.2MB in the beginning and 201.3MB in the end (delta: 67.1MB). Free memory was 99.6MB in the beginning and 95.5MB in the end (delta: 4.0MB). Peak memory consumption was 71.6MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,493 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:48:39,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.46ms. Allocated memory is still 134.2MB. Free memory was 99.3MB in the beginning and 109.4MB in the end (delta: -10.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.92ms. Allocated memory is still 134.2MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:48:39,494 INFO L158 Benchmark]: Boogie Preprocessor took 19.13ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 107.3MB in the end (delta: 703.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,495 INFO L158 Benchmark]: RCFGBuilder took 313.78ms. Allocated memory is still 134.2MB. Free memory was 107.3MB in the beginning and 98.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,495 INFO L158 Benchmark]: BuchiAutomizer took 3672.56ms. Allocated memory was 134.2MB in the beginning and 201.3MB in the end (delta: 67.1MB). Free memory was 98.2MB in the beginning and 97.6MB in the end (delta: 553.4kB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,496 INFO L158 Benchmark]: Witness Printer took 39.75ms. Allocated memory is still 201.3MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:48:39,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 79.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.46ms. Allocated memory is still 134.2MB. Free memory was 99.3MB in the beginning and 109.4MB in the end (delta: -10.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.92ms. Allocated memory is still 134.2MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.13ms. Allocated memory is still 134.2MB. Free memory was 108.0MB in the beginning and 107.3MB in the end (delta: 703.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.78ms. Allocated memory is still 134.2MB. Free memory was 107.3MB in the beginning and 98.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3672.56ms. Allocated memory was 134.2MB in the beginning and 201.3MB in the end (delta: 67.1MB). Free memory was 98.2MB in the beginning and 97.6MB in the end (delta: 553.4kB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. * Witness Printer took 39.75ms. Allocated memory is still 201.3MB. Free memory was 97.6MB in the beginning and 95.5MB 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 3.5s and 3 iterations. TraceHistogramMax:3. Analysis of lassos took 2.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 28 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0, x=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, f(x - 1)=0, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0, x=-1] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, f(x - 1)=0, f(x - 2)=0, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, g(x)=0, x=1] 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. - 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) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0, x=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, f(x - 1)=0, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0, x=-1] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, f(x - 1)=0, f(x - 2)=0, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, g(x)=0, x=1] 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! [2022-11-18 18:48:39,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06984e2c-6326-4789-933e-7fda05e7ab72/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)