./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:37,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:37,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 10:44:37,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:37,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:37,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:37,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:37,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:37,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:37,990 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:37,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:37,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:37,993 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:37,995 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:44:37,996 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:44:37,996 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:44:37,996 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:44:37,998 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:44:37,998 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:44:37,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:37,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:44:38,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:38,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:38,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:44:38,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:44:38,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:44:38,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:44:38,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:38,003 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:44:38,004 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:38,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:38,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:38,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:38,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:38,007 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:44:38,007 INFO L153 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_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2023-11-26 10:44:38,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:38,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:38,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:38,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:38,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:38,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2023-11-26 10:44:41,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:41,705 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:41,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2023-11-26 10:44:41,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/data/30ee5c2fd/fb51ea2632e2488db4ba08c1423eb17f/FLAGc3197ef36 [2023-11-26 10:44:41,741 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/data/30ee5c2fd/fb51ea2632e2488db4ba08c1423eb17f [2023-11-26 10:44:41,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:41,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:41,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:41,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:41,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:41,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9e0158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41, skipping insertion in model container [2023-11-26 10:44:41,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:41,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:41,913 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:41,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:41,941 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:41,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41 WrapperNode [2023-11-26 10:44:41,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:41,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:41,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:41,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:41,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,975 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2023-11-26 10:44:41,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:41,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:41,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:41,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:41,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,997 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 10:44:41,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:41,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:42,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:42,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:42,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:42,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:42,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:42,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:42,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:42,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (1/1) ... [2023-11-26 10:44:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:42,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:42,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-11-26 10:44:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-11-26 10:44:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:42,158 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:42,162 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:42,254 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:42,264 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:42,264 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:44:42,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:42 BoogieIcfgContainer [2023-11-26 10:44:42,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:42,268 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:44:42,268 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:44:42,287 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:44:42,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:44:42,288 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:44:41" (1/3) ... [2023-11-26 10:44:42,289 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55844eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:44:42, skipping insertion in model container [2023-11-26 10:44:42,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:44:42,290 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:41" (2/3) ... [2023-11-26 10:44:42,290 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55844eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:44:42, skipping insertion in model container [2023-11-26 10:44:42,290 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:44:42,290 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:42" (3/3) ... [2023-11-26 10:44:42,292 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2023-11-26 10:44:42,366 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:44:42,366 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:44:42,366 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:44:42,366 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:44:42,366 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:44:42,367 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:44:42,367 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:44:42,367 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:44:42,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:44:42,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:44:42,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:44:42,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:44:42,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 10:44:42,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 10:44:42,398 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:44:42,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:44:42,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:44:42,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:44:42,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:44:42,401 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 10:44:42,402 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 10:44:42,409 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L20true assume !(main_~x~0#1 < 0); 9#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 12#$Ultimate##0true [2023-11-26 10:44:42,410 INFO L750 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 6#L12true assume !(0 == ~x); 4#L15true call #t~ret0 := g(~x - 1);< 12#$Ultimate##0true [2023-11-26 10:44:42,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:42,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2023-11-26 10:44:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211710891] [2023-11-26 10:44:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2023-11-26 10:44:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33386561] [2023-11-26 10:44:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:42,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2023-11-26 10:44:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473328850] [2023-11-26 10:44:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:42,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:42,770 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:42,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:42,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:42,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:42,771 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:44:42,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:42,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:42,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2023-11-26 10:44:42,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:42,772 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:42,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:42,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:42,801 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:42,804 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:42,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:42,880 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:42,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:44:42,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:42,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:42,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 10:44:42,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:42,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:42,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:42,909 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:42,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:42,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:42,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:42,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 10:44:42,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:42,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:42,942 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:42,942 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:42,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:42,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 10:44:42,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:42,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:42,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:42,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:42,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:42,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:42,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 10:44:43,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,035 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 10:44:43,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 10:44:43,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:44:43,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-1} Honda state: {g_#in~x=-1} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [7, 9, 1] Nus: [1, 0] [2023-11-26 10:44:43,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,169 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:43,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:43,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:43,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:43,171 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:44:43,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:43,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:43,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2023-11-26 10:44:43,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:43,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:43,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,210 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,231 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,236 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:43,337 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:44:43,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 10:44:43,380 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,380 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 10:44:43,438 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,438 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 10:44:43,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,468 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,480 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 10:44:43,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,497 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,512 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 10:44:43,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:43,543 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:43,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,554 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 10:44:43,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:43,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,598 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:44:43,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:43,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 10:44:43,650 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:44:43,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,662 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:43,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:43,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:43,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:43,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:44:43,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:43,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:43,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2023-11-26 10:44:43,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:43,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:43,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:43,751 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:43,755 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:44:43,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 10:44:43,765 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 [2023-11-26 10:44:43,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:43,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 10:44:43,812 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 [2023-11-26 10:44:43,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:43,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,859 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 [2023-11-26 10:44:43,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 10:44:43,883 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:43,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,891 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,903 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 [2023-11-26 10:44:43,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 10:44:43,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:43,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,922 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 10:44:43,925 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 [2023-11-26 10:44:43,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:43,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:43,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:43,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:43,968 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:43,980 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 [2023-11-26 10:44:43,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:43,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:43,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:43,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:43,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:43,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:43,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:43,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 10:44:44,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:44,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:44,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:44,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,016 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:44,027 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 [2023-11-26 10:44:44,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 10:44:44,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:44,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:44,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:44,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:44,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:44,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:44,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:44,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:44,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,052 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:44,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 10:44:44,055 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 [2023-11-26 10:44:44,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:44,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:44,065 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-26 10:44:44,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:44,080 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-11-26 10:44:44,081 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-11-26 10:44:44,105 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:44:44,147 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2023-11-26 10:44:44,147 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2023-11-26 10:44:44,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:44,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:44,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:44:44,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 10:44:44,229 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-11-26 10:44:44,229 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:44:44,230 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2023-11-26 10:44:44,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-26 10:44:44,238 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-11-26 10:44:44,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:44,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:44:44,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:44,441 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 10:44:44,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:44,615 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 43 transitions. Complement of second has 13 states. [2023-11-26 10:44:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 10:44:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-11-26 10:44:44,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-26 10:44:44,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:44,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-26 10:44:44,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:44,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-26 10:44:44,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:44,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2023-11-26 10:44:44,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:44:44,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2023-11-26 10:44:44,638 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-26 10:44:44,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-26 10:44:44,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2023-11-26 10:44:44,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:44:44,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-26 10:44:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2023-11-26 10:44:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-11-26 10:44:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:44:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-11-26 10:44:44,672 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-26 10:44:44,672 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-11-26 10:44:44,672 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:44:44,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2023-11-26 10:44:44,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:44:44,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:44:44,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:44:44,675 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,675 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,675 INFO L748 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 129#L20 assume !(main_~x~0#1 < 0); 124#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 126#$Ultimate##0 ~x := #in~x; 130#L12 assume !(0 == ~x); 119#L15 call #t~ret0 := g(~x - 1);< 125#$Ultimate##0 ~x := #in~x; 131#L12 assume 0 == ~x;#res := 1; 118#gFINAL assume true; 120#gEXIT >#23#return; 122#L15-1 [2023-11-26 10:44:44,676 INFO L750 eck$LassoCheckResult]: Loop: 122#L15-1 call #t~ret1 := g(1 + #t~ret0);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume !(0 == ~x); 121#L15 call #t~ret0 := g(~x - 1);< 123#$Ultimate##0 ~x := #in~x; 134#L12 assume 0 == ~x;#res := 1; 133#gFINAL assume true; 135#gEXIT >#23#return; 122#L15-1 [2023-11-26 10:44:44,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2023-11-26 10:44:44,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174345361] [2023-11-26 10:44:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:44,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:44,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2023-11-26 10:44:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494997558] [2023-11-26 10:44:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:44,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:44,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2023-11-26 10:44:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255742926] [2023-11-26 10:44:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:44:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:44,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:44,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255742926] [2023-11-26 10:44:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255742926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:44,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459462981] [2023-11-26 10:44:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:44,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:44,999 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 10:44:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:44:45,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:45,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:44:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459462981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:45,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-11-26 10:44:45,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682897883] [2023-11-26 10:44:45,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:45,388 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:45,389 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:45,389 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:45,389 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:45,389 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:44:45,389 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:45,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:45,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2023-11-26 10:44:45,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:45,391 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:45,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,413 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,468 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:45,470 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:44:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,471 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:45,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:45,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-26 10:44:45,506 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:45,506 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=1} Honda state: {g_#in~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:45,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,517 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:45,522 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:45,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 10:44:45,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:45,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:45,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,554 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:45,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:45,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 10:44:45,594 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:45,595 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=1} Honda state: {g_~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:45,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,606 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:45,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:45,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-26 10:44:45,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,652 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:44:45,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:45,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 10:44:45,690 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:44:45,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,696 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:45,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:45,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:45,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:45,696 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:44:45,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:45,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:45,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2023-11-26 10:44:45,696 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:45,696 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:45,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,710 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,718 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:45,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:45,771 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:44:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,773 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,778 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 [2023-11-26 10:44:45,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:45,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:45,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:45,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:45,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:45,792 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:45,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:45,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-26 10:44:45,806 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:45,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,815 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,819 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 [2023-11-26 10:44:45,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:45,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:45,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:45,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:45,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:45,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:45,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:45,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-26 10:44:45,854 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:45,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,864 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,868 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 [2023-11-26 10:44:45,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-26 10:44:45,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:45,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:45,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:45,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:45,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:45,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:45,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:45,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:44:45,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,916 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,919 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 [2023-11-26 10:44:45,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:44:45,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:44:45,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:44:45,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:44:45,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:44:45,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:44:45,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:44:45,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-26 10:44:45,953 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:44:45,955 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:44:45,955 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:44:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:45,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,957 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-26 10:44:45,959 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:44:45,959 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:44:45,959 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:44:45,959 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2023-11-26 10:44:45,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,968 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:44:45,973 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:45,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:46,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:44:46,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:46,271 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-26 10:44:46,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:46,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:46,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 83 states and 121 transitions. Complement of second has 31 states. [2023-11-26 10:44:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-26 10:44:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2023-11-26 10:44:46,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 10:44:46,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:46,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2023-11-26 10:44:46,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:46,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2023-11-26 10:44:46,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:44:46,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2023-11-26 10:44:46,624 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-26 10:44:46,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2023-11-26 10:44:46,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-26 10:44:46,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-26 10:44:46,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2023-11-26 10:44:46,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:44:46,636 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2023-11-26 10:44:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2023-11-26 10:44:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2023-11-26 10:44:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-26 10:44:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2023-11-26 10:44:46,659 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2023-11-26 10:44:46,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:44:46,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:46,664 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:44:46,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:46,769 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-11-26 10:44:46,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2023-11-26 10:44:46,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:44:46,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2023-11-26 10:44:46,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-11-26 10:44:46,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2023-11-26 10:44:46,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2023-11-26 10:44:46,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:44:46,777 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-11-26 10:44:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2023-11-26 10:44:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2023-11-26 10:44:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-26 10:44:46,782 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-26 10:44:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:46,784 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-26 10:44:46,784 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 10:44:46,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2023-11-26 10:44:46,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:44:46,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:44:46,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:44:46,788 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:46,788 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 10:44:46,789 INFO L748 eck$LassoCheckResult]: Stem: 578#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 579#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 580#L20 assume !(main_~x~0#1 < 0); 572#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 577#$Ultimate##0 ~x := #in~x; 583#L12 assume !(0 == ~x); 566#L15 call #t~ret0 := g(~x - 1);< 571#$Ultimate##0 ~x := #in~x; 584#L12 assume 0 == ~x;#res := 1; 565#gFINAL assume true; 567#gEXIT >#23#return; 569#L15-1 call #t~ret1 := g(1 + #t~ret0);< 581#$Ultimate##0 ~x := #in~x; 582#L12 assume !(0 == ~x); 568#L15 call #t~ret0 := g(~x - 1);< 570#$Ultimate##0 ~x := #in~x; 585#L12 assume !(0 == ~x); 574#L15 [2023-11-26 10:44:46,789 INFO L750 eck$LassoCheckResult]: Loop: 574#L15 call #t~ret0 := g(~x - 1);< 588#$Ultimate##0 ~x := #in~x; 586#L12 assume !(0 == ~x); 574#L15 [2023-11-26 10:44:46,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2023-11-26 10:44:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547938228] [2023-11-26 10:44:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:46,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:46,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2023-11-26 10:44:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080074739] [2023-11-26 10:44:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:46,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:46,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:46,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2023-11-26 10:44:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:46,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110323638] [2023-11-26 10:44:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:46,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:44:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:47,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110323638] [2023-11-26 10:44:47,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110323638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877265514] [2023-11-26 10:44:47,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:44:47,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:47,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,014 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-26 10:44:47,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-26 10:44:47,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:47,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:44:47,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:47,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877265514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:47,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:47,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-11-26 10:44:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632148545] [2023-11-26 10:44:47,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:47,189 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:44:47,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:44:47,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:44:47,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:44:47,189 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:44:47,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:44:47,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:44:47,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2023-11-26 10:44:47,190 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:44:47,190 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:44:47,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:47,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:47,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:47,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:44:47,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:44:47,264 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:44:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,266 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:47,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:47,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-26 10:44:47,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:47,306 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:47,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,316 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:47,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:47,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-26 10:44:47,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:47,350 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:47,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,360 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:47,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:47,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-26 10:44:47,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,406 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:44:47,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:47,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-26 10:44:47,676 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:47,676 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-6, g_~x=-2} Honda state: {g_#in~x=-6, g_~x=-2} Generalized eigenvectors: [{g_#in~x=3, g_~x=-1}, {g_#in~x=-4, g_~x=0}, {g_#in~x=4, g_~x=0}] Lambdas: [1, 1, 0] Nus: [1, 1] [2023-11-26 10:44:47,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:44:47,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,684 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:44:47,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:44:47,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-26 10:44:47,722 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:44:47,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:44:47,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:44:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:47,732 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:44:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:47,856 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-11-26 10:44:47,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2023-11-26 10:44:47,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:44:47,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2023-11-26 10:44:47,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2023-11-26 10:44:47,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-26 10:44:47,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2023-11-26 10:44:47,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:44:47,859 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-11-26 10:44:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2023-11-26 10:44:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-11-26 10:44:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-26 10:44:47,862 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-26 10:44:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:44:47,863 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-26 10:44:47,863 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 10:44:47,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2023-11-26 10:44:47,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-26 10:44:47,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:44:47,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:44:47,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:47,865 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-26 10:44:47,865 INFO L748 eck$LassoCheckResult]: Stem: 775#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 776#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 777#L20 assume !(main_~x~0#1 < 0); 771#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 774#$Ultimate##0 ~x := #in~x; 779#L12 assume !(0 == ~x); 770#L15 call #t~ret0 := g(~x - 1);< 772#$Ultimate##0 ~x := #in~x; 780#L12 assume 0 == ~x;#res := 1; 784#gFINAL assume true; 773#gEXIT >#23#return; 768#L15-1 [2023-11-26 10:44:47,865 INFO L750 eck$LassoCheckResult]: Loop: 768#L15-1 call #t~ret1 := g(1 + #t~ret0);< 782#$Ultimate##0 ~x := #in~x; 781#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 769#$Ultimate##0 ~x := #in~x; 778#L12 assume !(0 == ~x); 765#L15 call #t~ret0 := g(~x - 1);< 783#$Ultimate##0 ~x := #in~x; 785#L12 assume 0 == ~x;#res := 1; 764#gFINAL assume true; 766#gEXIT >#23#return; 768#L15-1 [2023-11-26 10:44:47,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2023-11-26 10:44:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500918578] [2023-11-26 10:44:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:47,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2023-11-26 10:44:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705725294] [2023-11-26 10:44:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:47,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2023-11-26 10:44:47,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217560174] [2023-11-26 10:44:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:47,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:44:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:48,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:44:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:44:48,250 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:48,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:48,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:44:48 BoogieIcfgContainer [2023-11-26 10:44:48,261 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:44:48,261 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:48,262 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:48,262 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:48,262 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:42" (3/4) ... [2023-11-26 10:44:48,264 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 10:44:48,266 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:48,315 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:44:48,315 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:44:48,316 INFO L158 Benchmark]: Toolchain (without parser) took 6566.73ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 82.2MB in the beginning and 58.3MB in the end (delta: 23.9MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,316 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 92.3MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:48,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.03ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 72.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.26ms. Allocated memory is still 127.9MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,317 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 70.4MB in the end (delta: 944.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:48,318 INFO L158 Benchmark]: RCFGBuilder took 259.21ms. Allocated memory is still 127.9MB. Free memory was 70.1MB in the beginning and 61.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,318 INFO L158 Benchmark]: BuchiAutomizer took 5993.42ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 61.7MB in the beginning and 60.4MB in the end (delta: 1.3MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,319 INFO L158 Benchmark]: Witness Printer took 54.03ms. Allocated memory is still 167.8MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:48,321 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 92.3MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.03ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 72.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.26ms. Allocated memory is still 127.9MB. Free memory was 72.9MB in the beginning and 71.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 127.9MB. Free memory was 71.3MB in the beginning and 70.4MB in the end (delta: 944.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.21ms. Allocated memory is still 127.9MB. Free memory was 70.1MB in the beginning and 61.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5993.42ms. Allocated memory was 127.9MB in the beginning and 167.8MB in the end (delta: 39.8MB). Free memory was 61.7MB in the beginning and 60.4MB in the end (delta: 1.3MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Witness Printer took 54.03ms. Allocated memory is still 167.8MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function null and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 4.4s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 50 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf92 smp100 dnf133 smp100 tf106 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 178ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. [2023-11-26 10:44:48,331 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:48,336 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution [2023-11-26 10:44:48,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated [2023-11-26 10:44:48,349 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret0 could not be translated Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1, x=0] [L15] RET g(x - 1) VAL [\old(x)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 10:44:48,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-26 10:44:48,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-26 10:44:48,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_805edd18-45ab-41c8-9ad9-b4564d30276d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)